Team Kratos Racing is the Formula Student Team from Pimpri Chinchwad College of Engineering, Pune. We design, manufacture, and test an Electric Formula-Student Racecar, and actively participate in SAE and Formula Student events held internationally.Participation and Laurels:Since the inception of the team in 2015, it is growing each year as a team and performing better than the preceding year. To date, the team has designed and manufactured 8 cars that gained 40 awards across 9 competitions and have been the most successful team in India. After competing in the C.V category for 3 years, the team shifted to greener mobility and took a big step forward in designing the 1st Electric Vehicle and were regarded as the Overall Champions in the Electric Category of Formula Bharat 2019. In 2020, the Team again set a record of developing India's First Full Carbon Fibre Monocoque Chassis. In 2021, the Team participated in Formula Bharat 2021 Virtuals and was declared the overall champion of the event, with a special award of Best Battery Pack Design.Previous Project:Last year, the Team designed its Third Electric Racecar Prototype - Thunderblade 3.0 and competed in Formula Bharat Electric Virtuals 2021.The Power train specifications of last year project were:Maximum Tractive-system voltage: 470.4VDCNominal Tractive-system voltage: 414.4VDCControl-system voltage: 15VDCAccumulator configuration: 112s2pTotal Accumulator capacity: 28.44MJMotor type: Permanent Magnet Synchronous MotorNumber of motors: 1, Rear wheel driveMaximum combined motor power in kW: 68kWCurrent Project:Currently, the team is working on the manufacturing of Thunderblade 2.1. The objectives of Thunderblade 2.1 are to take a step towards integration of microcontroller in the ECU of the Vehicle and acquiring real-time data from the vehicle.Prototyping:After designing the GLVS (Ground low voltage system), various prototypes of circuits were tested in the college itself.After multiple iterations of circuits, the prototypes were manufactured:To PCBWay:It would be really grateful for us to partner with PCBWay. Since the very beginning, the team has been consistently delivering and learning from the failures to move forward. After competing in our nation for the past 6 years, the team has decided to participate in international competitions with teams across the globe. For this vision, Team Kratos Racing would request PCBWay for their extensive support in PCB manufacturing. We would request PCBWay to consider our request and be a vital pillar in our journey.#TOGETHERWERISE.

Hello everyoneWe're a team of engineering students at the Faculty of Engineering, Alexandria University, Egypt.We call ourselves "Aquaphoton Academy".Our goal is to annually build a new remotely operated underwater vehicle, with improvements over the previous years, in order to participate in the MATE ROV competition.The goal of the competition is to simulate ROVs that perform underwater missions that could endanger the lives of human divers, or be impossible to human divers altogether.With the help of our mentors and the endless support of PCBWay, our electrical system always turns out to be impeccable! Attached are 3D models of our boards.

This is a DIY handheld gamepad, made using ESP32 microcontroller. You might have seen such game controllers before. But most of them use Arduino. Or more specifically Arduino pro micro or Leonardo board. Because these boards support HID, or human interface devices over USB. but esp32 doesn’t have such feature. So how do we do it? Well, esp32 does have BLE, or Bluetooth low energy, which we can use to communicate wirelessly, over Bluetooth.So we have ESP32 module, as the central controller, then we have the USB type-C port, and a 3.3v regulator to convert 5v to 3.3v. Then we have the programming circuit, using ch340c usb to serial converter with auto programming mode and auto reset circuitry using duel transistors. We also have a battery charging circuit, along with overcharge, and over discharge protection. Which then boost up to 5v, using the boost converter ic. Next we have the joysticks, D-Pad buttons, trigger buttons, Neopixel LEDs, i2c port. And finally a 3way switch, to toggle between USB power and battery power.The gamepad has2 analog joysticks2 trigger buttons2 D-Pads6 addressable RGB LEDsand a i2c portIt can run using 2 18650 Li ion cells, which can be changed using the USB type-C port. And it can also be used to program the microcontroller. The design is inspired by the new ps5 controller, to give it a better look. The GPIO4 is connected to the battery using a voltage divider. So that we can measure the battery voltage. the NeoPixel LEDs will indicates if the controller is connected to a device or battery voltage is low.The code is based on BLE Gamepad library by lemmingDev. In the code I have defined all the GPIO pins for different inputs. Then in the setup there are some initial led animations. And as soon as the board is connected to the device, all LEDs will turn Green. And it will check battery voltage, in a time interval, which is defined earlier. Then we get the button states, and set the gamepad buttons accordingly. Then we take the analog inputs, and map it to suitable values. And finally set the axis according to the values we received. After uploading the code open Bluetooth menu on your Smartphone or PC and you will see a new device pops up. click on that to connect it and you are ready to play.

