multiple 5v pwm outputs on duet 3 mini 5+
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Dear all,
A small question here, I need two 5v pwm gcode controlled outputs to drive some external circuit but I noticed on the pinout for the duet 3 mini 5+ it only has one (for laser control). What would therefore be the best option to accomplish this or are there some pins that could also be utilized?
I know there are multiple 3v outputs that I could use but for the device to be controlled, it would mean that I can not drive it at full power as it desires a 0 to 5v input.
I'm therefore thinking to perhaps use an arduino nano to read two 3v outputs from the duet and scale that to two 5v pwm outputs of the arduino, however, this does seem a bit finicky for such a simple task therefore i would like to know if somebody has a better alternative..?
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@Tricep-terry No, there aren't any other 5V PWM pins on the Mini 5+.
However, if you have a spare fan or heater output, you can use the MOSFET (which are on the ground side) to control a 5V input and make it a PWM signal, with the addition of a 1kohm pullup resistor. See https://forum.duet3d.com/post/118283 (thanks again @DIY-O-Sphere )
This is used to control a servo, but it can be used for any PWM output.Ian
