About UsROACH2 is one of the major missions at KSat, a student group for space projects, with an active team of about 10 students.KSat e.V. (Small Satellite Student Society at the University of Stuttgart) situated in Germany, is a non-profit organization founded in the spring of 2014. The more than 70 members are students of all semesters, most of which are enrolled in Aerospace Engineering.Our goal is to give members the opportunity to realize their own spaceflight projects during their time at university. Furthermore, we aim to pass on the knowledge and enthusiasm for space travel as part of our public relations work and to provide a communication platform between students, interested industry partners, research institutions and the public.Our ProjectROACH2 is our second attempt to build a rover that can drive on surfaces in weightlessness using electroadhesion. With this experiment we want to show that this technology is suitable for the demanding environment of weightlessness and vacuum. Our experiment consists of two components that are built into a sounding rocket. The first component is our autonomous rover with electroadhesive surfaces. The second component is an obstacle course, the inside of the rocket module, which our rover will have to navigate during two minutes of weighlessness. Of course, there are also some sensors and cameras installed, so that the experiment can be better evaluated afterwards. The experiment is part of the REXUS/BEXUS programme, an international student programme in cooperation between the German Aerospace Center (DLR) and the Swedish National Space Administration (SNSA). It is designed as a competition and offers students the opportunity to conduct their own ideas as technical experiments under conditions similar to those in space. The launch, on a sounding rocket up to an altitude of 100km, is currently planned for February 2021.How PCBWay Can Help UsAt the heart of the mission are the electroadhesive pads that generate the attaching force to the surface. They work a lot like one side of a capacitor with the floor as the other side. When a high voltage is applied, a force is generated pulling these two surfaces towards each other. Without this force, our rover would no longer stick to the obstacle course and start simply start floating away. While the principle is simple, these paper-thin layers of copper and insulating dielectric pose some real design and construction challenges. Especially the very high voltages, that threaten to cause arcing, require clean geometry with no sharp edges and no manufacturing defects. When we attempted to fabricate these parts ourselves, we did not succeed to produce them with enough consistency. It is simply outside of our capabilites to make in-house.This is why we decided to try alternative methods to produce them. This is where PCBWay plays an important role in making our project a reality.The flex PCB PCBWay offers has the capability of making high detail circuit structures on thin insulators, exactly fulfilling our requirements. The advanced processes that professional PCB manufacturers can offer will allow us to explore new design possibilites and have the advantage of superiour reliability. PCBWay especially has excellent prices and delivery times, that support our need of fast iterations and a larger number of PCBs.

Add-on board for Raspberry Pi. PWM Fan controlled by CPU Temperature, WS2812b led and Smart Power/Reboot switch.FLUSHHH is the all-in-one solution for the Raspberry Pi family.PWM regulated fan based on CPU temperatureMany cases for Raspberry Pi comes with fan in order to help cooling the CPU. But these fans are always on, and usually pretty noisy. FLUSHHH regulate the fan speed based on CPU temperature using little python script.WS2812B RGB LEDVery cool multi coloured light. Useful for adding visual signals or show some fancy styles visualization. Connected to Raspberry Pi GPIO pin 12 (BCM18 PWM0) and controlled by a little python script fully customizable.Smart Power On/Off and Reboot switch for Raspberry PiIts main feature is to control the power supply of the Raspberry Pi, providing a switch for Power On / Off and Reboot operations. An ATTINY85 programmed in ARDUINO manages vitality signals with Raspberry Pi.Just plug your micro-USB power supply into the micro-B connector of FLUSHHH, press the switch to power on the Raspberry Pi. Once started:pressure < 3 secs, rebootpressure > 3 secs, shutdownIn addiction, once installed the python script, FLUSHHH is able to check if a restart or shutdown has been commanded from Raspberry Pi and operates accordingly.BOARD INFOLet’s look at PIFLUSHHH closely:FLUSHHH connects to the Raspberry Pi GPIO HEADER:The board is powered via the USB connector. The GPIO pins supply power to the Raspberry Pi and handle the vitality signals.HOW IT WORKSAs soon as the power supply is connected, FLUSHHH waits for the switch to be pressed to power the Raspberry Pi.Once the switch is activated, the power to the Raspberry Pi begins. During this phase, FLUSHHH waits for the Raspberry Pi vitality signal via GPIO Pins. If after a timeout period there is no vitality, FLUSHHH turns off the power to the Raspberry Pi. For vitality signals, Raspberry Pi execute the script switch.py at boot.As soon as the vitality signal is received, the Raspberry Pi is correctly powered and normal operations can be carried out.In this phase the switch has 2 functions:pressure < 3 secs, rebootpressure > 3 secs, shutdownIn addition, through the vitality signal, FLUSHHH is able to understand if a restart or shutdown has been commanded by the Raspberry Pi and operates accordingly.In normal operation, Raspberry Pi execute the other 2 scripts:flushhh.py: for automated fan controlled by CPU temperatureled.py: for RGB led. The default script simply loop all colors with fade effect.INSTALLOpen a terminal on your RPi:cd /home/pi curl https://raw.githubusercontent.com/thinkedinthesea/FLUSHHH/main/install.sh > install.sh sudo bash install.sh These install all the libs and scripts needed.ABOUT MEIn the last 5 years or so i have started to design my own board for Arduino, Raspberry Pi and so on.The idea is to produce simple board that add feature to Raspberry Pi.I use Kicad for the PCB, and support from PCBWAY would be an enormous advantage to me.Having the ability to quiclky prototype boards make the testing and feedback process more efficient and simple, with effectively cost reductions.FLUSHHH will be presented in the online edition of MAKER FAIRE ROME 2020, link to board info.https://makerfairerome.eu/en/exhibitors/?edition=2020&exhibit=200074