The TeamSince the 1980's, our team has been operating at various levels, being used as a training ground to create wonderful engineers. In 2016, a joint project between two University teams, our FSAE team, as well as the Electric Vehicle Team set out to create an EV chassis for the growing electric category for FSAE. Since then, we have been able to complete one chassis, retired it, and are now designing and manufacturing another with the lessons learned from it. Our target for this season is to finish, test, and compete this new design, using all that we have learned since the previous car's retirement.The CarThe car is a small formula type vehicle, open canopy, open wheel. For the size, it's quite powerful as well, sporting a powertrain that's capable of outputting ~100kW (limited to 80kW for the competitions we compete in) to the rear of the car. This is powered from a 400V, 9kWh battery.The ElectronicsDue to the very custom environment that we are having to work in, as well as having to rely on custom components to save cost, the vast majority of our electronics is custom. There's currently only four components that we don't make, two of which we get at a major discount specifically for the competition, and two of which we currently do not have the time and experience to design ourselves. The rest we however do design ourselves. This includes all of our data acquisition needs. Here's a short list of some of the circuits we have designed:VCUThe Vehicle Control Unit (VCU) is our main hub for data on the car. Driver controls feed into this circuit to be distributed elsewhere in the car as digital data. As noted various nodes of analog inputs and outputs feeds into the VCU to monitor various ontrols and some specific sensing points on the car. It also have several digital outputs, most of which are CAN, to interface with other microcontrollers all over the car. There is also a major safety circuit to shutdown the car automatically if there is anything wrong, and ensure proper startup, which passes through the VCU.Fan ControllerWe needed a custom fan Controller that not only could provide power to 12 fans as a fan hub to cool the 576 battery cells in our accumulator, as well as needed to be able to control all 12 fans individually, but it needed to be able to tap into an already existing CANBus. Thus, our custom fan controller was created to do all of such, while be small enough to fit the form factor that we needed. In addition, included is an STM32 microcontroller to feed the fan controller IC's with an algorithm that will allow us to intelligently cool the batteries in such a way that we can keep the batteries at the optimal temperature as well as spin up and down the fans, saving power in both areas.2 Stage DC/DCWe needed to implement a 2 Stage DC/DC module on our car for two reaShot sons:We needed to have the ability to have both 12 and 24V power. 12V is our main Grounded Low Voltage (GLV) and the vast majority of the circuits on our car uses it. However, our water pump to cool both our motor and inverter is a 24V pump, and thus we needed to have a 24V power delivery system, in which we decided would be through the DC/DC moduleWe undersized our GLV battery to save weight, but to recharge it, we needed to funnel power from our main battery pack into it. Thus, we have a specific connector on the DC/DC module to connect to it to recharge the battery.Support from PCBWay on this project would be such a major help. For one, a lot of other PCB Fabricators do not have nearly the amount of options that PCBWay has, and as such, getting access to these options would allow us a lot more flexibility on what kind of boards we could possibly make (adding a metal core to our DC/DC module for even better thermal cooling for instance). On top of this, PCBWay seems to be class leading in lead times even more more simple topologies like basic 4 layer boards. This will mean that we can very quickly prototype boards, something important to us, as time is a premium, scarce resource for this team. Being able to have quick turnaround times on prototypes will not only help us on building out our next EV, but also be able to test our running combustion cars with new data acquisition systems.Shot of one of our drivers driving the latest Combustion car at a competition in PittsburgFeel free to contact us at ksumotorsport@gmail.com or dspicer1@students.kennesaw.edu for any questions. Also, follow us on instagram @kennesawmotorsports

