Interesting project.

[sliptonic]

I hope you don't mind me posting an issue. I couldn't find another way to contact you.
I've been playing with some idea for an open source treadmill control. I stumbled on your project and what you're doing isn't exactly what I had in mind but made me wonder if there's a community of treadmill hackers out there.

I'm experimenting with heart-rate mediated interval training so I want actual heart rate data to control the belt in real time. Let me know if you're interested in chatting. shopinthewoods 'at' gmail.com

[peychart]

I have not yet been able to fully test the complete assembly of my implementation; delivery times of AliExpress are sometimes very long on some parts.
This is my next priority.
In a future release, I intend to try to incorporate heart rate control, such a sensor was already present on the proprietary driver of this treadmill.
Then, programming side, everything is possible, only a lack of imagination can limit the final result ... ;-)
In the meantime, I am on another domotization project that I will publish later.