5.3 KiB
5.3 KiB
Current sensor calibrator
This calculator will allow you to calibrate your current sensor better than with the mAh charged vs mAh consumed method. You need a current meter and a way to see what current and throttle percentage the FC reports (the OSD is a good way to do this). The steps to follow are: 0. Make sure you have capacitors on ESCs so the measurement will not be influenced by errors from ESC noise.
- Set
BATT_AMP_PERVLT=100andBATT_AMP_OFFSET=0. - Power your plane with propellers on and a current meter connected between FC and pack.
- Arm and run the motor in manual mode. For four different throttle positions, note down: The throttle position (from the OSD), the reported current (from the OSD), and the actual current (from the current meter). The best throttle positions to use would be 25%, 50%, 75% and 100%. Do not check current on idle as this will be inaccurate.
- Enter the values below, and the calculator will give you the proper BATT_AMP_PERVLT and BATT_AMP_OFFSET values that you now need to write to your plane's parameters.
| OSD current: | |
| Real current: | |
|
Results: |
|
BATT_AMP_OFFSET:
|
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BATT_AMP_PERVLT:
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(Many thanks to mfoos for writing this note.)
Last updated on February 05, 2023. For any questions/feedback, email me at hi@stavros.io.