Emily VelascoDoes anyone on here know if the capacitor-resistor combo attached to a pwm output pin of an Arduino gives a decent analog output?
Rue Mohr@MLE_online depends on the purpose... If you want is to be smooth it cant change fast.
@RueNahcMohr how fast or slow?
@MLE_online thats set by the RC combination you use. Are you gonna tell what you want to use it for?
poleguy looking for lost toolsIf the pwm is at 100kHz and you are trying to generate a sub 100hz tone, it might be fine. If you want full bandwidth audio to 20kHz, nope.
https://www.allaboutcircuits.com/technical-articles/low-pass-filter-a-pwm-signal-into-an-analog-voltage/
additionally, if you need steady more than resolution, an R-2R DAC is easy to make.