Hello Friends, In this video How to make Alexa Divice using Arduino Uno, Voice control home lights.It is very easy to make.We’ve controlled lights with touch, we’ve controlled them with a Smartphone. How about controlling them with voice?Presenting to you the voice-activated light bulb! This project is a smaller version of the bigger home lighting automation projects that is ideal for beginners who wish to make IOT projects and educators who wish to introduce IOT and home automation to their students.To make this project, we’re going to use the evive IOT kit and code it using PictoBlox - a graphical programming software based on Scratch with advanced capabilities. You can download it from HERE.Ready to automate light control? Ready. Set. Go!Subscribe: https://www.youtube.com/channel/UC88UigBH18Zn1UrtWgp2DPALink my page on Facebook https://www.facebook.com/Bihari-Lifehacker-108437444279042/Instagram: https://www.instagram.com/G-mail: rameshbseminaryr@gmail.com1) ARDUINO UNOArduino is an open-source electronics platform based on easy-to-use hardware and software. Arduino boards are able to read inputs - light on a sensor, a finger on a button, or a Twitter message - and turn it into an output - activating a motor, turning on an LED, publishing something online. You can tell your board what to do by sending a set of instructions to the microcontroller on the board. To do so you use the Arduino programming language (based on Wiring), and the Arduino Software (IDE), based on Processing.Over the years Arduino has been the brain of thousands of projects, from everyday objects to complex scientific instruments. A worldwide community of makers - students, hobbyists, artists, programmers, and professionals - has gathered around this open-source platform, their contributions have added up to an incredible amount of accessible knowledge that can be of great help to novices and experts alike.2) RELAY MODULEA relay is an electrically operated switch. It consists of a set of input terminals for a single or multiple control signals, and a set of operating contact terminals. The switch may have any number of contacts in multiple contact forms, such as make contacts, break contacts, or combinations thereof.Relays are used where it is necessary to control a circuit by an independent low-power signal, or where several circuits must be controlled by one signal. Relays were first used in long-distance telegraph circuits as signal repeaters: they refresh the signal coming in from one circuit by transmitting it on another circuit. Relays were used extensively in telephone exchanges and early computers to perform logical operations.The traditional form of a relay uses an electromagnet to close or open the contacts, but other operating principles have been invented, such as in solid-state relays which use semiconductor properties for control without relying on moving parts. Relays with calibrated operating characteristics and sometimes multiple operating coils are used to protect electrical circuits from overload or faults; in modern electric power systems these functions are performed by digital instruments still called protective relays.Latching relays require only a single pulse of control power to operate the switch persistently. Another pulse applied to a second set of control terminals, or a pulse with opposite polarity, resets the switch, while repeated pulses of the same kind have no effects. Magnetic latching relays are useful in applications when interrupted power should not affect the circuits that the relay is controlling.3) BLUETOOTH MODULEBluetooth is a wireless technology standard used for exchanging data between fixed and mobile devices over short distances using short-wavelength UHF radio waves In the industrial, scientific and medical radio bands, from 2.402 GHz to 2.480 GHz, and building personal area networks (PANs). It was originally conceived as a wireless alternative to RS-232 data cables.HC-05 module InformationHC-05 has red LED which indicates connection status, whether the Bluetooth is connected or not. Before connecting to HC-05 module this red LED blinks continuously in a periodic manner. When it gets connected to any other Bluetooth device, its blinking slows down to two seconds.This module works on 3.3 V. We can connect 5V supply voltage as well since the module has on board 5 to 3.3 V regulator.As HC-05 Bluetooth module has 3.3 V level for RX/TX and microcontroller can detect 3.3 V level, so, no need to shift transmit level of HC-05 module. But we need to shift the transmit voltage level from microcontroller to RX of HC-05 module. Thanks Pcbway for Sponsership

Please see the information package attached for details:https://www.hyperloopmanchester.com/assets/hyperloop-manchester-information-package.pdf Also, please see our website as well. You can find our information package pasted above in "Become a Partner" tab on our website:https://www.hyperloopmanchester.comABOUT USHyperloop Manchester is a student-led Hyperloop project organization aiming to compete in the Hyperloop competitions organized by SpaceX or other organisations.The team is founded in 2019 and has currenty around 70 members from different nationalities and backgrounds. Furthermore, the team consists of three main divisions and eight subdivisions.Hyperloop Manchester aims to participate in the first Hyperloop competition that will be arranged after the COVID-19 situation.Our Values:• Diversity – The team consists of around 80 members from multiple nationalities and different backgrounds. Hyperloop Manchester highly believes that the key of the solution to the problems comes from different ideas.• Teamwork – This is the core of Hyperloop Manchester. Everything in Hyperloop Manchester is done with teams and collaboration.• Passion – Everyone in Hyperloop Manchester is allocated in their teams according to their interests and passions. Therefore, every member is passionate about their involvement in the team.• Creativity – Tasks in the team are based on the creative ideas and solutions to improve the aspects of the Hyperloop pod.• Innovation – The value that essentially depicts the team is “innovation.” The team always aims to implement innovative applications in the designed Hyperloop pod and do research to continuously improve the Hyperloop structure.WHAT WE ARE CURRENTLY WORKING ONHyperman I is the Hyperloop pod designed by Hyperloop Manchester, which is powered by 18650 Li-Ion battery type using in multiple battery packs for each module. The electrical system consists of custom moduled built by using Teensy 4.0 microcontroller. O-DROID single board computer is at the centre of all controlling each module and interacting with the external environment which enables the user to track the sensor data, mapping, navigation, control, etc.Our pod, Hyperman I: Besides, the Mechanical team is currently working on the linear induction motor, braking and emergency braking, propulsion, levitation, and suspension. We can not share our design plans here since they are confidential.For high speed braking, eddy current braking will be used. For low speed braking, possibly, the friction braking will be used. Currently, this team is working on the electronics subsystems and the software implementation of the pod. The subsystems are categorised as follows: battery management system, power converter designs, motor controller board, brake electronics, and microcontroller motherboard. Hyperloop Manchester tracks and puts every development in electronics and software with reasonable deadlines for each task on Github: https://github.com/manchester-hyperloopThe diagrams for brake electronics, power converter board and track sensor unit are currently in progress. The help from PCBWay would be precious for us since it would be a big step for us to ease the manufacturing process of our prototype which we are aiming to start building it as soon as the facilities are open. The circuit boards for the modules are currently being designed by using Altium Designer. While designing the circuit boards, we are paying attention to create boards in adequate size and weight to keep the internal allocation of the pod as neat as possible. Since we are currently creating the pod infrastructure and established last year, we are now unable to share the 3D models of our PCB boards. PLEASE READ OUR INFORMATION PACKAGE VIA THE LINK AT THE BEGINNING OF THIS DESCRIPTION. For more information, please contact us by email below:hyperloopmanchester@gmail.com

