Gimbal Motor Current Sensing with SimpleFOCShield

I would like to use the SimpleFOCShield with in-line current sensing.

I want to sense the current from an iPower GBM4108H-120T Gimbal Motor, and it seems that I need to get the shunt resistor value and the amplification gain (current-sense op-amp gain) to do this.

How can I get these values, please?

Also, how should I decide to use a range of 3.3V or 5V? I’d like to measure small current changes as accurately as possible.

Thank you very much.

Hello @bwm,

You can contact the manufacturer and ask for those specifications at: Support : iFlight Support

Or since that motor has successfully been tested with that library you could ask for the values used in the community:


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