KiCad boards from 7 GitHub repositories tagged “uart-bridge”, the most starred first; open any of them in PCBKit.
TheYoctoJester/dutler
A bench butler for your Device Under Test: turns a Raspberry Pi Pico into a USB-serial console bridge with power-relay and MOSFET strap/reset control for embedded-Linux bring-up and hardware-in-the-loop.
upsidedownlabs/MSP430-Breadstick
Texas Instrument MSP430G2553 based development board.
kattaliraees/USBTypeC-to-UART
USB Type C to Serial port convertor boards for new MacBooks and other laptops
xqe2011/saihub
Give your agent a hand: MIT-licensed ESP32-C5 IO board that speaks MCP, so Cursor, Claude Code & Codex can drive GPIO, PWM, UART and power on real hardware.
Boardoza/Boardoza_CY7C65213_USB_to_UART_Breakout_Board
USB to UART breakout board based on the CY7C65213 for reliable serial communication over USB.
svddevelop/x033_Converter_CDC_UART_SPI_I2C_PIN
CH32X033 as a USB multitool that allows you to configure pin, UART, SPI, and I2C settings through a terminal.
TheYoctoJester/dutler
A bench butler for your Device Under Test: turns a Raspberry Pi Pico into a USB-serial console bridge with power-relay and MOSFET strap/reset control for embedded-Linux bring-up and hardware-in-the-loop.
upsidedownlabs/MSP430-Breadstick
Texas Instrument MSP430G2553 based development board.
