Option 1: Tundra Tracker Developer Board

danger

This page is currently being written.

I've had two separate electronics implementations:

ESP32 with Wi-Fi and OSC
Tundra Tracker Developer board with SteamVR Input (this page) and a separate OSC application

IDE

I could not figure out how to make PlatformIO work with this, so I followed Tundra's store page links, which at this time of writing suggests:

use the Arduino IDE,
in the Arduino IDE, add the RP2040 Arduino Board Library to the Arduino IDE (read the README on how to install it),
turn the tracker ON,
connect the USB programming port (not the tracker USB port),
in the Arduino IDE, select the Adafruit ItsyBitsy RP2040 board on COM port to upload to.

You need to attach each flex sensor to an ADC pin, by using a voltage divider.

At this time of writing (2024-02-07), the Tundra Tracker Developer Board store page has link to a schematic which appears to be incorrect.

The ADC pins on the original schematic are swizzled:

The ADC pins located on the IO_0 are actually 27, 28, 29, and not 26, 27, 28.
The ADC pin located on the IO_1 is actually 26, and not 29

I have used the correct ADC pins on the IO_0, which are 27, 28, 29.

I've reused and modified Tundra's own sample code. Tundra's README contains sufficient information to be autonomous.