The Candy Machine is smart Skittles (or other candy) dispensor.It's a project we decided to do for school, but we wanted to do something we also could use at home and share with others. With this project we want to increas our skills in every accent.On the display you could set the amount of candy you want and with the rfid card you can pay your candy.After sucessful payment the candy is falling out.In the new version 2.0 we want to fix some bugs from the first version. In addition we want to add some new features which are the following:WiFi ConnectionUsermanegement on the cloudNew payment methods like google pay / apple pay usw.New display with a better guiNew cpu with more processing powerThis video shows our first version and how it works: https://www.youtube.com/watch?v=MM5qW0tC1BI

IntroductionLedBox V2 is a fully contained, sound reactive, ESP32 based module for controlling 5-12V addressable LED strips (WS2812, SK6812, etc.), supporting both 3-(VDD,DAT,GND) and 4-(VDD,DAT,CLK,GND) pin configuration.The module has a dedicated step-down converter, digital MEMS microphone, side button, 32kHz IR receiver, 10A safety resettable fuse, 1000µF buffer capacitor, 3.3V/5V level converter for both Data and Clock lines, together with an impedance matching resistor.These features ensure maximum functionality, safety, and led strip compatibility, all in a small (54x32x18mm) 3D printable enclosure.It is fully compatible with WLED and sound reactive WLED fork.SpecificationThe 5.5x2.1mm, center-positive DC barrel jack allows MAX 17V input voltage (VDD_IN), determined by TPS62163DSG step-down converter. However, since VDD_IN is directly connected to LED strip's power supply (VDD) through a resettable fuse (PPTC), be very careful, and connect only voltage that is rated for your LED strip (usually 5V or 12V). Also, make sure that the power capabilities of your supply meets (or preferable exceeds) the expected power requirement of the LED strip.The LED strip is connected through a safety resettable fuse (PPTC) which will trip if the current draw exceeds 10A. This feature can be bypassed by closing the JP2 solder bridge on the back side of the board, but it is not recommended due to safety reasons. The main function of the fuse is to protect the module in scenarios like short circuit on the strip side. I strongly advise against running the module close to 10A. Keep in mind that even the JST SM connector, that addressable LED strips use, is officially rated only for max 3A. If you really need to power strips with higher current consumption, a safer way is to branch out the power line (VDD, GND) before the module using thicker cables, and connect them directly to the strip (power injection).When using long strips, you might experience a color shift towards the end, due to the voltage drop caused by strip's resistance.This can be solved by injecting power to the strip repeatedly every few meters (e.g. every 5m for WS2812 or every 2.5m for WS2813, SK9822, SK6812).Always make sure that you know and understand what you are doing, especially when dealing with large current. You are doing this at your own risk.edBox comes with a standard 3-wire JST SM connector soldered on VDD, DAT, and GND, for seamless connection of 3-pin addressable LED strips. To use 4-wire strips, additional CLK pin can be easily soldered. DAT has a 470Ω series resistor, and both DAT and CLK are bi-directionally level-shifted from 3.3V to 5V by TXS0102DCU, to meet recommended operating conditions for most strips.Layout

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 !

Who We Are We are a group of engineers designing Satellites for a very popular international competition TEKNOFEST for 2 years. We are one of the everyone's favourite team in the competition and representing Karadeniz Technical University. You can see our work in LinkedIn page. System Concept Our satellite designed to take launch in a rocket to be separated in any king of atmosphere of a planet that is investigated. The system after separation, will descend at constant speed (12 m/s) using its versatile parachute in protective shield (satellite capsule) and at predetermined altitude, the payload will also be separated from its protective capsule (container). After that, it runs the brushless engines for smooth descending and during that, it samples various scientific datas (21) from the target planet's atmosphere.Below there, you can see our whole design for competition: It has several brushless motorts to descend slowly from the altitude separated from a mid-range rocket. Our satellite has a barometer to measure altitude and temperature, a GNSS system for location, IMU sensor for inertial measurement, live-video stream capability for recording the surface of the target planet and long range communication module for telemetry transfer.Satellite Control Hardware To prove our engineering concepts and solution aspects, our team needs an evaluation board. We have designed an evaluation board before our main "Satellite Control Hardware", under PCBWay sponsorsip. The picture below illustrates us our test PCB : The evaluation board is consists of all Through-Hole components. It will be very flexible to replacing the components in case of any failure. So that, our embedded developers will be able to work on the complete board without worrying about burning them. HürSAT Satellite Team again thanks very much PCBWay for supporting our project. Here below our main Satellite Control Hardware is on the production lines of PCBWay for SMD version of the evaluation board which will take much longer time to deliver.Satellite Hardware Specs:240MHz dual-core MCU (32-bit)8mb SRAM capacity802.11.b/g/n WiFi capabilityBluetooth interface capabilityUSB interfaceMicro SD Card interface (SPI)GNSS module with hot-startAdvanced IMU sensor (4ms latency)High accuracy barometer for altitude measurements14-bit 4 channel ADC4 channel PWM output terminalsServo motor control terminal5A load switch circuit driven by D-Latch3.3VDC and 5VDC outputsBuzzer for human interfaceHere are the GERBER files of the project. So, everyone can reach and build what we have done! Enjoygithub link

