maximusdm said:
1. Why does the sensor value not change on force?
2. Also is there a way to simulate pedal force without installing it on motor?
3. I read the wiki but is not very clear how to do it with 2 screwdrivers.
3a. Maybe someone knows better how a torque sensor works and has some ideas.
1. It probably is changing, however, it is calibrated to record force levels FAR ...
FAR in excess of anything you can generate with your fingers.
2. No. See answer 1. Above. The whole system has to be assembled and the test weights need to work through the leverage of the ~6"+ crank length to generate meaningful signal levels.
3.I skimmed the wiki and did not take away anything involving Screwdrivers. What I took away was that calibration could involve known weights like large bags of sugar, or flour, or children(!). I can't see how you could simulate a 'known' weight with two Screwdrivers. I would probably be unconscious after two Screwdrivers but your alcohol tolerance might be much higher.
3a. It has been explained to me how the torque sensor works. To have better ideas than the ones in the wiki, I would need to know what exactly is your issue? Is your motor operational or not?