Pressure regulator with Duex 5
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Hi, I'm trying to control a pressure regulator. It accepts a PWM signal from 0-5v. I've tried to control PWM1-5 on the duex 5 board but haven't had any luck. Can I use the M42 command? What should the Pnnn number be? I have a feeling I am overcomplicating this. Thanks in advance.
more info:FIRMWARE_NAME: RepRapFirmware for Duet 2 WiFi/Ethernet FIRMWARE_VERSION: 2.05.1 ELECTRONICS: Duet Ethernet 1.02 or later + DueX5
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See this post https://forum.duet3d.com/topic/21680/designing-a-pwm-to-analog-mini-board-for-fans/39?_=1615473484496
and perhaps the rest of the tread may provide an alternative
(hm, maybe the problem is the frequency of the duex, not the filtering - still see post for details of the duex limits)
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@jasperhelberg how are you connecting it? Do you realize Duet PWM is on the GND rail? What exact signal your pressure regulator needs?
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@jasperhelberg
Sorry. Now I can remember again. I think the valve needs a variable voltage and not a variable frequency. Forget my previous post.... -
Could be all you need is a pull up resistance on the pwm output, possibly inverting the configuration.
You can test the regulator input to see if it has a pull up or pull down resistor, if not you need to add one to the duet side.