About the projectI'm studying a master's in electronic instrumentation. In this covid period, we work on a prototype to solve a new contingency in a course of my university (Universidad Nacional Autonoma de Méxco). This prototype for the first time was thinking to joint art and technology and experiment with this area, however, the development of the project will be used to study a relation between the pollution (PM and CO2) on air and the health of the people.Problem: Deterioration of air quality due to the industrial/social process because of the constant demand for the creation of products and services.Response to the problem: The human being is visualized as a mobile being that interacts with an environment that can be toxic or beneficial to his health. In such a way that the human being is seen as a mobile "sensor" that can map the health of a city in relation to pollution (PM particles and/or CO2/CO concentration) in the air.While qualitatively one can feel tired, say that the air is heavy or visualize a cloud of smog in the distance that does not allow to observe the volcanoes near the CDMX, Mexico, the use of a monitor that transforms these expressions to a quantitative form of what we are experiencing in our daily activities in the streets of the city.Thus, a portable air quality monitor that registers the air quality in the zones that an individual travels through in a daily day is a preliminary idea. - Technical: Numerical and analytical visualization of the data as a record of air quality in city halls/colonies. This can be a history of how much the city is degrading or how much the city is improving in a given period. Prototype on printed model3D Model, Top View3D Model, Bottom View-Artistic: Due to the constant rain of data to which we are exposed, many times the numbers are just scribbles on screens which simply move with the movement of a finger. In such a way that to visualize the air quality records we think of a structure like a small heart that has movement and color, both determined by the levels that the mobile being detects, i.e., polluted air means a slow movement or a dark color because the oxygenation of the blood is not done properly (TDB/TBC). This piece is also thought of as a response to "imagining new displays", that is, we always think of screens as a means of visualization for human beings, however, the use of a mobile object that changes color or accelerates or decreases its movement would allow someone to see the effect that in this case the air has on our body.3D model printed

This compact (80mm x 40mm) platform is designed to allow researchers experiment with various 5.8GHz radar designs. All components necessary for a radar frontend are included in this platform, only requiring an external computer and measuring equipment to be supplied separately. These features along with the modularity of the design create the perfect platform for anyone interested in radar concepts. OverviewThe system includes following RF components and respective functionalities:ADF4159 PLL with 1.23MHz loop filter provides frequency ramping/modulation in sawtooth, triangle, or FSK formats within the 5.8GHz license-free ISM band.ADL5375 IQ Modulator provides phase/amplitude modulation.AD9106 DAC/DDS provides waveform generation for aforementioned modulator on both I/Q channels.HMC951A IQ Downconverter allows for analysis of received radar signals.RFSW6024 RF Switch provides selection of either the unmodulated carrier frequency generated by the PLL or the sampled modulated transmitted signal to be fed into the LO input of the aforementioned downconverter. Other features include:Built in Tx and Rx microstrip patch antennas with inline SW23 RF switches/probes for bypassing to external antennas.Intermediate Frequency outputs from the receiver subsection is accessible through MHF4LK mini lockable RF output connectors.Cortex M0+ Microcontroller for digital control of PLL, DAC, and RF bypass switch. Accessible through USB C interface.Wide 12-20V input voltage range with input protections.M2 mounting holes. These features are to be built onto a high-frequency PCB material using RF-design techniques.(photo of revision 1 design without microcontroller and USB C input) About MeI am a secondary student at Middleton High with interests in electrical engineering, specifically RF/Microwave. I hope that with the design of this system, I can help not only myself but others conduct research on radar modulation techniques at a low cost.Further Details For more information including schematic design files, BOM, and PLL simulation files can be found on the GitHub: https://github.com/RaccoonWireless/WaveyRadar

