I was just reading DCrainmaker’s latest post on the a new silent trainer here, the Elite Turbo Muin. A lot of the feedback from people has been asking if the App does power why couldn’t they build in power transmission via a sensor!
Here is how I can do this, and I’ve thought about doing it.
- Get the regression curve
- Make it yourself with a real powermeter (Powertap, Quarq, SRM) with the LINEST feature in Excel for a 3rd or 4th order polynomial.
- Use the CSV file from the App and regress the curve yourself
- Using the reference code from Nordic Semiconductor in the SDK you setup a speed measurement with a reed switch / magnetic sensor and measure rotational speed.
- Two lines of code
- Calculate power based on speed
- Update ANT+ transmission