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Permalink Reply by Greg Fletcher on February 19, 2012 at 8:49pm

ESC's should handle it no problem. I have tested cheap ones to 650 Hz. It's older analog servos that can't handle high update rates. I think Arducopter runs at 400 Hz to the ecs's, not a problem.

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Permalink Reply by Paul Triantafyllou on February 19, 2012 at 9:23pm

You're saying I can operate my ESCs at higher frequencies without reflashing them?

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Permalink Reply by Paul Triantafyllou on February 20, 2012 at 11:03am

I suppose I should reiterate my question. I've been sending a 50Hz PWM signal to my ESCs but that means I can only update my ESC 50 times a second. I'm using the Turnigy Pentium/Plus 18A ESC.

I tried reflashing them to support higher speeds.

1) Is a 50Hz update speed of my motors too slow for a reasonable PID loop?

2) Can I increase my PWM frequency without reflashing?

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Permalink Reply by Allen Babb on March 19, 2012 at 6:48pm

Some/most ESC's are auto-ranging, which means that they can adjust their frequencies to match whatever reciever they're connected to.

Standard PWM have a 1 to 2ms positive voltage and the rest zero'ed out. Look up "Turbo PWM" for more infos.

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