About Arjuna EV UGM:Arjuna EV UGM is a Formula SAE from the Gadjah Mada University planning to compete in Formula SAE Japan in the 2022 competition season. Formula SAE is an international competition for university students to develop a formula race car and improve their engineer talents and skills. Arjuna EV UGM is a team of young and talented students building an electric vehicle race car.Temperature Sensor Extension Board:From the experience of the previous generation, we realized that we need a device for detecting battery temperature according to the Formula SAE specifications. This device is made to sense 24 thermistors each of which is a negative temperature coefficient (NTC). The NTC serves as a temperature sensor. This device can monitor 48 battery temperatures simultaneously. A multiplexer 4052 is used for the data distribution system that alternately transfers data reading from NTC to Arduino Nano which then determines whether the temperature exceeds the limit or not. The system uses an optoisolator to keep the device galvanically isolated between the modules according to Formula SAE rules. this system can be set to be Master Board and Slave Board. This board is then stacked to the BMS via Board-to-Board Connector.Words to PCBWay:As a team from the university, we have to build cars at very tight costs and must seek funding independently from companies that are generous to contribute to the development of our education-and-research-based car. If PCBWay were able to generously deigns to give donations in the form of PCB Manufacturing and PCB Assembly, we would be very grateful. These services will greatly assist the research of our team engineers and also contribute to the development of the team as a whole. In return for your kindness, we would be able to put your name and logo on our website, booklet, leaflet, banner, X-banner, and expose you to our followers on social media.Thank you for your consideration and any help you can provide. I look forward to hearing from you soon.

About Arjuna EV UGM:Arjuna EV UGM is a Formula SAE from the Gadjah Mada University planning to compete in Formula SAE Japan in the 2022 competition season. Formula SAE is an international competition for university students to develop a formula racecar and improve their engineer talents and skills. Arjuna EV UGM is a team of young and talented students building an electric vehicle racecar.Pre-charge Discharge Board:Based on FSAE Rules, FSAE electric vehicle Race Cars must have both a precharge resistor to charge the battery’s power to a certain percentage when it is connected to the motor controller and a discharge resistor to slowly reduce the power within the motor controller when the tractive system has been shut down. The precharge and discharge resistors are parts of the electric vehicle’s tractive system. The precharge resistor is used to slowly decrease the current flowing from the battery while increasing its power until the power reaches a certain percentage before being directly connected to the motor controller through the accumulator isolation relays, while the discharge resistor is used to slowly reduce the power of the electrical current within the motor controller when the tractive system is being shut down so that the motor controller, the boards within the tractive system, and the people near the tractive system don’t experience any damage.We realized that the previous generations of the Arjuna EV Team placed the precharge resistor and the discharge resistor on different boards. This year, our team has managed to design a new board containing a resistor that serves the function of both a precharge resistor and a discharge resistor. For the precharge mechanism, we use a Comparator (LM321) which is connected to an RC circuit and a MOSFET (IR9540N) to serve as a timer for the accumulator isolation relay (AIR+) so that the AIR would only connect the battery and the motor controller (emDrive 500) after the voltage and current of the electrical current reach the percentage that our team has decided upon, while the AIR is open the current from the battery will flow into the resistor and will begin to charge up, therefore making the resistor serve the function of a precharge resistor. For the discharge mechanism, we use two relays (G2RL-2-DC12) to disconnect the motor controller from the battery and connect the motor controller only to the resistor, this is done so that the resistor will begin to serve as a discharge resistor to slowly reduce the current and voltage of the electrical current flowing within the motor controller with the help of the capacitor placed within the motor controller.

Tractive System Active Light – Arjuna EV Gadjah Mada University About Arjuna EV UGM:Arjuna EV UGM is a Formula SAE from the Gadjah Mada University planning to compete in Formula SAE Japan in the 2022 competition season. Formula SAE is an international competition for university students to develop a formula racecar and improve their engineer talents and skills. Arjuna EV UGM is a team of young and talented students building an electric vehicle racecar.TSAL Board:TSAL Board or Tractive System Active Light is an indicator for electric vehicle car that indicate the tractive system is active in high voltage or active in low voltage or even it’s off. When the tractive system is active in the low voltage (less than 60 VDC based on FSAE rules 2022), TSAL will illuminate into green color. When the tractive system is active in the high voltage (higher than 60 VDC based on FSAE rules 2022), TSAL will illuminate in to blink__ red color with a frequency of 3 Hz. When there is no voltage in the tractive system, the TSAL will be off.We used two regulators to change the voltage into 12 VDC, the relay to change the color from green to red, and then we used a timer circuit (with IC NE555) to make the red led blink__ with a frequency of 3 Hz.

