How to (safely) calibrate current

In ArduCopter is current calibration easy. Just turn around props and switch their order. But how can I safely measure/calibrate current in plane with one motor? Just hold the plane in hand?

“Safely” is a bit of a stretch, but that’s how I would do it. Or fix the nose against some obstacle / the ground.

If flying the plane isn’t a safety issue, you can do it with used capacity:

  • charge the battery completely full
  • fly around with (suboptimal configured) current logging
  • read the remaining capacity value from the log
  • calculate used capacity = total capacity - remaining capacity
  • charge the battery with a charger that can tell you how much mAh it put into the battery
  • calculate < new amp/volt = old amp/volt * (charged capacity / used capacity) >
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