Awesome

Remarkable 2 Foot Pedal

This repository contains schematics, a 3D model and code for a Teensy LC to connect a foot pedal switch to the pogo pins of a reMarkable 2.

Pictures

Assembled and in action:

Action Action Action

Pogo pin converter:

Pogo

Foot pedal:

Foot pedal

Necessary Hardware

Teensy LC (or better) here
Foot pedal (e.g. from Digikey)
USB-A connector (e.g. from Digikey)
Pogo pins (e.g. from Digikey)
Small neodym magnets to hold the adapter to the RM2

Schematics

The pinout of the pogo pins is described in the remarkable wiki:

(left to right, closest to USB-C)  
  
GND, ID, D+, D-, VBUS

Connecting GND to ID will enable the OTG power supply. If you mount the USB-port upside/down, you can simply connect the pins 1:1 as the USB pinout is:

(right to left)  
  
GND, D+, D-, VBUS

For the foot pedal, connect the switch to ground and a pin on the Teensy (the example code uses pin 2).

Software

The sketch for the Teensy reads the input from pin 2. If it is pressed only once within 300ms, "Arrow Right" will be sent as keypress, it it is pressed twice, "Arrow Left" will be sent. This allows you to move forward and back through the document.