Step 1: Get All the PartsThe parts needed in order to build this project are these:An Arduino Nano ▶ http://educ8s.tv/part/ArduinoNanoThe fingerprint sensor module ▶ http://educ8s.tv/part/FingerprintSensorA 1.44” color TFT display ▶ http://bit.ly/144TFTLCDA small breadboard ▶ http://educ8s.tv/part/SmallBreadboardSome wires ▶ http://bit.ly/Wires3InOnePowerbank ▶ http://educ8s.tv/part/PowerbankThe cost of this project is around $30. If you take in consideration the technology that this project uses, this cost is very low. 10 years ago, projects like this would cost a few hundred dolars!Step 2: The 1.44" LCD Display1 / 2This display is very fast. It uses the ILI9163C driver. It has a resolution of 128x128 pixels and it can display up to 260.000 colors. It is very easy to use with Arduino and it costs around 4$.The display uses the SPI protocol in order to communicate with the Arduino board. We only need to connect 8 wires in order to make it work. Let’s start.Connection with ArduinoVcc ▶ 5V pin of the ArduinoGND ▶ Arduino GND pinCS ▶ Digital Pin 10RST ▶ DIgital Pin 9A0 ▶ Digital Pin 8SDA ▶ Digital Pin 11SCK ▶ Digital Pin 13LED ▶ 3.3V pin of the ArduinoAs you can see this display is very easy to use with Arduino. It is very cheap, very fast, it is small in size and it only draws around 30mA of current. I think it is a nice display to use in projects that don’t require a big display but color would be nice.You can get it here ▶ http://bit.ly/144TFTLCDStep 3: The Fingerprint Sensor Module1 / 3The fingerprint sensor module is small, and nicely built and it uses some advanced DSP (Digital Signal Processing) chips inside.The sensor works like this. It is an optical sensor, which means it analyzes the photo of a finger. It then renders the image, makes some calculations, finds the features of that finger and then searches in its memory for a fingerprint with the same characteristics. It can achieve all that in less than a second!This module can store up to 1000 fingerprints in its memory and its false acceptance rate is less than 0.001% which makes it pretty secure! Great! We get all that in a very easy to use module and with very low cost! It is a really impressive technology!You can get it here ▶ http://educ8s.tv/part/FingerprintSensorStep 4: Connecting the Parts1 / 3Let’s now put all the parts together.First we have to connect the fingerprint sensor module. We plug in the cable at the back of the module. Please check the attached photo.Fingerprint Sensor ConnectionBlack Wire ▶ Arduino GNDRed Wire ▶ Arduino 5VGreen Wire ▶ Digital Pin 2White Wire ▶ Digital Pin 3We are now ready to connect the display to Arduino.Display ConnectionVcc ▶ 5V pin of the ArduinoGND ▶ Arduino GND pinCS ▶ Digital Pin 10RST ▶ DIgital Pin 9A0 ▶ Digital Pin 8SDA ▶ Digital Pin 11SCK ▶ Digital Pin 13LED ▶ 3.3V pin of the ArduinoThat’s it! We are ready to power up the project. As you see it works fine! Easy isn’t it?Step 5: The Code of the Project1 / 3Let’s now see, the software side of the project and how to enroll our fingerprints to the module’s embedded memory in order to recognize them.We need to download some libraries. First of all we need the Adafruit Fingerprint library, the Adafruit GFX library and the Sumotoy’s library for the display.https://github.com/adafruit/Adafruit-Fingerprint-Sensor-Libraryhttps://github.com/adafruit/Adafruit-GFX-Libraryhttps://github.com/sumotoy/TFT_ILI9163CFirst of all we have to upload the enroll example to our Arduino board. We go to File -> Examples -> Adafruit Fingerprint Sensor Library -> Enroll. With this example program we can store fingerprints in the FLASH memory of the module. We upload the sketch and we open the Serial Monitor. The program ask us to enter the ID to enroll. Then we place the finger on the sensor twice as we are instructed and the fingerprint is stored! You can store as many as 1000 fingerprints this way!Now, let’s load the code that I have developed. Thanks to Adafruit’s libraries the code of the project is very simple. Let's see a small part of the code.We start the sensor and the display, and we check for a finger on the sensor every 50ms. If there is a finger on the sensor we request the module to search if that finger is enrolled in it’s memory. If it finds the fingerprint in the memory it returns that fingerprints’ ID. Next it displays a welcome message and locks the screen again after a few seconds.As always you can find the code of the project attached in this tutorial. Since I update the code from time to time, for the latest version of the code please visit the project's website: http://educ8s.tv/arduino-fingerprint-sensor-module...Fingerprint.inoStep 6: Final ThoughtsI am really impressed by the performance and the ease of use of this fingerprint sensor module. With very low cost we can add biometric security features to our projects. That’s amazing. Projects like this would have been impossible for a maker even a few years back. That’s the beauty and power of open source hardware and software. After this first test I am going to use the fingerprint sensor module along with an electric lock in order to see if we can use this sensor in a real life situation, so stay tuned. Please let me know your thoughts about this sensor, in the comments section below. Thanks!Thanks Pcbway for Sponsorship 😊

It was designed as a development board for young developers.And it is designed for high school and middle school students to learn to code. it has many sensors on it. They have a five led, rgb led, two button,buzzer, ldr, ntc, temperature and humidity sensor, lcd, ultrasonic sensor and arduino UNO. This card, which contains many sensors and will be free for our students. And will be able to code with any program they want.(Arduino IDE,Scratch,MBlock etc.) This board is portable because it is small in size.I think it is important for disadvantaged individuals. Your support will make me and our students happy.This company has always supported us, so thank you very much.I am waiting for your support. Thanks pcbway :)

INTRODUCTIONHello! I'm a fourth-year undergraduate student at Washington University in St. Louis. I am currently studying Electrical Engineering, and am working on a team that is designing a LoRa Network that utilizes implantable GPS end nodes to track the movement of snakes in a local nature conservancy. Outside of school, I enjoy running, hiking, and swimming, and I love to read science fiction novels! My favorite authors are Isaac Asimov and Arthur C. Clarke. For our project, we are building these implantable trackers to a certain set of specifications given to us by an ecologist who works for the nature conservancy. The specifications for the implant are given as follows:It must be less than 15x40mm, so that it can be implanted into the snakeIt must have a battery life of up to 8months. This is because every time the battery is replaced, the snakes must undergo an invasive surgeryIt must take position data at least once per dayThese implants will then be part of a larger LoRa Network to send data back to a central server. The data will then be accessed from a front end visualization tool. A layout of our network is shown below:As can be seen above, our project consists of four main parts:The snake implants as end nodes of the networkThe LoRa gateway, which will be mounted to a tree somewhere in the nature conservancyThe network server that will hold our data that we collectThe application server on the front end that will allow our ecologist client to access the position data stored in the network server.Snake Implants: Our Custom PCBOne major component of our project, as mentioned earlier, is the implant for the snakes. We have designed a custom PCB to do this. This custom PCB follows the limitations regarding size, battery life, and position, all given above. Our PCB consists of two main parts. It has a microcontroller with a LoRa radio module, and a GPS unit to take position data. That position data will then be sent out through the radio module to the rest of the LoRa network. For our microcontroller/radio, we decided to use the SAMR34, for three main reasons:It complies with size constraints: 6x6mm BGA package IC, we will have to design circuitry to support RF capabilities (antenna connector, RF switch). It’s ultra low power: 1.4µA standbyCommunication requirements: Can communicate over the 868 and 915 MHz bands, can use UART, SPI, or I2C to interface with the GPSFor the GPS unit, we decided to use the Wurth Electronik Erinome-II, for three main reasons:It complies with size constraints: The module is 7x7x1.6mmIt’s low power: Low power consumption compared to other GPS modules, but a larger power drain than the MCUCommunication requirements: Can use UART and I2C interfacesSchematicThe schematic for our PCB is located in our GitHub. ComponentsThe BOM is located in our GitHub. Significant components for the microcontroller include:SAMR34: This is our microcontrollerSKY13373_460LF SP3T Switch: This is a switching module that we will use to connect our LoRa antenna to our MCUAntenna: We will be using a simple wire antenna cut down to 1/4 wavelength for the 915MHz antenna.Significant components for the GPS module include:Erinome-II: This is our GPS moduleWE-MCA Multilayer Chip Antenna: This is our GPS antennaTDK SAW RF Filter B4310: This will be our low loss RF filter for the GPS signalBuild filesThe Gerber files and drill files are located in our GitHub.Some Notes for our DesignThe board is currently 65x22mm. We will test this version first, and then scale it down appropriately after we have a working prototype.ConclusionSupport from PCBWay would be an enormous advantage to our team. As a team of students working on a design project, we have a very limited budget, and are always looking for ways to work within our cost constraints so that we can make this project a reality. PCBWay's fast turn-around time would be another advantage that would allow us to work as efficiently as possible over the course of the semester. We are excited to build our skills and abilities as engineers, and look forward to completing this project as a milestone in our education. Thank you!

