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
Convert power delivered over USB-C PD to charge 10S/12S Li-Ion battery
QFH active antenna analog front end and down converter
RS485 Spy is an open-source hardware tool for real-time monitoring, logging, and testing of RS-485 networks
GNSS reciever ready to RTK (Real time kinematics) technology
Battery Management System (BMS) with Buck-Boost Converter
A nRFMicro/Pro Micro compatible Bluetooth LE board, uses MDBT50Q nRF52840/nRF52833 module
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.
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.
Open Wheather Station based on STM32
Dual-cell Li-Ion Battery management system.
This is a Meshtastic Solar Node PCB based on the Heltec HT-CT62 and the linear solar charge controller TI BQ25185.
Pro Micro/Elite-Pi compatible RP2040 board with USB-C, 8MB flash and up to 25 GPIOs
Circular LED Panel
MPTT solar charge controller for 18650 cells.
Without using a USB-C PD controller chip, handling communication over the USB cable, USB-C standard allows to get 5V up to 3A through a hardware availability detection. Here I show a design developed on KiCad and made through JLCPCB, powering from a USB-PD source and providing 5V and 3.3 (through a step-down converter) up to 3A.
A 2-layer PCB for a small sumobot including MSP430G2553, regulators, motor drivers, and IR receiver.