RAK GPIO Pin Mapping

RAK GPIO Pin Mapping

The RAK4631 uses symbolic labels for its I/O Pins on the module and baseboard silk screens. The following table shows the mapping of the RAK4631 GPIO pins to the corresponding Arduino pins and the MCU Port numbers.

RAK Pin	nRF52840 Pin	Arduino GPIO	Remark
IO1	P0.17	17	used for GPS PPM signal if GPS module is connected
IO2	P1.02	34	used to power all peripheral modules, not available for user application
IO3	P0.21	21
IO4	P0.04	4
IO5	P0.09	9	The 'User Button' is mapped here.
IO6	P0.10	10
IO7	P0.28	28
SW1	P0.01	1
A0	P0.04/AIN2	A2
A1	P0.31/AIN7	A7
SPI_CS	P0.26	26

When configuring GPIO pins in your device settings, the Arduino GPIO numbers should be used.

Example

meshtastic --set external_notification.output 10

This will use IO6 on a RAK4631

Note

There is no usable GPIO pin on any RAK base board except the 'big' baseboard RAK19001 without adding a RAK13002 IO module or a third party IO sensor breakout.