@juergschwarz Ok it works. had to change the position in raspberry.cpp to the end of
void initializehardware()

and the Initial values higher (4000 and 6000)

Thanks

@Martin-Kudláček said in Using PWM Output from Raspberry:

Hello @juergschwarz,
none of the outputs are capable of being drived by PWM signal. The analog output has a filter + amplifier to create smooth(ish) output. This cannot be bypassed.

Other outputs are the relay outputs - and if your frequency is not in tens of seconds (or better in minutes), then I would not advise to use PWM to drive them.

You can try using some I2C expander connected to the external I2C bus.

Best regards,
Martin

Ok i forgot this info: I try to use the raspberry output %QW0 separately to generate this PWM signal and not the A0 from unipi. I my video you can see the output of %QW0.

Ok now i send a pic and a video

And here the video

https://link.eu1.storjshare.io/jwsnlnnvc4qlkvuxqltk7kygvoaq/freigabenallgemein%2FVID_20220117_161837.mp4

As can be seen, the frequency changes rather than the length of the period

Im am using openplc with unipi 1.1 and raspberry 3. The unipi output A0 is only analog 0-10V and not a real digital PWM signal.

To control a servo i need a real digital PWM signal. How is it possible to use this in parallel to unipi?