Browse hardware designs
BoardRepo is the GitHub for hardware. View any KiCad schematic, PCB, and BOM in your browser and download the sources, no install and no account needed.
Public designs
Small low-power MPPT module for photovoltaic cells.
RS485 Spy is an open-source hardware tool for real-time monitoring, logging, and testing of RS-485 networks
PCB board for Smogly sensor [ESP8266/ESP32]
GNSS reciever ready to RTK (Real time kinematics) technology
Linear power supply, with digital control
A nRFMicro/Pro Micro compatible Bluetooth LE board, uses MDBT50Q nRF52840/nRF52833 module
A simple breakout board with minimal hardware design for the CH552g
byrandev, a nRF52840 dev board
Open-source air quality and environmental monitoring node with STM32H743 + ESP32-C3, LoRaWAN, RS485, USB-C, Li-ion charging, and multi-sensor support.
Small and compact 20-keys keyboard
Custom industrial-grade PLC and logic controller engineered around the ESP32 platform.
Universal Arduino based data logger to SDcard.
With active balancing circuit in the future (v2.0 ISA), the circuit will be able to charge multi-cell connected in parallel and balance between them while discharging.
RP605K is a compact ultra-low-power buck-boost converter module with a built-in battery monitor. Vin: 1.8-5.5V and Vout: 3.3V up to 300mA
Open Wheather Station based on STM32
Dual-cell Li-Ion Battery management system.
Hardware design files, schematics, and 3D models for KIISU SMOL — modular networking development board
XIAO base board PCB & configuration for ESPHome based sensors.