The IdeaIn February 2020, amidst the CoVid-19 pandemic, concerns about a global shortage of ventilators began to surface and these worries rapidly became a reality. We sought to find a local solution to the rapidly evolving crisis, working alongside the hundreds of open-source projects worldwide, aimed at tackling the same problem. We believe that we add a novel solution to an evolving landscape of low cost ventilators. Built using readily-available materials, our aim was to produce a device capable of being produced at a sub-$100 price point for low-resource settings, as well as a more robust model, both founded using the same principles.Modern commercial ventilators are complex machines with specialized components. According to the Department of Health and Social Care guidance statement on Rapidly Manufactured Ventilator System Specification (20/03/2020), ventilators must meet certain criteria to be considered “clinically acceptable”.RMVS-compatible ventilators must be capable of providing one of two modes of ventilation. The first is mandatory ventilation, wherein the patient is completely sedated, and all work of breathing must be done by the ventilator, according to preset criteria (e.g. tidal volume, respiratory rate, E/I ratio). Supportive ventilation, on the other hand, is used when the patient can do some work on their own. The machine must be able to sense when the patient is attempting to inhale (and provide inspiratory support), and when the patient is exhaling. We aim to accomplish both.The DesignHow it worksThe basis of the gVent system is gravity, water, and two cylindrical vessels fitted together to create a pressurized system. This pressure can then be used to ventilate a sick patient. The two vessels are each sealed at one end. The larger vessel is filled with water; the smaller vessel is placed inside the larger vessel.Air is then introduced into the system from the hospital's gas outlets. A clinician can thus control the FiO2 by titrating the amount of hospital air to the amount of delivered oxygen. As this pressurized gas builds up in the system, the top cylinder is displaced upwards from its resting position, commensurate to the weight of the top cylinder (which can have weight added to adjust the pressure).To deliver air, a valve is opened, releasing the pressurized air/O2 mixture through to the intubated patient. With the valve controlled on an electronic circuit, the operator has the ability to control important respiratory parameters, including respiratory rate, I:E ratio, and the volume of air delivered to the patient.Maintenance and cleaning are relatively simple. The majority of the main ventilator components are assembled with un-plasticized PVC, an inert, chemically resistant substance. Insertion of parts can be accomplished through plastic welding, PVC glue or friction fitting with Teflon tape. All of these are suitable for drinking water purposes. The only interface between air going to the patient and the outside environment is through the water in the system. As this leads to the small potential for contamination in the system, this water is constantly cleaned and sanitized throughout the use of the ventilator, by using UV sterilization or a concentrated saline solution .What features make the gVent unique?One of this system’s greatest strengths is its ability to give constant inspiratory pressures, which greatly reduces the risk of barotrauma which is inherent in many low cost ventilator designs. This constant plateau pressure, which mimics a commercial ventilator’s air delivery, has been a popular feature among the end users who have evaluated our device, including respiratory therapists, anesthesiologists, and intensivists. We feel that this unique and reliable method of delivery sets this ventilator apart from many other designs.Find out more at gvent.ca

It was designed as a development board for young developers.And it is designed for high school and middle school students to learn to code. it has many sensors on it. They have a five led, rgb led, two button,buzzer, remote control, ldr, ntc, temperature and humidity sensor, lcd, bluetooth, motor shield, ultrasonic sensor and arduino nano. This card, which contains many sensors and will be free for our students. And will be able to code with any program they want.(Arduino IDE,Scratch,MBlock etc.) This board is portable because it is small in size.I think it is important for disadvantaged individuals.This company has always supported us, so thank you very much.I am waiting for your support. Thanks pcbway :)