My name is Sandipratama, i'm a keyboardist who interest in music producing and tech.This PCB project called "DAKON" in javanese it's mean traditional children's game. In this project i build mechanical keyboard with ortholinier or grid layout as normal keyboard and midi controller software because with the grid layout it's much more convenient for making beat like 4x4 drumpad, MIDI CC sender, macro shortcut, or just ordinary keyboard with grid layout.This design decide because the popularity of mechanical keyboard enthusiast has been increased about few years ago. I using Arduino Promicro 32u4 in this project which is capable enough to handle what i need of course and programming flexibility with ArduinoIDE or QMKfirmware builder if it's just for programing keyboard. But nowdays most of mechanical keyboard enthusiast identified mechanical keyboard just a hardware with fancy features that can be modified with pricey parts like switch, case and keycaps just for their prestige without knowing the actual capability.This design used basic 4x12 matrix keyboard wiring, and my plan using ArduinoIDE as base programmer. At the first plan i want to add Hardware Serial port with TX pinout via 3.5mm audio jack for for external midi controller purpose but i run out arduino pinout, so i just add some fancy features like RGB underglow and piezo buzzer breakout.I also had prototype with similliar purpose but just mini version with so much features like MIDI OUT port, RGB led, potentiometer support and encoder support.Thx to PCBway this mini version has been realized and work so fine for midi controller purpose and macropad.Now it's the right time to expand the mini version with bigger one !So many thank's to PCBWay for supporting hobbyist all over the world !

About Arjuna EV UGM: Arjuna EV UGM is a Formula SAE from the Gadjah Mada University planning to compete in Formula SAE Japan in the 2022 competition season. Formula SAE is an international competition for university students to develop a formula race car and improve their engineer talents and skills. Arjuna EV UGM is a team of young and talented students building an electric vehicle race car.Powerstage Charging Board: Based on FSAE Rules, FSAE electric vehicle Race Car must have shut down the circuit to keep the car and driver safe from any malfunctions that happen in the car, especially on the Charging condition. Powerstage is part of the shutdown circuit and is used to process data in the form of voltage from several components of the cars, the components are Insulation Monitoring Device and Battery Management System. If Powerstage doesn’t detect any voltage from one of the components, Powerstage will detect it as an error condition for the car and shutdown the High Voltage system on the car. From the experience of previous generations, we realized that a device for detecting error components in our car does not exist, so we decided to design our new Powerstage Charging with a more suitable and efficient system. We Use Data Flip-Flop (D-Flip Flop IC 74HC74) in powerstage charging board to process our data equipped with IC NOT Gate (IC 74HC04), IC OR Gate (IC 74HC32), and IC Frequency Modulator (IC NE555) as pulse source for D-Flip Flop System. The output of this board is an Open-Closed relay that has a Normally-Open system that can open and close shutdown circuit according to FSAE Rules. Words to PCBWay: As a team from the university, we have to build cars at very tight costs and must seek funding independently from companies that are generous to contribute to the development of our education-and-research-based car. If PCBWay were able to generously deigns to give donations in the form of PCB Manufacturing and PCB Assembly, we would be very grateful. These services will greatly assist the research of our team engineers and also contribute to the development of the team as a whole. In return for your kindness, we would be able to put your name and logo on our website, booklet, leaflet, banner, X-banner, and expose you to our followers on social media. Thank you for your consideration and any help you can provide. I look forward to hearing from you soon.

