Tim Michals
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Arduino/AutoPilot based on UB32

Posted on January 9, 2010 at 12:02pm 10 Comments

Goals for this project

Have UBW32 on order, the next version has 128K of RAM so... that will be nice

1) UBW32 Software porting

- Use open source 4.4.x gcc compiler http://www.codesourcery.com/

- Gives better code generation then current 3.3.x

- Follow the general setup an ARM process has... (more on this later)

- Support C++, in order to support Wiring as is the AVR supports basic C++, so need to do this...

- FreeRTOS… Continue

Basic understanding of ESC

Posted on December 21, 2009 at 7:19am 13 Comments

I'm trying to find out what is the maximum update rate for a typical ESC is. I saw that most quad copter designed require the ESC update rate to be very high, i.e 100Hz or more.

My understanding a ESC takes a PPM signal from 1ms to 2ms with a 20ms duty cycle. So a max of 50Hz update rate, is that correct? Is there some "play" in the duty cycle maybe max of 10ms. Or I'm way off base? Looking at ESC data sheets seem to be missing this information.

Comment Wall (1 comment)

At 2:41pm on May 1, 2013,
Moderator
Michael Pursifull
said…

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