ESC Calibration Problem (X-Rotor)

General
1

Hello everyone. This time I’m here with a different question. The help I received before was really useful while I was building my own drone, and I’m hoping it will be the same today.

A friend of mine is having trouble with ESC calibration during the drone build process. The radio transmitter he’s using is a FlySky i6X, and the ESCs are from the HobbyWing X-Rotor series.

While trying the standard Pixhawk ESC calibration method, we ran into the following issue: when we connect the battery for the second time and press the safety switch (the switch stays solid red), we hear a long “beeeep” sound. However, the throttle does not reach its maximum value. When we checked the ESC datasheet, we saw that it lists “Throttle Range Calibration” followed by “ESC Calibration” steps. At this point, we got a bit confused. Isn’t the purpose of ESC calibration already to calibrate these values? If so, why is the throttle calibrated first under a separate heading?

Or could this problem be unrelated to that and caused by something else? I’d appreciate any help in solving the issue. I’m sharing the relevant datasheet and PDF files attached. PDF File

3

Hello, KeCi.

First, you should specify which motor (or ESC) from the X-Rotor series you are using.

4

You’re right, Masayuki — I missed that detail. We’re using the X-Rotor 40A series. The motor brand is Sunnysky X4108S 480 KV.

Mot res
Mot res392×319 26.1 KB

Esc ss
Esc ss555×330 30.7 KB

5

Use this calibration method, of course after you’ve done your radio calibration:

6

Dear forum members, I forwarded your suggestions and what was written here to him, and I got a response today. He told me he had solved the problem, and I asked him how he did it. He said, ‘I plugged the ESC inputs into the Pixhawk backwards.’