On Thu, Aug 31, 2017 at 3:13 PM, <[email protected]> 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 without any device attached (no servo ubec > running) and no pwm wire plugged into the beaglebone. But still had the > same issue. > OK--so now can you test by losing the open/close ,disconnecting the XBee and jumpering TX and RX and writing some simple text out and checking that you receive it back correctly, while running PWM. If you see errors, then maybe beaglebone is sensitive to crosstalk; if you don't then the crosstalk must be in the XBee. BTW, suppying the servo from a separate power supply might not fully prevent interference--it could be kickback from driving the servo.
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