Betaflight-configurator: [Feature Request] Add KV to RPM in Motor tab

Created on 30 Oct 2019  路  5Comments  路  Source: betaflight/betaflight-configurator

I know it can easily be calculated but it would be super convenient to have it right there, Great for checking rewound motors, or specs on new motors.

Cheers

Feature Request

Most helpful comment

The only problem with this, is that the space in the motor tab where we put the telemetry values, is very reduced. We can add one or two more values, but I don't think we can add any more. If more people agree that this is a valuable addition, I can add it.

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The only problem with this, is that the space in the motor tab where we put the telemetry values, is very reduced. We can add one or two more values, but I don't think we can add any more. If more people agree that this is a valuable addition, I can add it.

I have started to implement this, but I have found a problem: to calculate the KV, I need the voltage that is using this motor... the RPM bidir protocol does not provide this information. The old ESC SENSOR provides it, but you need the additional wire.

Am I missing something? Or do you want to provide it only when the additional wire is connected? Will be use the general voltage as a value for all the motors enough precision for this?

You should be able to use vbat.

Yerp, kV = RPM / (vbat * commanded throttle)

I need to use the commanded throttle? I have started with it, better to continue the discussion in the PR https://github.com/betaflight/betaflight-configurator/pull/1823

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