Hardware projects tagged c

Open hardware projects tagged c on BoardRepo. View schematics and PCBs in the browser and download the sources.

Projects

38 boards
KHEops70
@mgsg

Keyboard | Hall Effect | OrthoLinear | Programmable | Standard-sized

schematicpcbbomSTM32switchregulatorcrystal
AGPL-3.00 stars0 commentsOct 1, 2026
AthanLamp
@mahmoud1205

Hardware, software, and devlog of the Athan Lamp project.

schematicpcbbomAVRswitchregulatorcrystal
MIT0 stars0 commentsOct 1, 2026
pic-lcd-demo
@kamorrissey

Breadboardable circuit and firmware for driving a Lumex LCD-S401M16KR multiplexed 3V LCD segment display using the LCD driver module of a Microchip PIC16LF19156 MCU. Also provided are two PIC-based AC square wave generators for testing bare LCDs. Repo ready to clone and customize with KiCad and MPLAB X IDE, full projects provided.

pcbbom
MIT0 stars0 commentsOct 1, 2026
thermometer-digital-min_max
@k4lcifer

A digital min/max thermometer.

schematicpcbbomgerbersAVRbatteryswitchresistor
AGPL-3.00 stars0 commentsOct 1, 2026
pir-trigger
@buha

Camera trigger using PIR sensor

pcbbomgerbers
AGPL-3.00 stars0 commentsOct 1, 2026
Orione
@ilbuso

Custom RPi pico keyboard with firmware and PCB design

schematicpcbbomgerbersRP2040switchdiodeled
MIT2 stars0 commentsOct 1, 2026
Antdrive
@edatki

Motor driver for antweight combat robots

pcbbom
MIT2 stars0 commentsOct 1, 2026
OmniProbe
@emertcakir

Open-source SWD, JTAG, UART, SPI, I2C and Logic Analyzer platform powered by RP2040

schematicpcbbomRP2040USB-Cregulatorcrystal
MIT3 stars0 commentsSep 30, 2026
stm32-nrf24-wireless-node
@denysderihlazov

Custom STM32G431KBT6 + nRF24L01 wireless communication module with SSD1306 OLED interface, 2-layer PCB and STM32 HAL firmware. Hardware (KiCad), Gerbers, BOM and documentation included. Fully assembled boards tested in practice.

schematicpcbbomgerbersmounting hole
MIT3 stars0 commentsSep 30, 2026
tsys01
@eddyem

BTA primary mirror thermal monitoring using STM32 and TSYS01

schematicpcbbomgerbersSTM32USBswitchresistor
AGPL-3.04 stars0 commentsSep 30, 2026
PlantWateringDevice
@robertgawron

A home plant watering device based on a simple 6-pin PIC microcontroller and 74HC chips.

schematicpcbbomPICUSBswitchpotentiometer
MIT5 stars0 commentsSep 30, 2026
TI-84-GPT-HACK
@chineseprince07

A mod that gives your TI-84 Wi-Fi, ChatGPT, and the ability to disappoint your math teacher in ways never thought possible. Original idea by Chromalock, reconstructed by myself after his repo is taken down.

schematicpcbbomgerbersRISC-Vresistorconnectortransistor
AGPL-3.06 stars0 commentsSep 30, 2026
STM32-Ethernet-Camera
@danielmartensson

PCB board with camera and ethernet connection + CAN-bus

pcbbomgerbers
MIT16 stars0 commentsSep 30, 2026
Mew
@konachan700

Hardware password manager

pcbbomgerbers
AGPL-3.026 stars0 commentsSep 30, 2026
Z80Atmega128
@46nori

Real Z80A system with I/O emulated by AVR(ATmega128)

schematicpcbbomAVRUSB-Cswitchregulator
AGPL-3.09 stars0 commentsSep 30, 2026
deskhop
@hrvach

Fast Desktop Switching Device

schematicpcbbomgerbersRP2040USBresistorcapacitor
AGPL-3.07911 stars0 commentsSep 28, 2026
computie
@transistorfet

A collection of 68k computer projects, including a unix-like operating system written in C that runs on them

schematicpcbbomswitchregulatorcrystalresistor
GPL-3.067 stars0 commentsSep 24, 2026
easyriderc
@stamina

Motorcycle ECU STM32 ARM Cortex 4 source code and hardware PCB design

schematicpcbbombatteryswitchpotentiometerrelay
GPL-3.012 stars0 commentsSep 24, 2026
ch552
@nicola-strappazzon

