We’re trying to calibrate the ESC, and Qgroundcontrol is giving a battery emergency error, and it’s not making the sound sequence that it should during calibration. We then test the motors and there’s no power going to the motors.

Hey @Zshaffer, Can you tell us the voltage of your battery as measured by a multimeter? Can you then show us the battery voltage as reported by QGroundControl?

@bhanner-bell Multimeter gives us 16.8V And here’s a screenshot of QGroundControl: [image]

Could it be that your cell full voltage is too low? 16.8v should definitely not cause a battery emergency otherwise. The Full Voltage (per cell) should be 4.2v

We figured out that two of the wires were backwards from the esc to the fc.

Did resolving the wires solve your problem?

It fixed this problem, but now we’re on to only one of the motors getting power.

Are you using the updated ESC? See the note here.

We are using the new one. We think it might be bad. We’ve plugged another motor into the cables that powered the motor that seemed to be working, and the other motor powered up fine. So it seems like the ESC might be bad.

We verified each of the motors work, but only one set of connections from the ESC will push any power to the motors. We checked every combination with a multimeter as well, and the ESC is only pushing power to one set of motor wires.

ESC Calibration Issue

Technical Support (Official) AVR Drone Software

bhanner-bell October 17, 2022, 2:33pm 10

Please see my post here and let me know what the outcome of that testing is.

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ESC Calibration Issue

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