For more info/detail/spec take a look at https://treadmillsensor.blogspot.com/ The Bluetooth footpod spec is the "running speed and cadence" doc: Bluetooth profile doc The ANT+ profile is - ANT+ profile doc
@Ivor started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
For more info/detail/spec take a look at https://treadmillsensor.blogspot.com/
The Bluetooth footpod spec is the "running speed and cadence" doc: Bluetooth profile doc
The ANT+ profile is - ANT+ profile doc