Dear Sir, PCBWay is a website that provides the best PCB printing services. There are many positive reviews about PCBWay from users. These various positive reviews are proof that PCBWay is the best PCB printing service ever. PCBWay pays great attention to the quality and quantity of the PCBs they make. In addition, PCBs ordered will be processed immediately and shipped in just a few days. This is also what makes PCBWay the best PCB printing service. While reading some reviews on the internet about PCBWay we came across an article that said that PCBWay is ready to sponsor institutional projects, students, and even middle class students. After knowing this, we want to get sponsorship from PCBWay for our project We will take part in the ABU Indonesia Robot Contest which will be held on 23 – 26 August 2021. The ABU Indonesia Robot Contest is a contest adopted from the ABU Asia-Pacific Robot Contest International. The winner of the ABU Indonesia Robot Contest have a chance to represent Indonesia to compete in the ABU Asia-Pacific Robot Contest 2021 Jimo, China. The theme of the ABU Asia-Pacific Robot Contest is Throwing Arrows Into Pots In this competition, we have a better passion than in previous years. We are very optimistic and believe that we can win, that optimism is also not based on no reason, but the result of our months of preparation. We have also done several test on our robot project, and the result is very satisfying. In this paragraph we would like to describe a robot project that we are currently working on. We are very excited about our project because we have a great chance to win in the ABU Indonesia Robot Contest. As a team engaged in the robotics division, we are always active in various robotics competitions. Currently our team, which has the name Senggarang Robotik Club (SRC) is participating in the 2021 Abu Indonesia Robot Contest. This year the theme for the Indonesian Abu Robot Contest is Throwing Arrows Into Pots. We designed two (2) robots to enter the contest later. Arrowkid Robot and Throwing Robot. Arrowkid Robot will work as a robot taking arrows located on the floor and Throwing Robot will work as a robot throwing arrows to get into the pot. Arrowkid Robot is equipped with four (4) DC24V motors, one (1) pneumatic cylinder, PS2 Wireless joystick and one (1) stepper motor. The Throwing Robot is equipped with seven (7) 24V DC motors, two (2) pneumatic cylinders and a PS2 Wireless joystick. We will design two (2) robots but we only design one PCB. This one PCB we will use for our two robots. Thats it a description dan exposurer about our project. We think, we have describe with enough detail and we hope we can get support from PCBWay. Thanks for your attention. Regards, SRC Team

Temperature Board – Arjuna EV Gadjah Mada University About Arjuna EV UGM: Arjuna EV UGM is a Formula SAE from the Gadjah Mada University planning to compete in Formula SAE Japan in the 2022 competition season. Formula SAE is an international competition for university students to develop a formula racecar and improve their engineer talents and skills. Arjuna EV UGM is a team of young and talented students building electric vehicle racecar.Temperature Board: From the experience of previous generations, we realized that a device for detecting battery temperature that meets our needs does not exist. So we decided to design our temperature detection system according to the Formula SAE specifications. The system consists a set of a thermistor, which is negative temperature coefficient (NTC) that functions as a temperature sensor. The data distribution system uses a multiplexer which alternately sends data reading from the NTC to the microcontroller. This system is capable to handle 24 NTC that is measuring 48 battery cells and keep the battery cell safe from over temperature.

hello friend how are you,. my name is Tata Prasetyo from Indonesia, do you still remember me?this time I come back with a new experience, I am making a simple IOT project for remote control using a wifi network, based on the Arduino Atmega328 and the ESP8266 module, with the combination of the two boards I am thinking of controlling and monitoring electronic equipment in my home, cool right? hehe ... well here so as not to be too complicated I designed a pcb board in which there are already 6 relays in it, besides that I also provide several input pins for adding external sensors, so this board is perfect for beginners who want to know or learn IoT, I hope that with this you can develop it again ... thank you, hope it is useful :)note: this board is remotely with an android phone, more complete information please contact me..PCB SMART RELAY- 6CHSMART PHONE REMOTE 6xBUTTON ON/OFF WITH INDICATOR LED AND TEXT DISPLAY

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.

by:T.TECHhello our friends meet again, on this occasion I will introduce a simple tool that is quite interesting for audio amplifier hobbyists, namely a digital VU meter that uses a 16x2 LCD display, a little story, initially I assembled a loudspeaker (power amplifier) ​​and there I need an indicator to make it easier for me to monitor a sound signal that enters a power amplifier that I assembled earlier, generally using a led and that is common to me, then I thought how to make it look a little more interesting compared to using a led? after that I came up with an idea how to make a VU meter using a 16x2 lcd? I think it's more interesting. Hehe then I looked for references on google about VU meter using a 16x2 lcd screen, okay after searching on google I found an interesting site about what I needed, after that I studied it then I understood a little and I started composing the tools, for testing I use a hole board for component placement, what components are needed? The following is a list of the components I use: perforated board, 16x2 lcd, atmega328 ic, resistor,ic 78L05,capacitor, diode. Note: for software I use arduinoIDE because basically I use arduino / atmega328p, okay at the last stage I tried to turn on the tool I assembled earlier and the results are very satisfying, I am very happy because what I hope can be achieved, hopefully this is useful for friends, thank you ...the image below is an example of my circuit ..

