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Old 07-30-2023 | 09:43 PM
  #56  
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trilerian
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I took a turn trying something else this evening. I hooked my telemetry unit up to the MiniPro flywheel unit and ran a run using my telemetry unit. I had to tweak the code a bit to use 2 hall effect sensors instead of just one for RPM. I need to add the third, I'll work on that later. But for a first attempt I am pleased with the outcome. This is a Slot Machine 21.5. It compares pretty well to the MiniPro output with one big caveat. My numbers don't go above 65% efficiency. So there is that...

For anyone curious, I redirected serial output to a terminal monitor called RealTerm. I then took my readings and added them into excel and created formulas for Torque and Power. My initial sample rate is 10hz. I was having issues going above that due to my voltage and current averages interfering with the rpm. In order to proceed I am going to have to completely rewrite the code for faster sample rates. My original telemetry unit doesn't need to update faster than once per second, or 1 hz.

EDIT: Looks like I didn’t start the data quite right on the graph. I just need to grab the first values, so the power at 0 rpm is 0. Torque will also be zero, nature of the flywheel…



Last edited by trilerian; 07-30-2023 at 10:10 PM.
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