Search the web
Sign In
New User? Sign Up
intellibrain · IntelliBrain Forum
? Already a member? Sign in to Yahoo!

Yahoo! Groups Tips

Did you know...
Show off your group to the world. Share a photo of your group with us.

Best of Y! Groups

   Check them out and nominate your group.
Having problems with message search? Fill out this form to ensure your group is one of the first to be migrated to the new message search system.

Messages

  Messages Help
Advanced
using continuousrotationservo to control an esc   Message List  
Reply | Forward Message #253 of 418 |
Hi,

I've finally gotten back to using my IB to control a TA RC car. The
problem that I am having is that it won't go into reverse. When I use
the RC controller, I have to flip it into reverse twice before it
actually takes but I believe that to be an artifact of the controller
instead of the esc. In any case, I recently got a javelin stamp and used
its servo port to make it go both forward and reverse. When I hooked up
both the IB and the JS to a 'sillicope, I found that the IB has a
slightly shorter period than the JS. This might mean that the esc sees
the pulse as being longer than it really is. When I shortened the pulse
times on the JS, it acted just like the IB does, not going into reverse.
The JS gives you really nuts and bolts access to the servo pwm. Is there
somewhere in the servo code that lets you do the same thing?

Thanks,

wjr

--
William J. Rust, PhD




Sat Mar 29, 2008 5:34 am

wjrust
Offline Offline
Send Email Send Email

Forward
Message #253 of 418 |
Expand Messages Author Sort by Date

Hi, I've finally gotten back to using my IB to control a TA RC car. The problem that I am having is that it won't go into reverse. When I use the RC...
William J. Rust
wjrust
Offline Send Email
Mar 29, 2008
1:08 pm

Hi William, You might try using the Servo interface directly, rather than the ContinuousRotationServo facade. This will allow you to experiment with various...
ridgesoft
Offline Send Email
Mar 29, 2008
2:07 pm

I tried using Servo directly and it didn't work. However, using a pulse output port does work. I got the motors to turn both ways. I should know this but is...
William J. Rust
wjrust
Offline Send Email
Mar 31, 2008
8:41 pm

William, It's preemptive. All you need to do is give the thread higher priority. It isn't a simple matter to expose the lower level servo PWM control. The...
ridgesoft
Offline Send Email
Mar 31, 2008
8:50 pm
Advanced

Copyright © 2009 Yahoo! Inc. All rights reserved.
Privacy Policy - Terms of Service - Guidelines - Help