The concept of internet has been accepted since the day it entered human life, but with the technological developments experienced, it has emerged as the internet IoT concept. IoT, which has gained popularity in recent years and is preferred by distinguished researchers.IoT encompasses everything connected to the internet. It is used to describe objects that interact with each other. In simple terms, the Internet of Things (IoT) refers to the tendency to connect all kinds of physical objects to the Internet. The Internet of Things is used in everything from common household appliances such as refrigerators and light bulbs to medical and wearable devices and even smart cities. Specifically, IoT is a system of physical devices that receive and transmit data over wireless networks without human intervention. This is possible by integrating computing devices into objects with the help of sensors.In this project, a system that can be monitored from outside has been created.For example, you are engaged in agriculture.There will be water pump or electrical components that you need to control remotely.These components have been stabilized by using Esp-12 in order to be a system that can be monitored and intervened remotely.Endless thanks to PCBway for their unwavering support as always.

I am Sedat a undergraduate electric-electronic engineer student. I recently started RC Airplane hobby and I purpose develop myself in this hobby step by step in systematic manner. Therefore, I ask PCBWay for sponsorship my BLDC & Servo Motor Tester project at very early stage of my hobby as it can be seen by simplicity of my project.One week ago I needed a PWM signal generator to test my new BLDC motor. My aim was to measure thrust data of my motor at different duty cycle values of PWM signal. I made a market search and I found very common servo and BLDC tester which has a potentiometer, input and output ports structure. As my aim was to measure thrust data at different duty cycles, I should know exactly at which duty cycle I am at. However, the products that I found in market does not contain any display. For this reason, I designed a circuit which includes a Arduino Nano, a 16x2 LCD display, 2 potentiometer (one for adjusting duty cycle and the other for LCD contrast setting). Then, I implemented circuit on a stripboard and I verifed it with tests. Right now, I want to conclude this BLDC and Servo Tester project by replacing stripboard with professional PCB because PCB will avoid loose cable contacts and other possible failure reasons when testing motor. Also, replacing stripboard with PCB will gain better and finished project appearence to circuit.I always see sponsorships of PCBWay with my favorite youtube channels on different countries from all around world and I hope PCBWay might be sponsor my project too generously.Best wishes,Sedat

FESB Racing is a group of enthusiastic students dedicated to designing and building Formula Student race cars and MotoStudent race bikes. Goal of our association is to enrich students' knowledge through teamwork and professional work. As majority of our vehicles' components are designed in house, it is necessary to ensure that all our systems are properly supplied, monitored and safe from any unusual activities . This is why we decided to design our own Power Distribution Module. Power Distribution Module or PDM is a complex PCB board that replaces both fuses and relays and supplies all our devices in racing car with power. It is, so far, our biggest embedded hardware project.As already mentioned, PDM supplies voltage to all devices found in racing car. Not all devices operate at same voltage levels, therefore it was necessary to provide different voltage levels that will be needed in vehicle. There are several voltage regulators - buck converters, boost converters and linear converters for each loaded device to ensure required voltage is supplied to the device. With proper application of each we have 24V, 12V, 7V and 5V outputs. This covers all voltage ranges for other devices.Instead of using numerous fuses and relays, PDM is designed to control all systems with the use of smart switches that act as a replacement for all these fuses and relays. Smart switches measure current in every moment and based on default parameters turns the load ON/OFF. Along with current, PDM also has voltage and temperature monitoring. Biggest advantage of having smart switches is not having to change relays and fuses, but to simply detect problem and to rectify the fault. Major advantage is also self repair during driving. Instead of blown up fuses which would disqulify the car from the competition, PDM simply restarts and allows car to continue racing if the load is still undamaged.PDM is based around STM32 series of microconntrollers. Default parameters are programmed based on the load's specs and are important part of PDM functioning system. Measured values are compared to these parameters and if fault is present, channel turns OFF. Some of the faults are overcurrent, short circuit, short to VCC, overtemperature, overvoltage, undervoltage. All data is shown on our custom made display with a warning if FLT is present. The entire PCB is designed so that it complies with automotive power supply protection. To send and receive data, PDM has integrated CAN and connects to network to communicate with other devices in same network.