Basic projects with CH552G

schematicpcbbomUSB-CswitchpotentiometerUSB
LGPL-2.130 stars0 commentsSep 23, 2026
ZigBee_SmartMeter_Reader
@tropaion

This is a ZigBee device to collect data from smartmeters using the DLMS/COSEM protocol.

schematicpcbbomESP32RISC-VUSB-Cswitch
AGPL-3.032 stars0 commentsSep 23, 2026
microdevt
@krzysztofw

Microcontroller Development Toolkit

schematicpcbbomAVRUSBswitchresistor
GPL-2.021 stars0 commentsSep 23, 2026
ch552g-dev-board
@blueokiris

A simple breakout board with minimal hardware design for the CH552g

schematicpcbbomUSBresistorcapacitorconnector
GPL-3.018 stars0 commentsSep 17, 2026
gps-tracker
@mohamedboubaker

STM32 and SIM808 GPS tracker with a custom PCB design and support for MQTT and AES-128 encryption.

schematicpcbbomSTM32switchregulatorcrystal
No license37 stars0 commentsSep 17, 2026
signal.echo
@coderarjob

Demo board which generates sample signals experimenting/checking oscilloscope features

schematicpcbbomAVRswitchcrystalresistor
AGPL-3.04 stars0 commentsSep 17, 2026
stm32-plc
@danielmartensson

STM32 microcontroller with lots of periferials such as ADC, differential ADC, Input Capture, PWM, USB, Encoder, DAC, Digital Input, RTC, CAN-bus + Alarm etc.

schematicpcbbomSTM32USBbatteryswitch
MIT167 stars0 commentsSep 8, 2026
pic-ir-thermometer
@kamorrissey

Open-source hardware and firmware for a PIC16LF19156-driven IR non-contact thermometer using a Melexis MLX90614 sensor and Lumex LCD-S401M16KR LCD segment display.

schematicpcbbomPICbatteryswitchresistor
MIT0 stars0 commentsSep 5, 2026
ph
@ranthalion

pH Module

pcbbom
MIT3 stars0 commentsSep 5, 2026
kitchen-clock-poc
@mark-271

Kitchen clock firmware.

pcbbom
GPL-3.02 stars0 commentsSep 5, 2026
aciduino
@midilab

Affordable and DIY, Roland TB-303 and TR-808 step sequencer clone and midi controller. Packed with additional features, specifically designed for musicians and DJs to use on live performances or streamline their studio creative process.

pcbbom
MIT323 stars0 commentsSep 5, 2026
mmpp
@eddyem

MMPP (Multimode photometer-polarimeter) for the telescope Zeiss-1000 of SAO RAS.

pcbbom
GPL-3.00 stars0 commentsSep 5, 2026
phloppy_0
@piotr-wiszowaty

Commodore Amiga floppy drive emulator

pcbbom
GPL-3.012 stars0 commentsSep 5, 2026
elektronika-1
@benjaminsoelberg

A replacement module for the USSR vintage LED watch Elektronika-1 anno 1978

pcbbom
GPL-3.028 stars0 commentsSep 5, 2026
sheepypad
@cipulot

ISO Enter shaped macropad

pcbbom
MIT1 star0 commentsSep 5, 2026
esp32-ble-mouse-remote
@kayaked

Bluetooth LE hybrid of a computer mouse and a TV remote. (software/electronics)

schematicpcbbomESP32batteryswitchregulator
MIT0 stars0 commentsJul 9, 2026
knock-knock-esp32
@universumgames

A knock pattern recognition with esp32

schematicpcbbomESP32RISC-Vswitchrelay
CC-BY-4.00 stars0 commentsJul 9, 2026
gb-dumper
@wodowiesel

GB-Dumper is a PCB project for Gameboy cartridge dumps and backups via Arduino Nano on spi-bus & USB

schematicpcbbomswitchresistorcapacitorconnector
CC0-1.00 stars0 commentsJul 9, 2026
msxpi
@costarc

Interface for MSX to Connect and use Raspberry Pi resources

schematicpcbbomswitchresistorcapacitordiode
MIT0 stars0 commentsJul 9, 2026
uvexpose
@uxabix

A portable UV exposure controller firmware. The project uses a modular architecture with persistent settings, preset storage in Flash, battery protection logic, and an encoder-driven OLED UI.

schematicpcbbomSTM32batteryswitchbuzzer
MIT1 star0 commentsJul 9, 2026

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