Hello Friends.Welcome. In this post, I will introduce you my Lightweight Arduino GSM Mobile phone. The lightweight mobile is capable of the following National/International features:Make CallsReceive CallsSend SMSReceive SMSIn this project, I used the GSM SIM900A module to connect to the mobile network. It is an adorable all-in-one cellular module that lets you add voice, SMS and data to your projects. It works on frequencies 900/1800MHz and comes with the friendly RS232 which can be easily interfaced with any MCUs, the baud rate is adjustable from 9600 – 115200 through AT Commands.I also used a display to visualize GUI interfaces, I selected an LCD touch display by Nextion, trust me it is really an awesome display. Nextion adopts a new and easy way to interface any of your projects through UART. Its easy-to-use configuration software (Nextion Editor) allows you to design your own interfaces using GUI commands and makes the pieces of your development effortless, in turn you can save lots of program space in your MCUs. Thanks to Nextion!On its own, the GSM module and the Nextion touch display can’t do anything. It requires a microcontroller to drive it. At the heart is an Arduino Uno to drive the lightweight GSM Mobile phone, which can send and receive commands over its RX/TX pins.If you are interested making yours, this guide will show you how to build and upload the source codes to get your project up and running. This is a fairly straightforward project, but an intermediate one especially when you take into account the complexity of the codes.This project is also a great example of how to use Arduino especially for string & character handling, as well as for you to get acquainted with the new Nextion TFT Intelligent LCD Touch Display and using AT commands for the GSM module. Hope you will enjoy and find my post interesting. Now let us make it.Parts Required:Here’s the needed parts for this example.Arduino Uno.SIM900A GSM module.Nextion TFT Intelligent LCD Touch display.SIM Card.Connecting Wires.There’s also some optional accessories.External Mic & Speaker.Stylus.Wiring:Connect the GSM module and the Nextion Display to your Arduino by following the appropriate steps below.Nextion +5V to Arduino VDD_5v.Nextion RX to Arduino pin 11Nextion Tx to Arduino pin 10Nextion GND to Arduino GND_0v.GSM Rx to Arduino pin 1GSM TX to Arduino pin 0GSM GND to Arduino GND_0v.SchematicNOTE: If your SIM card is locked with a PIN code. You can either disable the PIN or enter the PIN via the ‘AT+CPIN’ command just before you can connect the network. Example: “AT+CPIN=1234”.Setup:Next, I will show you how to prepare the .HMI (Human Machine Interface) for the Nextion display, without forgetting the Arduino sketch.Tools Required:Nextion Editor.Paint.net.Arduino IDE.Program the Nextion display:To make Nextion display the interfaces, the first thing to do is to design an HMI file in the Nextion Editor. This editor allow you to design your interfaces using plug-and-play components like (Text, button, progress bar, pictures, gauge, checkbox, radiobox and much more), for which you can set codes & properties for each of these components.In this project, I used 8 pages to make the interactive GUI. Most of the icons which I used for the implementation are the freely available Android Icons and can be downloaded from this [link]. I used paint.net (Open Source editor) to edit/resize all the pictures and to create the invert of the icons, to give the feeling of touch when components like buttons are pressed. Touch events like (Press & Release) are also included when components are touched. If you are interested to acquire more about Nextion Instruction Set you can visit the wiki page here.Programming the Nextion display is just as easy as abc but a time consuming process especially when implementing complex features like numpad & keyboards. However, I wish to mention that at the end you will really enjoy the outcomes, the end results are enormously awesome.Steps:Load the .HMI file into the editor. Scroll down to find my GitHub repository section of this page.Compile the .HMI file (just under the menu bar).Go to file > Open build folder > copy the .tft file > paste into SD card. Note: make sure the SD card is formatted to FAT32.Once copied, insert the SD card into the Nextion and then power_on.Wait for the .tft to upload.Power_off the Nextion, securely remove the SD card and then again power_on.Voila, you should see your new interfaces on the Nextion Display.SimulationNexiton also provide a handy simulator to test/debug the .HMI files well beforehand you connect your display to your MCUs. The “Instruction Input Area”, allows you to insert commands such as change page, hide/show picture, enable/disable button, enable/disable/insert text & much more to the Nextion display. On the other side, the “Simulator Return Data” gives you the responses from touch events when components on the Nextion display are pressed or even for the commands triggered to the Nextion.Program the Arduino:The Ardiuno Uno is the brain of the whole mobile system, the Arduino acts as a middle-ware which interfaces the GSM Module and the Nextion display.For this project, I did not used any Nextion libraries, as it seems difficult to understand and lack documentations and also my sketches does not compiled when using Nextion libraries, hope to get improvements soon. As such, I decided to move on without the use of libraries, seems to be difficult right? Believe me it’s not.To get the complete code, simply scroll down to find my GitHub repository section of this page. Copy the code, and paste it into a new sketch in the Arduino IDE. Save it, upload it to your Arduino.That’s all for the software part! Compile the code. If there are no errors, congratulations your devices is now configured to automatically connect to the cellular Network through the GSM module. Open the Serial monitor, you should see the AT command logs for each events triggered from the Nextion Display.this project value is $40 dolors but with the help of pcb way i am going to make this project at only cost of $ 30 because i am going to order arduino uno in pcb along with some pcbs and wanted to make some more projects soon. and the code below please check it out friends.{ #include <SoftwareSerial.h>SoftwareSerial nextionSerial(10, 11); //Rx, Txchar msisdn[30], ATcomm[30];String rawMsg, pageNum, msg, pls;void setup(){//Initialize HardwareSerial|SoftwareSerial|GSM module|Nextion display. Perform GSM Location Update. Serial.begin(9600);nextionSerial.begin(9600); while(!Serial){;}power_on();delay(3000);}void loop(){ while(nextionSerial.available()){rawMsg.concat(char(nextionSerial.read()));}delay(10); //Read the SoftwareSerial. if(!nextionSerial.available()){ if(rawMsg.length()){ pageNum = rawMsg[rawMsg.length()-4]; //Read Nextion: get the page number. msg = rawMsg.substring(1, rawMsg.length()-4); //Read Nextion: get the Raw Msges from Nextion. if((pageNum == "0") && (msg.length() != 0)){querySMS(msg);} //Read Nextion: page0, Query all SMS from the GSM Buffer. if((pageNum == "1") && (msg.length() != 0)){connectCall(msg);} //Read Nextion: page1, Dial and Call the B-number. if((pageNum == "2") && (msg.length() != 0)){releaseCall(msg);} //Read Nextion: page2, Release the call. if((pageNum == "3") && (msg.length() != 0)){sendSMS(msg);} //Read Nextion: Page3, Get the content typed in page 3 and send SMS. if((pageNum == "5") && (msg.length() != 0)){answerCall(msg);} //Read Nextion: page5, Answer Incoming calls. if((pageNum == "6") && (msg.length() != 0)){delReadSMS(msg);} //Read Nextion: page6, Delete read SMS. if((pageNum == "7") && (msg.length() != 0)){delSMS(msg);} //Read Nextion: page7, Delete all SMS (incl unread) from the GSM Buffer. rawMsg="";pageNum="";msg=""; } } while(Serial.available()){pls=Serial.readString();} //Read the HardwareSerial. if(!Serial.available() && pls.length()){ if(pls.indexOf("NO CARRIER") != -1){ //Goto to page0, if B-party Hang up. String nextionCallStr = "page page0";writeString(nextionCallStr); sendATcommand("AT", "OK", 2000); } if(pls.indexOf("BUSY") != -1){ //Goto to page0, if B-Number rejects incoming calls. String nextionCallStr = "page page0";writeString(nextionCallStr); sendATcommand("AT", "OK", 2000); } if(pls.indexOf("NO ANSWER") != -1){ //Goto to page0, if B-Number does not answer incoming calls. String nextionCallStr = "page page0";writeString(nextionCallStr); sendATcommand("AT", "OK", 2000); } if(pls.indexOf("+CLIP") != -1){ //Goto to page5, for any incoming calls. int msisdnFirstDelim = pls.indexOf("\""); int msisdnSeconddDelim = pls.indexOf("\"", msisdnFirstDelim+1); String mobNum = pls.substring(msisdnFirstDelim+1, msisdnSeconddDelim); String nextionCallStr = "page page5";writeString(nextionCallStr); nextionCallStr = "page5.t1.txt=\""+mobNum+"\"";writeString(nextionCallStr); nextionCallStr = "page5.t0.txt=\"Incoming Call\"";writeString(nextionCallStr); nextionCallStr = "page5.p0.pic=20";writeString(nextionCallStr); sendATcommand("AT", "OK", 2000); } if(pls.indexOf("+CMTI") != -1){ //If new Msges|Query Msges|Display star picture. smsComputation(); String nextionCallStr = "vis p2,1";writeString(nextionCallStr); }pls=""; }}void power_on(){ //Initialize GSM module, perform Location Update, latch to cellular network, read GSM SMS buffer. uint8_t answer = 0; while(answer == 0){answer = sendATcommand("AT", "OK", 2000);} while((sendATcommand("AT+CREG?", "+CREG: 0,1", 500) || sendATcommand("AT+CREG?", "+CREG: 0,5", 500)) == 0); writeString("page0.t0.txt=\"Searching...\"");delay(2000);searchNetwork(); delay(2000);smsComputation(); }int8_t sendATcommand(char* ATcommand, char* expected_answer, unsigned int timeout){//Function to send AT commands and read responses to/from the GSM module. uint8_t x=0, answer=0; char GSMreponse[100]; unsigned long previous; memset(GSMreponse, '\0', 100); delay(100); while(Serial.available()>0) Serial.read(); Serial.println(ATcommand); previous = millis(); do{if(Serial.available() != 0){GSMreponse[x] = Serial.read(); x++; if(strstr(GSMreponse, expected_answer) != NULL){answer = 1;} }}while((answer == 0) &&((millis() - previous) < timeout)); return answer;}void searchNetwork(){//Function to search for available cellular networks|Get network registration|Send attched network to Nextion display. String sendCOPScommand, readCOPScommad, networkOperator, sendNetOperator; int startCOPS=-1, copsFirstcomma, copsSecondcomma, copsNL; while(Serial.available())(Serial.read()); sendCOPScommand="AT+COPS?"; Serial.println(sendCOPScommand); while(!Serial.available()); while(Serial.available()){readCOPScommad=Serial.readString();} if(readCOPScommad.indexOf("+COPS:") != -1){ copsFirstcomma=readCOPScommad.indexOf(",", startCOPS+1); copsSecondcomma=readCOPScommad.indexOf(",", copsFirstcomma+2); copsNL=readCOPScommad.indexOf("\n", copsSecondcomma+1); networkOperator=readCOPScommad.substring(copsSecondcomma+2, copsNL-2); sendNetOperator="page0.t0.txt=\""+networkOperator+"\"";writeString(sendNetOperator); }sendCOPScommand=readCOPScommad=networkOperator="";copsFirstcomma=copsNL=0;}void querySMS(String querySMSContent){//Function to query all SMS from the GSM buffer. Serial.println(querySMSContent);}void connectCall(String conCallContent){//Function to Initiate Mobile Originated Call To Dial B-Number. String nextionCallStr = "page2.t0.txt=\"Connecting\"";writeString(nextionCallStr); while((sendATcommand("AT+CREG?", "+CREG: 0,1", 500) || //0,1: User registered, home network. sendATcommand("AT+CREG?", "+CREG: 0,5", 500)) == 0); //0,5: User registered, roaming. conCallContent.toCharArray(msisdn, rawMsg.length()); sprintf(ATcomm, "ATD%s;", msisdn);sendATcommand(ATcomm, "OK", 10000); nextionCallStr = "page2.t0.txt=\"Calling\"";writeString(nextionCallStr); memset(msisdn, '\0', 30);memset(ATcomm, '\0', 30);}void releaseCall(String relCallContent){//Function to Hang up a call. Serial.println(relCallContent); }void sendSMS(String sendSMSContent){//Function to get content typed from Nextion|select SMS Message Format|Send SMS Message to B-number. int firstDelim = sendSMSContent.indexOf(byte(189)); int secondDelim = sendSMSContent.indexOf(byte(189), firstDelim+1); String smsContent = sendSMSContent.substring(0, firstDelim); String phoneNumber = sendSMSContent.substring(firstDelim+1, secondDelim); while((sendATcommand("AT+CREG?", "+CREG: 0,1", 500) || sendATcommand("AT+CREG?", "+CREG: 0,5", 500)) == 0); if(sendATcommand("AT+CMGF=1", "OK", 2500)){phoneNumber.toCharArray(msisdn, msg.length());sprintf(ATcomm, "AT+CMGS=\"%s\"", msisdn); if(sendATcommand(ATcomm, ">", 2000)){Serial.println(smsContent);Serial.write(0x1A); if(sendATcommand("", "OK", 20000)){Serial.println("message sent");} else{Serial.println("error sending");}} else{Serial.println("not found >");} }smsContent=""; phoneNumber="";memset(msisdn, '\0', 30);memset(ATcomm, '\0', 30);}void answerCall(String ansCallContent){//Function to change Nextion text and picture, if Incoming call is accepted. Serial.println(ansCallContent); String nextionCallStr = "page5.t0.txt=\"Connected\"";writeString(nextionCallStr); nextionCallStr = "page5.p0.pic=21";writeString(nextionCallStr);}void smsComputation(){//Function to Read SMS from GSM buffer. Normally, SMS buffer size=20 & select only 10 SMS. int startCPMS=-1, CPMS1comma, CPMS2comma, msgCount=0; int startCMGR=-1, cmgrIndex, cmgrNLindex, smsNLindex; String sendCPMScommand, readCPMScommand, CPMSMsgCount; String sendCMGRcommand, readCMGRcommand, inCMGR, inSMS, dspCount; sendCPMScommand = "AT+CPMS?"; Serial.println(sendCPMScommand); while(!Serial.available()); while(Serial.available()){readCPMScommand=Serial.readString();} if(readCPMScommand.indexOf("+CPMS:") != -1){ CPMS1comma = readCPMScommand.indexOf(",", startCPMS+1); CPMS2comma = readCPMScommand.indexOf(",", CPMS1comma+1); CPMSMsgCount = readCPMScommand.substring(CPMS1comma+1, CPMS2comma);msgCount = CPMSMsgCount.toInt(); dspCount="page6.t51.txt=\""+CPMSMsgCount+"\"";writeString(dspCount); if((msgCount > 0) && (msgCount <= 10)){writeString("page6.p1.pic=35");} if(msgCount > 10){writeString("page6.p1.pic=34");}int spotSelect = 0; while(Serial.available())(Serial.read()); if(msgCount != 0){ for(int iSMS=20; iSMS>0; iSMS--){ sendCMGRcommand="AT+CMGR="+String(iSMS, DEC); Serial.println(sendCMGRcommand); while(!Serial.available()); while(Serial.available()){readCMGRcommand=Serial.readString();} if((readCMGRcommand.indexOf("+CMGR:")!=-1) && (spotSelect<(50))){ cmgrIndex = readCMGRcommand.indexOf("+CMGR:", startCMGR+1); cmgrNLindex = readCMGRcommand.indexOf("\n", cmgrIndex+1); inCMGR = readCMGRcommand.substring(cmgrIndex, cmgrNLindex-1); smsNLindex = readCMGRcommand.indexOf("\n", cmgrNLindex+1); inSMS = readCMGRcommand.substring(cmgrNLindex+1, smsNLindex-1); readSMS(inCMGR, inSMS, iSMS, spotSelect); spotSelect=spotSelect+5; }startCMGR=-1;cmgrIndex=cmgrNLindex=smsNLindex=0;inCMGR=inSMS=readCMGRcommand=""; } } }readCPMScommand=CPMSMsgCount="";startCPMS=-1;CPMS1comma=CPMS2comma=msgCount=0;}void readSMS(String readinCMGR, String readinSMS, int readiSMS ,int readinspotSelect){//Function to parse the loaded SMS from GSM module and present to Nextion display. int startComma=-1, firstColon, firstComma, secondComma, thirdComma; String smsSeqNum, smsStatus, smsBNumber, smsDateTime, actualSMS; String startOfPage="page6.t", middleOfPage=".txt=\"", pageContent; firstColon = readinCMGR.indexOf(":", startComma+1);firstComma = readinCMGR.indexOf(",", startComma+1); secondComma = readinCMGR.indexOf(",", firstComma+1);thirdComma = readinCMGR.indexOf(",", secondComma+1);smsSeqNum = String(readiSMS); smsStatus = readinCMGR.substring(firstColon+7, firstComma-1); smsBNumber = readinCMGR.substring(firstComma+2, secondComma-1); smsDateTime = readinCMGR.substring(thirdComma+2, readinCMGR.length()-1);actualSMS = readinSMS.substring(0, readinSMS.length()); pageContent = startOfPage + readinspotSelect + middleOfPage + smsStatus+"\"";writeString(pageContent);readinspotSelect++; pageContent = startOfPage + readinspotSelect + middleOfPage + smsBNumber+"\"";writeString(pageContent);readinspotSelect++; pageContent = startOfPage + readinspotSelect + middleOfPage + smsSeqNum+"\"";writeString(pageContent);readinspotSelect++; pageContent = startOfPage + readinspotSelect + middleOfPage + smsDateTime+"\"";writeString(pageContent);readinspotSelect++; pageContent = startOfPage + readinspotSelect + middleOfPage + actualSMS+"\"";writeString(pageContent); smsSeqNum=smsStatus=smsBNumber=smsDateTime=actualSMS=pageContent="";firstColon=firstComma=secondComma=thirdComma=readinspotSelect=0;}void delReadSMS(String inDelReadSMS){//Function to delete only read SMS from the GSM Buffer. Serial.println(inDelReadSMS);}void delSMS(String indelSMS){//Function to delete all (Read/Unread) SMS from the GSM Buffer. Serial.println(indelSMS);}void writeString(String stringData){//Function to send commands to the Nextion display. for(int i=0; i < stringData.length(); i++){nextionSerial.write(stringData[i]);} nextionSerial.write(0xff);nextionSerial.write(0xff);nextionSerial.write(0xff);}this is the code which u can upload and and complete this project. please like my project guys and i am going create a youtube and i want you to support me there. thank u pcb way.

