micromesh/examples/README.md

Board examples

These examples connect a MicroPython board to the hardware UART exposed by a Meshtastic radio. The radio must have its serial module enabled in PROTO mode at 115200 baud.

Board	Example	MicroPython UART	TX pin	RX pin
Seeed Studio XIAO RP2040	xiao_rp2040.py	UART0	D6 / GPIO0	D7 / GPIO1
Raspberry Pi Pico / Pico W	raspberry_pi_pico.py	UART0	GP0	GP1
Generic ESP32	esp32.py	UART2	GPIO17	GPIO16

Wiring

UART signals cross between the two boards:

MicroPython board TX  -> radio RX
MicroPython board RX  <- radio TX
MicroPython board GND --- radio GND

Both ends must use 3.3 V UART logic. Do not connect the power pins unless you have confirmed the voltage and current requirements for both boards. Meshtastic radio UART pin names vary by model and may need to be configured in the radio firmware.

Run an example

Install MicroMesh, copy the matching example to the board as main.py, and reset it:

mpremote mip install package.json
mpremote fs cp examples/xiao_rp2040.py :main.py
mpremote reset

Each example requests the node configuration, listens for text messages, and broadcasts one greeting after configuration completes. Remove the mesh.sendText(...) line for a receive-only application.