The Team SwarmUS is a team of nine engineering students from the University of Sherbrooke at the end of their bachelor diploma whose graduation is scheduled for December 2021. SwarmUS has multidisciplinary expertise in engineering, since its members come from computer, electrical and robotics engineering.The Project The project aims to establish an open software and hardware platform (respectively Hivemind and Hiveboard) allowing the implementation of a robotic swarm doing simultaneous localization and mapping (SLAM)[1] from heterogeneous robots and Android smartphones. Android phones can be used as an augmented reality interface to view the shared map produced and as a control interface for the robotic swarm. This technological breakthrough is taking place during a major engineering design project and will be presented at the MegaGÉNIALE Expo 2021. The project is academic in nature and will be used by a client at 3IT[2] in the robotics research group IntRoLab[3].What is the MégaGÉNIALE Expo? The MégaGÉNIALE Expo is the largest exhibition of university engineering projects in Canada. It is a unique opportunity to come and discover the work of graduates in each of the fields of engineering, namely: building, civil, chemical, biotechnology, electrical, computer, mechanical and robotics. The event attracts approximately 4,000 people annually. For more information on the event and photos of the event from previous years, visit the following page: https://www.MégaGÉNIALEe.usherbrooke.ca/.[1] https://en.wikipedia.org/wiki/Simultaneous_localization_and_mapping[2] https://www.usherbrooke.ca/3it/en/[3] https://introlab.3it.usherbrooke.ca/mediawiki-introlab/index.php/Main_Page (French only)Robotics sectionPioneer 2DX robotsThe SwarmUS team was given the task to update two old Pioneer 2DX that was unused from its client’s lab (IntRoLab). These robots will not only be given back to the client, but they will also serve as bench tests to test our swarm platform. Since the electronics and the software of these robots were obsolete, a full upgrade of this robot was needed and only the chasiss and the motors were kept.PowerThe robots are powered by a 12V GOOLOO GP37-Plus LiPo battery. Theses batteries have some internal protections and an integrated charger, thus simplifying the design around the robot’s power source. However, an additional under voltage protection was needed to prevent the robot from draining the battery below the voltage limit of the LiPo cells. Under voltage lockout boardA custom PCB that contains an under-voltage lockout (UVLO) and a voltage monitoring circuits was then designed by the team. This solution emits a high pitch sound whenever the voltage drops below a selected threshold and opens the main power relay under another lower threshold. Power distributionThe power tree is divided in 3 main parts: the 12V main power, the 12V motors’ power and the 5V computer’s power. A main relay controlled by a toggle switch and the UVLO board connects the battery to the 12V main power which, in return, gives power to a 5V@5A regulator and to another relay that controls the motors’ power. The motors’ relay is controlled by a red mushroom button to easily cut off the 12V power to the motors in an emergency case. The 5V regulator powers the main computer and all the robot sensors. Sensors, computer and motor controllerThe robot brain is a Raspberry Pi 4 4GB that runs on Linux 20.04.1 LTS. To sense its environment, the robot is equipped with a RPLidar A2M8 to visualize obstacles all around it and is equipped with a Realsense D435i or a Realsense D455, depending on the robot, to have visual and depth information of the scene afront of it. In addition to the sensors, a RoboClaw 2x60A from BasicMicro is used as the motor controller since it has built-in protections, PID controls and quadrature encoder reading features. The motor controller and all the sensors are connected to the Rasberry Pi via USB. Furthermore, the Hiveboard and the BeeBoards are integrated into the robot and are connected though Ethernet to the Raspberry Pi to give the robots the necessary hardware to join a swarm.Mechanical modificationsThe electronic components and the computer are maintained by wooden plates built with laser cutting technology to have the perfect fit in the narrow interior of the robot. The sensors’ supports and side panels of the robot were 3D printed to give us more flexibility in the design process.Robot’s softwareThe Raspberry Pi runs all the robot’s software inside the ROS (Robot Operating System) middleware. With the help of sensors, a navigation stack and RTAB-Map, the robot can move in its environment while mapping it and localizing itself in it. Additional ROS packages were made by the team to connect the ROS environment to the HiveMind running on the HiveBoard to let the swarm behaviors control the robot.Map produced by one of our robot The Hardware sectionThe following section will present in detail the 3 PCBs of the SwarmUS