For more info go to: https://www.instagram.com/zerokeyusbWeb: https://zerokeyusb.com/Patreon: https://www.patreon.com/bePatron?u=40996924DO YOU KEEP FORGETTING PASSWORDS?This isn’t uncommon. With so many websites and so many log ins, remembering all your passwords can be impossible. What one website requires may be different from another, and sometimes, these sites even ask for multiple passwords that are just difficult to recall. Your solution is keeping a note on your phone or writing them down on paper. But are these safe and secure? Not at all. They can also be deleted or worse stolen by a hacker, so what is there to do now? With ZeroKeyUSB, convenience and security are covered!ONE PIN FOR ALLZeroKeyUSB is the world’s first plug-and-play encryption device that stores all of your accounts securely offline. Unlike smartcards that are susceptible to keylogger stealing the user’s PIN. This PIN is securely entered on the device itself. ZeroKeyUSB has multi-color alerts that turn green if you’ve entered the correct PIN, red if you’ve entered the wrong one, and blue for U2F authentication.SECURES INFORMATIONBecause your device is PIN protected, you can be sure that your personal data is safely stored. This means that even if hacking occurs or a website is breached, your personal information will not be leaked. This is because ZeroKeyUSB stores your passwords in secure hardware offline and by supporting strong, 2-factor authentication methods.PROTECTS WITHOUT COMPROMISEZeroKeyUSB supports any website or application with a secure (up to 56 character long) password. It also supports 2-factor authentication. This simply means that you can use this device to log into your computer, your online account, or pretty much anything. No need to remember your passwords, our device will type it in for you. As a result, you get to protect both your credentials and the things you want to access. You get an additional layer of protection and can prevent security breaches.AN ALL-IN-ONE SOLUTION TO YOUR PASSWORD DILEMMA

