Pedro, I'm not sure if you're still working on this, but I've worked on doing exactly what you are doing. Two things:
1) What sort of power supply are you using? I had to stop using a power supply plugged into the wall because it couldn't keep a stable 5V rail when the servo(s) started moving quickly. The servos will still attempt to work even with less than 5V but performance will suffer and that's one place a saw in intermittent jitter. 2) If you are sleeping your loop() method too long, the servo performance will appear delayed and jitter. For example, with a sleep(50), there will be a noticeable "coarseness" to the servo movement, but sleep(10) should make it smooth again! Hope that helps! Tyler On Thursday, June 26, 2014 9:09:54 PM UTC-5, Pedro Ramon wrote: > > Well, the problem was solved, i just reconnect the wires of the receiver > and the jitter was fixed. I don't know why lol > Is there any advantage in using the buffered Pulse Input for reducing > jitter? > Thank you Ytai > > Em quinta-feira, 26 de junho de 2014 08h36min22s UTC-7, Ytai escreveu: >> >> The PWM output signal does not in itself introduce any (significant) >> jitter. It is either coming from your software or from whatever electronics >> you have past the output. Try to change the software so that it just sends >> out a constant value to figure out where the problem is. >> Is it possible that your PPM decoder sometimes glitches? Are you using >> the buffered version of PulseInput? >> >> >> On Thu, Jun 26, 2014 at 3:53 AM, Pedro Ramon <[email protected]> wrote: >> >>> Hi! >>> I did a android program who uses the pulse input function to get the >>> pulse width from a RC Receiver, and after that, outputs a PWM varying from >>> 0 to 100% depending on the width of the receiver output(its pulse width). >>> The program seems to read the correct pulse width, but the PWM output is >>> jittering a lot, as if it had some noise. >>> This PWM output passes through a RC Filter to be a analog output, but >>> the signal is too coarse, because of the jitter. >>> How can i remove this jitter? >>> Thank you! >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "ioio-users" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To post to this group, send email to [email protected]. >>> Visit this group at http://groups.google.com/group/ioio-users. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- You received this message because you are subscribed to the Google Groups "ioio-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/ioio-users. For more options, visit https://groups.google.com/d/optout.
