ESC for quadricopter

[salviador]

Hi Tom , sorry , another question/doubt.
I must choose specific ESC for quadricopter?
Because, if control of the pid has a refresh rate up to 200 Hz and the standard ESC has a input control equal to servo refresh 20mS (50Hz) with impulse 1~2mS.
Are there possible problems of control? the out of pid (200Hz rate) is too fast for esc.?

[Tom]

Most ESC's support this. Most people use "plush" or similar ESC's from hobbyking. They are cheap and work good.

TOm

[lukasz]

Also there are ESC that you can reprogram to 400MHz and use fast pwm.

This is what I've done with Tower Pro 18A ESC.

Here is the link to a list of ESC that can be reprogrammed:
https://docs.google.com/spreadsheet/pub ... alse&gid=0

Here is the link where you can download fast PWM firmware:
https://github.com/sim-/tgy/downloads

Here is the link to tutorial:
http://wiki.openpilot.org/display/Doc/F ... structions

[Tom]

This won't be necessary as the gluonpilot currently works at max 250Hz in quadrocopter mode