project:· The HiveSight: Test platfrom for the Decawave Ultra-Wide Band (UWB) integrated circuit (IC) the DW1000· The Hiveboard : The central board of the last iteration· The BeeBoard : The UWB ‘’sensor’’The HiveSightAs mentioned, the HiveSight was a test platform for the team. It confirmed that the team could do a functioning PCB (from design to testing) with the facilities we had access to. It was also a test platform for the UWB technology. Let us go over the board:Protection: function as an over-voltage, over-current and polarity inversionUSB: The USB IC opens a COM port for debugging purpose. It is connected to the u-USB port3V3&1V8 Gen: On board 3v3 and 1v8 power rail generation. The 1.8V comes from the 3.3V rail. All the components on the board are using the 3.3V rail. Only the Decawave IC DW1000 is using the 1.8V power rail. IMU: Inertial measurement unitWROOM reset: Physical button of the ESP32-WROOM (which is on the bottom side of the PCB) The ESP32-WROOM is a Wi-Fi IC.Flash 32k: 32 Kb flash memory. Used by our custom solution of the ESP32.ESP32: custom implementation of the ESP32 (Wi-Fi IC). This implementation was used to make a comparison between our custom implementation and the WROOM IC.CLK Gen: Generate the 38.4MHz clock for the DW1000s. Also includes an synchronisation signal for both the DW1000.DW1000: Ultra-wide Band IC. Used to localize other HiveSight in distance and angle. Each DW100 has 4 LEDs for debugging purpose.Our implementation of the DW1000s is based off the white papers published by decawave (https://www.decawave.com/application-notes/) and is being tested by our team as I write theses lines. However, we did manage to catch some errors in our design.The 5V power rail can come from 2 different places: · From the green connector at the top left· From the u-USB connectorFurthermore, the 3.3V source can come from the 3V3 rail or be supplied by the Nucleo. The Hivesight can also supply 5V or 3.3V to a Nucleo. However, when testing our design, we noticed that when the Nucleo supplied the 3V3 voltage to the HveSight, it was flashing an over-current warning. We recommend using a separate (as in the green connector/u-USB connector) power supply for the HiveSight.The SPI communication between the HiveSight and the Nucleo is a bit deficient, as we did not treat the SPI lines correctly while routing (too much top to bottom changes) and the ground loop is not the smallest possible. We did not connect the ground of every connector of the HiveSight correctly which is slowing the SPI bus. The maximum speed of the bus we could do was 1Mbit/s of data.The USB line to the COM port IC has switched plus and minus data lines, resulting in an error in the COM port. We recommend to either change the design or putting the data line in the correct order by removing the ESD protection and solder some wire across. In our implementation, that is the approach we used and put hot glue on top to prevent accidental disconnection.Also, the IMU was never installed on our version because the footprint lacked the paste opening, therefore no solder was present, and the part was never connected to the board. This simple mistake will be fixed in the next implementation: The Hiveboard.The HiveSight was designed to be used with the STM32F429ZIT Nucleo (despite the silk screen mentioning STM32F426, another mistake from our part). All the files (schematic, BOM, PCB, Gerbers) are in the Github link. The HiveBoard & the BeeBoardThe HiveBoard is the next implementation of the project. It will consist of:· An central MCU (STM32H7) · 6 USB-C channels containingo An SPIo A Clock signal (38.4MHz)o A sync signalo Interrupt request (IRQ) (Receive)o Chip select (nCS) (sending)o Reset (sending)· A 38.4 MHz Crystal · A WROOM ESP32 for Wi-Fi communication· Redriving ICs for LVDS and LVCMOS signals· An FT4232 FTDI debug IC· A u-USB for debugging purpose.· An ethernet port to transfer the information to the Robot computer.· An IMUThe HiveBoard is the motherboard for distributing the clock to the 6 USB-C channels and Syncing all the clocks together. Also, it hoards the information sent by the BeeBoards. The Beeboard are 5x7 cm board hosting a single DW1000, an antenna, redriving circuits and switches in order to detect the USB-C polarity. Connected to a HiveBoard channel, the Beeboard sends an IRQ to the Hiveboard, meaning it has information. The Hiveboard then initiate the SPI transaction to retrieve this information and calculates the distance and the angle of the signal received. The HiveBoard and the Beeboard are both in the development stage. We do not have any 3D model now, but it will be updated in the next weeks. Stay tuned on the GitHub for the updates.The software sideAs for the software part of our project, the development is guided by the three fundamental requirements of swarm robotic, which are the following:· Agents in the swarm must have the ability to exchange data with each other, on 1 to 1 basis (unicast) as well as 1 to many (broadcast)· Agents in in the swarm must be able to locate other neighboring agents with reference to themselves.