Hi folks,

I new in this hobby and I am confused about a few things (ok, many things).

 

The Wiki says that to calibrate the ESC's, I should have my transmitter endpoints set to +100%/-100%. In the radio calibration section of Mission Planner, it talks about normal uSec pulse width ranges for the channels in the 1100-1900 range.

 

I am running an er9x and when I set it to +/-100%, the Radio Calibration page reports that the uSec range is 975-1980  with the midpoint at about 1480 on each channel.

 

Is it vital to have the PWM uSec pulse widths set to the nominal range, or is what I'm getting acceptable? Are the literal values of these settings anticipated somewhere in the APM2 firmware so that not being in the correct range will produce unexpected behavior?

 

Thanks!

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  • Moderator

    Those values should work just fine. ESC calibration simply wants to see a high and low value, all the way up and all the way down. With your values going higher than high and lower than low, it should work just fine with any ESC. 

    As for the values and APM, you'll inform the APM about your transmitter ranges for this channel when you do the radio calibration. It will learn the high and low, so no worries.

    You can calibrate your ESCs manually by attaching each ESC to ch3, in tern, and following the ESC manufacturer's calibration procedure. That is often easier, during initial setup (before you have it all wired) than using the APM-assisted ESC calibration process. 

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