bike crank powermeter with ant+ transmitter using NRF24AP2 and arduino pro mini,

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im trying to make this powermeter for my bike.. it uses the strain sensors to measure the torque and i have a hall sensor to measure the rpm to get the power.. this part i have done and tested using bluetooth but i want this to connect to my garmin using ant+ so that all the data is at one place and is synced to strava.

but i am not able to understand how to do it like how to even start.. there is not much information on this... there were 2 libraries that i found on ant+ https://github.com/brodykenrick/ANTPlus_Arduino but these were for the receivers to display the information from the sensor.. and im not really that good with this... i just know basics so it would be great if anyone can help me ty.

I don't know anything about ANT+ so if you have everything else working I doubt if I can help.

However I think it would be useful to provide more explanation of all the parts you are using and how they relate to each other and communicate with each other.

...R

Look into a gear tooth counter instead of the Hall. You could count teeth on the big chainring and get torque x rev fraction for what, 62 teeth (can't remember) for a closer approximation of power.

Build something where cranking lifts the bike and rider straight up, you won't need to measure torque. Other way is to generate electricity, perhaps harness a set of rollers but then rollers do resist turning.