About the Team Our team was founded in 2008 and since then it worthily represents the National Technical University of Athens in the worldwide competitions of Formula Student. The objective of our team is to conduct research, design and manufacture a Formula-style racing car, with which it will take part in these competitions. This year, Prom Racing, following the lead of the global tendency and continuing its ever-increasing progress, is aiming to manufacture its very first electric racing car, after attending the Formula Student Combustion competition for 12 years. Our goals · Drawing upon our design and manufacturing experience from our last year's car and based on our experience and the feedback given by the judges at the competitions over the years, our team, for a second year in a row, aims to manufacture a Full Carbon Monocoque Chassis, which will be improved in several ways and designed to suitably match the new Powertrain. One of our basic goals is to keep the weight as low as possible, lower the center of gravity and increase the stiffness of the chassis and the suspension. The department of Aerodynamics has as its upper goal to use more specific models of research, which will be applied on the study of quite complex aerodynamic geometries. The high voltage sub-team, in cooperation with the vehicle dynamics department, chose, by the use of simulations and analysis, the new motor, the most suitable assemblies and battery cells. Moreover, tests are accomplished on the new telemetry system, with the aim of increasing the range and the transmission speed.· However, the most difficult part of this year's undertaking has been the finding of resources and funding, due to both the fact that a transition from a combustion to an electric racing car entails high costs and the unfavorable financial situation prevailing in our country, in general. Thus, in order to eliminate these difficulties to the greatest extent possible, we composed, since the beginning, a detailed budget, so that we know the financial needs that will arise during the year and we sought to offer a significant number of professional compensatory benefits, with the intention of attracting sponsors. These perks were categorized into sponsorship packages, always based on meritocracy. Furthermore, one of the main goals of our team is to develop close relationships with our sponsors, who are our supporters in our demanding endeavor.· This year, our Marketing Department is trying to establish Prom Racing as a well-known, recognizable brand. One of our highest priorities is to get the Greeks more familiar with the Formula Student Competition and, of course, to make known the Prom Racing's achievements to them. In order to accomplish this plan of ours, we reconsidered our whole marketing strategy and we decided to start off by following some basic steps. Specifically, we have reorganized our social media strategy and we tried to attract a permanent and loyal audience. Our marketing innovation is the "Prom Show", the official YouTube show of our team, in which the everyday routine in Prom Racing is presented and, additionally, a lot of challenges that our members have to face.· Last but not least, a better planning of the team structure has begun, via well-placed recruitments throughout the year, which will highly contribute in our team's most gradual transition possible to the Driverless (without a driver) Class of Formula Student over a time period of 2 years. Our Printed Circuit Boards: Cooling System The cooling PCB fulfills the key role to control the operational area of the radiator fan and the water pumps. Precharge A circuit which ensures that an intermediate circuit is pre-charged to at least 95 % of the actual accumulator voltage before closing the second Accumulator Isolation Relay. Discharge/TSAL Discharge is an analog circuit for safety reasons, in order to discharge an charged capacitor between the accumulator box and the inverter of our formula car. TSAL is an analog circuit, which indicates the tractive system status with multiple leds. Dashboard This PCB is responsible for many actions in the formula car, including handling the buttons that interact with the shutdown circuit as well as the ready to drive sequence (a characteristic sound defined by the rules of the contest). The Dashboard PCB also activates the Ready to drive Sound and other driver controls, such as the DRS, the dashboard screen navigation buttons, the drivetrain setup knob and the launch control button.