12-24 VDC 10A Battery charger with PSU & Solar PanelI'm an Electronics Designer from PT. Daun Biru Engineering. This project is prototype of our module called "PM Kapal v4". The previous version can only charge a 12V battery although it's voltage max. at 24V. Beside that it can only charge with 1 source, regular power supply. It just can handle max. 1A current to charge the battery.In this newer V4 we decide to replace all the relay with MOSFET, so It gain flexibility to charge a 12V or 24V battery at max. 10A current. This module also has dual power source: PSU and Solar Panel. We also add button and LCD, so we can monitor the power and calibrate the module. This automatically detect if the power source is plugged in or not, then immediately show the value of the voltage source.Core: STM32F103C8Battery: 12V-24VPSU: 15V-30VDCSolar Panel: min. 20WPLoad: based on batteryInterface: LCD and buttonMain feature: Voltage and current monitoringIf this prototype is successful. We will make the official embedded IoT module version of "PM Kapal v4" with additional interfaces: Modbus and Ethernet.

PREVIEW The tool to be designed is in the form of attendance system multi-node with a centralized database, that is, there are many devices as data retrieval points but with centralized storage and management and monitoring from one device only. The system to be designed consists of 3 components, namely Local MQTT Server, Monitor and Database Client, and Node Client on a local network or communication without going through an ISP or external network. Local MQTT Server to function as a server MQTT used between the Client for MQTT communication or place where the function "publish" and "subscribe" to be processed and regulated by the Server MQTT. Monitor and Database Client functions to monitor each Node Client connected to the same MQTT server and record and manage data checking for each node and employee on the database. On client side this will also run GUI application that has been designed with PyQt5 to establish functions monitor and as a bridge with database. Client node has the main function as an attendance point. Client nodes cannot operate if Client Monitor and Database are not running even though Client Nodes are connected to the server. Optional function is as a door locking system as well as reading the condition of the door open or closed. These two functions will also be monitored by the Client Monitor and Database. To support these two functions the user can choose whether to use the mode to open the door (by default) or use attendance mode. In open door mode, will not be carried out data updates to the database, but only the authentication process will occur. As for the attendance system, the data will be updated to the database and recorded based on a 2-time pattern, namely coming and going home per day for each user. The controller part Node Client will be installed indoors, while the interface and scanner part will be outside. This is to support the function of the Node Client as a security system for a room. But most importantly the client node must be able to reach the access point nearest. To make it easier to understand and realize the system, several block diagrams will be made including the hardware block diagram (Figure 1) and the communication system tool (Figure 2).Figure 1. Hardware Block DiagramFigure 2. Communication System Block DiagramAttendance Node MachineHardware: ESP8266 Wemos D1 Mini - Software: Arduino C/C++Feature and library used: Dual Mode: Tap to Unlock Door and Attendance Mode Scheduler.h (Multitask) from Here PubSubClient.h (MQTT protocol client) LiquidCrystal_I2C.h (LCD16x2 I2C) MFRC522.h (RFID SPI module 13.56MHz) ArduinoOTA.h (wireless/no-usb programming) Reed/magnetic sensor for Door state solenoid door lock port max. 12V/1A (12W) 5V/3A (15W) power supply inputRecommended ESP8266 Wemos D1 Mini Arduino Configuration:Mechanic Documentation Photo:Acrylic Case for LCD, RFID sensor, button, and buzzer. Install it outside the room. Acrylic case for controller part, reed/magnet sensor and solenoid port. Install it inside the room. Solenoid port and small hole for reed/magnet sensor wire GUI (Node Monitor & Employee Manager)Tested on Windows 10 PC and Ubuntu Mate 18.04 64bit on Raspberry Pi 3 (Should be supported with Ubuntu 64bit on PC)Main file: "SCAN_node_monitor.py" ("karyawan.py", "icons", and "images" need to be in the same folder)Feature: Manage & monitor all Node Machine that connected to the same MQTT server. Using MongoDB database for Node & Employee Manager. Unlock door on every Node Machine remotely.Python 3.7 module/library used: Pyqt5 (for GUI) PyMongo (for MongoDB Database driver) Paho-Mqtt (MQTT client) Threading (Multitasking using Multithreading, 1 thread per 1 Attendance Node Machine)

