[beagleboard] Re: UART PWM Interference

2017-09-04 Thread ojc234
Yes, I started off using one of those and then changed to USB power - it didn't have an affect on the error rate. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from

Re: [beagleboard] Re: UART PWM Interference

2017-09-04 Thread jay
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Re: [beagleboard] Re: UART PWM Interference

2017-09-04 Thread ojc234
See the two pictures below - I have tried to simplify things a few times - but nothing seems to change the high error rate, although it might have decreased a bit - a few times it has been ~50% (That was when I was trying to run my Power HD MG1235 servo on a 7.2V UBEC) The Xbee and PWM are

Re: [beagleboard] Re: UART PWM Interference

2017-09-03 Thread Przemek Klosowski
Could you post a picture or drawing of your physical layout? I think the evidence points to interference from the PWM circuit into the XBee. HOw close physically are they? On Fri, Sep 1, 2017 at 9:18 PM, wrote: > Just tried adding the 1uF decoupling capacitor in parallel with

Re: [beagleboard] Re: UART PWM Interference

2017-09-02 Thread ojc234
Just tried adding the 1uF decoupling capacitor in parallel with the existing 0.1uF capacitor - it didn't decrease the high error rate. On Saturday, September 2, 2017 at 12:08:00 PM UTC+12, ojc...@gmail.com wrote: > > So tested all of that - see table below > The servo power supply is a QM12V5A

Re: [beagleboard] Re: UART PWM Interference

2017-09-01 Thread ojc234
So tested all of that - see table below The servo power supply is a QM12V5A but as seen below - even when this is not active, there is still a high error rate. Also, I am not opening and closing the

Re: [beagleboard] Re: UART PWM Interference

2017-08-31 Thread Przemek Klosowski
On Thu, Aug 31, 2017 at 3:13 PM, wrote: > Errors : yes garbage characters on the receiver side > > Cross-talk : so I have had a servo motor (powered from it's own ubec) > plugged in, however I thought that the ubec noise might be interfering, so > I tried running the PWM signal

[beagleboard] Re: UART PWM Interference

2017-08-31 Thread ojc234
Errors : yes garbage characters on the receiver side Cross-talk : so I have had a servo motor (powered from it's own ubec) plugged in, however I thought that the ubec noise might be interfering, so I tried running the PWM signal without any device attached (no servo ubec running) and no pwm