Documentation

Everything the device explains on its own screens, plus the guides worth reading before you start. The same pages are served by the device itself once it is on your network.

Start here

Quickstart Nine steps from plugging it in to rowing with your phone, with a diagram of what connects to what. Full setup guide Building one from a bare ESP32-S3 board: buy the parts, flash the firmware, join WiFi.

Reference

What the LED means Every colour and blink pattern, animated at the real speeds so you can compare side by side. Optional extra hardware Heart rate on the PM3’s own screen, wake detection, and the power switch. Three independent circuits, none of them required. ANT+ broadcasting Pairing a watch or bike computer over ANT+, and where to get the free network key it needs.