· Agents in the swarm are controlled by a shared intelligence which takes decisions for the swarm based on the information supplied by the agents constituting the swarm.The goal of our project is to deliver a platform that will be able to support those features and expose them for any system. To test this, we will be using our platform alongside an existing robot based on a Raspberry-Pi (See robotics section). The following figure present each component of our architecture, which will be detailed in the following sections:The HiveBoard and its firmware, the HiveMindThe HiveMind is the core of our system and therefore handles the three requirements of the swarm exposed earlier. It is based on a STM32 processor which runs a firmware that interfaces further hardware components (like the BeeBoard) as well as running the Swarm Intelligence. The HiveMind makes all the calculation to translate the data received from the BeeBoard into an actual position associated with a robot. As for the Swarm Intelligence, it is based on Buzz, a programming language dedicated to programming swarms of robots (https://the.swarming.buzz/wiki/doku.php?id=start ). This Buzz script is runs internally in a virtual machine in the firmware inside all HiveBoards, relying on the data exchanged on the network to takes decisions. Alongside the STM32, an ESP32 is connected via SPI and runs its own firmware, responsible of handling the Wi-Fi connectivity and data exchange across the network. Furthermore, this board exposes two choices of interface to communicate to the robot, either via ethernet or USB.The Host RobotThe host robot is a robot in which we connect a HiveBoard. The core system component that we develop is the bridge. It handles the command sent by the Swarm Intelligence to the robot, like executing a movement or internal sharing data. The rest of its feature is on a per use-case basis. In our case, the goal is to perform a mapping of the environment to share across the swarm, with the use of a camera, a lidar and RTAB-map, the mapping software. The goal of our development on the host robot is to show the potential of our platform and swarm robotics.The Augmented Reality Android AppAlongside the swarm of robots, we are also developing an android application to be able to monitor the state of the swarm and command it. To better visualize the state of the swarm and distinguish robots from one another, the app will feature Augmented Reality to add visual cues on robots as well as take commands, like setting a waypoint in the environment to get to. To interact with the robots and send commands, the Android device will be connected to an HiveBoard with a USB connection also delivering power to the board. However, the Android device will not be able to be located in space with our BeeBoards, as our architecture only supports 2D positioning on the Android device will be significantly higher from the ground, but it will be able to have an idea of the position of robots with the use of April Tags, which are specialized Qr codes to identify robots, and evaluate their relative position.For more details:https://github.com/SwarmUS Support from PCBWay would mean a lot to us. It would lightened the enormous financial pressure we are under. With the sudden rarity of electronic components, our BOM upped its cost, and we are afraid it might affect the functionality of the HiveBoard (ie, 3 channels instead of six) and force us to choose unfit component for our application. We would be proud to represent PCBWay as a major partner at the MÉGAGéniale Expo in December 2021!

I work with Formula Kentucky. We are a university club that competes in the Formula Society of Automotive Engineer's racing series. Every year, we design, fabricate, test, and race a scaled down formula racecar. Our current car is FK04, which we have been working on for 2 years. With this car, we want to take a huge leap forward in our datalogging capabilities. Part of our new data logging package is this project, a Controller Area Network Hub that connects our sensor boards to the data logger while also powering them.While relatively simple in schematic, this board plays a vital role in allowing us to have multiple sensors sending data to the data logger. We need a board that can make connections while not taking up very much space. This board accomplishes both of those things by being about 1.5 inches by 1 inch. Being this size allows the board to be easily placed anywhere we need it on the car, allowing us to connect as many sensors as we want wherever they are on the car.

Hello, my name is arda. I'm doing Arduino projects for over 5 years. I designed this PCB because there are no shields made for Arduino Nano.Also if you're interested in NRF24 and Arduino it has a lot of issues.This PCB allows you to use Arduino shields and NRF24 radio modules on Arduino NANO without using jumper cables.