We can easily operate AC appliances either ON or OFF but the case is different when we want to change the intensity of light or FAN speed.Then AC dimmers comes handy. This pcb layout is for the AC dimmer. This project is WIFI based AC dimmer where we can control the power provides to the appliances.Following are the components used for this project.cl - CPl : Capacitor_THT:CP_Radial_DS.0mm_P2.50mmc2 - C : Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mmc3 - CPl : Capacitor_THT:CP_Radial_DS.Omm_P2.50mmc4 - C : Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mmDl - 1N4007 : Diode_THT:D_DO-41_SOD81_P10.1émm HorizontalD2 - 1N4007 : Diode_THT:D_DO-41_SOD81_P10.1émm HorizontalD3 - 1N4007 : Diode_THT:D_DO-41_SOD81_P10.1émm HorizontalDa - 1N4007 : Diode_THT:D_DO-41_SOD81_P10.1émm HorizontalDS - LED : LED _SMD:LED 120€_321éMetric_Padl.42x1.7S5mm_HandSolderdl - UART : Connector _PinHeader_2.54mm:PinHeader_1x0S_P2.S4mm_VerticalJ2 - AC_IN : TerminalBlock:TerminalBlock_bornier-2_P5.08mmJ3 - LOAD : TerminalBlock:TerminalBlock_bornier-2_P5.08mmMH1 - MountingHole : MountingHole:MountingHole_3.2mm_M3_IS014580MH2 - MountingHole : MountingHole:MountingHole_3.2mm_M3_IS014580MH3 - MountingHole : MountingHole:MountingHole_3.2mm_M3_IS014580MH4 - MountingHole : MountingHole:MountingHole_ 3.2mm _M3_1S014580Ql - BI136-S500 : Package_TO_SOT_THT:T0-220-3_VerticalRl - R : Resistor_SMD:R_1206_3216Metric_Padl.42x1.75mm_HandSolderR2 - R : Resistor_SMD:R_1206_3216Metric_Padl.42x1.75mm_HandSolderR3 - R : Resistor_SMD:R_1206_321é6Metric_Padl.42x1.75mm_HandSolderR4 - R : Resistor_SMD:R_1206_3216Metric_Padl.42x1.75mm_HandSolderRS - R : Resistor_SMD:R_1206_3216Metric_Padl.42x1.75mm_HandSolderRE - R : Resistor_SMD:R_1206_3216Metric_Padl.42x1.75mm_HandSolderR7 - R : Resistor_SMD:R_1206_3216Metric_Padl.42x1.75mm_HandSolderRS - R : Resistor_SMD:R_1206_3216Metric_Padl.42x1.75mm_HandSolderRS - R : Resistor_SMD:R_1206_3216Metric_Padl.42x1.75mm_HandSolderR1O - R : Resistor_SMD:R_1206_3216Metric_Padl.42x1.75mm_HandSolderSW1 - Flash : Button_Switch_THT:SW_PUSH_émm_HSmmSW2 - RESET : Button_Switch_THT:SW_PUSH_émm_HSmmUl - MOC3021M : Package_DIP:DIP-€_W7.62mm_LongPadsU2 - 4N25 : Package_DIP:DIP-€_W7.é2mmU3 - 1M1117-3.3 : Package_TO_SOT_SMD:SOT-223-3_TabPin2U4 - HLK-PMOS : Power_Supply:HLK-PMOS

In a microcontroller programming we need a very important tool as a connecting bridge between the computer and the microcontroller, the tool uses a usb port so called usbasp.The market has sold a lot of kits that are very compact so the features are very limited and also require a cable to the minimum system which is certainly very inefficient. Here I have a project to make the tool but it can be more compact and easy to use Because it no longer requires cables and minimum system. I designed the layout of this circuit with two layers, therefore I hope to get pcb with two layersAnd it can be beneficial in the activity to program a microcontroller.

Hii everyone.Myself Kamal ,recently i decided to arrange lighting system to my building staircase as few days ago my friend has fallen from the stairs as at night time the staircase is really so dark.So i started making it.In this circuit the first block is monostable multivibrator as it is used for triggering and next block is astable multivibrator which is used for supplying clock to the circuit .The next block i used is 5 bit counter made using JK flipflops and outputs of counter is given to 5 bit decoder and next main block is D flipflops which is very important is storing previous bit.And finally the outputs of D flipflops are given to LED driver circuit as i am using 1 watt LED.Working: When trigger is pressed,monostable output goes high and clock starts now and so counter starts counting and all the LED's glow one by one sequentially and after about 1 minute the monostable output goes low and so the reset of D flipflops are activated and so all LED's turon off after one minute automatically.For making this circuit i used 555 ic , JK flipflops,D flipflops and some resistors and capacitors and voltage regulators.And i implemented this circuit on a 4 layer PCB.I simulated the circuit in proteus software and i found that it is working same as i thought and i used proteus for 1st time and i found it very helpful and it is really good.The above shown is part of a circuit the outputs of all and gates are given to d flip flops and LED's are connected to output of D flipflops.(Not gates are used because the outputs of decoder are active low).I heard a lot of pcb way on social media and so i thought of sponsoring here.Thank you.

Hi friends I have decided to make a Pi station using Raspberry Pi we can play games in it . It is almost a clone of play station 1 . But there are a lot of differences between playstation and Pi station. I decided to make this Pi station because play station is bit costlier than the raspberry Pi station . The raspberry Pi is cheaper and we can costimise the case which ever we want using the 3d builder. And there are a lot benefits using raspberry Pi. Such as using Raspberry Pi we can make a computer and android phone using different operating systems. But play station has only games and we should satisfied with . And Pi station costs around 3500 INR I think it is very cheap Pi station less the cost more the benefits we have with raspberry Pi. We can make it more portable using Raspberry Pi zero or Raspberry Pi zero w they costs only around 1800 to 2300 INR . You can also see in below image how size variation is there between playstation and raspberry Pi zero station. See u can see a lot of size difference between Pi station and the play station.And cable connections are also easy to understand . The cable connections are shown below connect all the wires as shown to get the better results. Check it out.In first image we can see the connections for the fan , led , on and off switch and how to connect them to the GPIO pins whihich are present on the raspberry Pi in the second image u can see the connections for the HDMI and power cable and the top .and usb and keyboard connections on the left side it very easy to understand the connections right. And know I will show u the images of the Pi stion station case which suits to the raspberry Pi 3 please check it out below guys.This Pi station case looks like this . And know I will show u the overview of the Pi station after the completion of the project.please check it .And here our project explanation is completed the items we need for this complete buils is 1.raspberry Pi2.3d printed case 3.cooling fan4.led light.5. On and off button 6. Set of heat sinks That's it only these fees items are needed for these build and these costs only around 3500 or 4000 INR.This is very budjet build and there is nice gaming experience and no lags are there during gameplay u can check it out by making this project. This project value is $ 25 dollors.