5 ms·

There’s no mention of the wheel sensor. How does it get the bike telemetry?

• dchest 12d ago
  GPS
• _kb 12d ago
  Since the ANT+ protocol implementation seems to already be there, it seems a likely/sensible future path is to implement wheel sensor support. It provides much higher accuracy of speed/distance than GPS and lower power draw. On that note, this is a world I've recently taken a dive in to. I was about to roll a Pi Zero / ESP data logger to track distance travelled on my commuter bike for planning service intervals. Was keen on a solution that didn't involve draining a phone battery and remembering to start trips, a full bike computer, or smartwatch. After a bit of research I picked up a Garmin Speed Sensor 2 - highly recommend as a bit of stupidly effective tech. The device straps around your hub and is essentially a coin battery and mems rotation sensor. In addition to running as an ANT+ peripheral it will operate standalone and log the last 300 hours of ride time then sync next time you open the app. Speed and distance is then inferred based on wheel circumference.
  • hi_hi 10d ago
    I really appreciate this info. I went old school when I hacked my own esp32 bikeputer together with a wheel magnet and reed switch. It was fun to put together, but pretty janky with wires tapped up and it wouldn’t survive any off-roading. I wasn’t aware of the more modern ANT+ approach. Looking forward to a V2.