PeloMon: Peloton data capture with Bluetooth #Peloton @ImranSHaque

Imran Haque has developed a circuit which interfaces with a Peloton – it gathers the data independently from Peloton software and send it over Bluetooth to your own device.

 I’ve decoded (most of) the protocol that the Peloton bike uses to communicate with its head unit tablet and built a device, the PeloMon, that takes that data during a ride, without interfering with the Peloton software, to broadcast it over Bluetooth LE to whatever devices you’d like — a watch, Zwift, Wahoo, whatever. Stick around for logic analyzer traces, hardware diagrams, cursing at Bluetooth, and some nice interfaces.

I chose the ATMega 32u4-based Adafruit Feather 32u4 Bluefruit LE mostly because I knew that I wanted to maintain the resistance calibration table- in non-volatile memory, and I knew that could be done reasonably with the EEPROM support on the ATMega whereas I’m not familiar with how well that’s supported on the Cortex-M0 or nRF52832 boards.

You can check out the extensive series of articles detailing finding the data protocols to building an interface unit above with details on GitHub.