by:T.TECHhello friend, my name is Tata Prasetyo from Indonesia, I am back again with a new project that may be my project can help you to simplify your learning in the microcontroller field, and this is from my personal experience that may have happened to you too, a little story from me: first I learned a microcontroller using an Arduino Uno board with a DIP type ic, after a long time later I had learned how it works then I thought about making my own version of the board for anyone to develop, this time I will use the SMD type ATmega328 ic , but after I thought it would be troublesome for the user, how do I enter the program on the IC using the program file download tool? well, therefore I made a board for the ATmega328 / 8 IC type SMD to DIP, with this board I hope and other users it will be easier to enter the program into the SMD ic using the downloader tool, or you can also add the usual jumper cables Generally used for studying, because the board already uses a male pin header, ... okay that's all from me, hope it will be useful for friends, thank you :)

Hello friend, i am from indonesia, ok after a long time i did not share the project, this time i am back again with my new project, introduce my new project which is about a board to learn microcontroller programming which i named IJO-BOT , now the component on a board that I made is mainly a microcontroller ic from the ATMEL manufacturer, namely ATMEGA128, why do I use the Atmega128 chip? because I give a little space to users to be broader to develop their project in terms of more GPIO pins, this is my own experience, I used to learn to use the clone version of the Arduino Uno board just to learn, after a long time later I began to understand how the board works Then I developed a number of small projects to become big, now I started to feel that there was something missing from the Arduino board that used the Atmega328 chip, the drawback was in the GPIO pin section, at that time I was working on projects that required a lot of GPIO pins, so that's why I think how to deal with this problem? I searched for info on google and finally I found a solution, actually there are many solutions to add pins to the Arduino board by adding an external support ic, but I decided to make my own board that has more GPIO pins than the Arduino board, and in my opinion it will be easier I and other users in developing the project, ohh yes, the board that I made also supports programming using the ArduinoIDE application by adding a MEGAcore board which can be downloaded on Google, the following is my sponsor, I hope it will be useful for friends, .. thank you

old device: SENTINEL mark I: PSIONICPreview Line Follower robot competitions are very often held between students and hobbies. Apart from being the basic material for learning in electronics and microcontroller programming, this type of robot is in great demand because of its cool shape like F1 or also a tamiya toy. This robot can be adjusted through the keypad interface and 128x64 LCD ranging from calibration, algorithms, and other functions. Arduino compatible based on Maple Mini board (STM32F103CBT6)Burn and update firmware via USB-OTGBTS7960 motor driver 2 port + encoderOLED I2C SSD1306 128x64external EEPROM (24LC256)2 port for mini servo 5V1 port for extinguisher motor (adjustable voltage using PWM)external serial port (Serial1) SENTINEL mark II: QUEST. This robot is a development of the previous version, the SENTINEL mark I: PSIONIC (on cover photo). Here I will include a video documentation of the previous version, namely SENTINEL mark I:Following are the full specifications of the latest version of the SENTINEL mark II: QUEST:For full Schematic and Gerber you can grab them here.The part list and OS (Arduino source code) will be uploaded soon on my githubCore + Motor DriverPower SupplyInput : LiPo 3 cell 12.6V12V : Main motor (left and right) and extinguisher5V : Servo motor3.3V : STM32, EEPROM, LCD, sensorCoreMain controller : STM32F103CBT6USB-OTG : burn bootloader, robot OS upgrade (firmware)External Serial1 port : burn bootloader, Bluetooth, WiFi, etc.Servo port : gripper (for transporter mode)BOOT jumper :BOOT Configuration Mode to System Memory (burn bootloader) or Flash Memory (bootloader / OS upgrade)Battery voltage sensorMotor driverMain motor : 12V DC motor right and left (+ additional encoder pin) Extinguisher : for "Fire Fighter" mode, the voltage can be adjusted by PWM (configuration menu)LCD + EEPROM + ButtonLCD : I2C OLED 128x64EEPROM : 24LC256SMD push buttonSensor14 multiplexed sensors (7 left and 7 right)Adjustable LED brightness (configuration menu)FULL

Hi friend, we are from Cikarang Teknologi from Indonesia, we have made pcb layout to control home electronics using internet. we use the wemos d1 mini as the main control.below is the pcb layout.for smd component we use smd 1206 resistor and diode.friends can also use the plc box enclosure.for programming you can see on the internet, for example:I / O information:D1 <==> RL1D2 <==> RL2D3 <==> RL3D4 <==> RL4D5 <==> RL5D6 <==> RL6D7 <==> RL7D8 <==> RL8