PWM digital potmeter

236

04:15:38

WARNING: I'm total noob, just playing around.

Converts Arduino PWM(5V) output to 0-3.3V analog.
Plan is to swap out a potmeter with the transistor in a remote control circuit(which controls a drone so I can control it through the Arduino).

"Usage": Change the width of the digital input.

published 8 years ago

hurz

8 years ago

But measure first the center tip of transmitter pot with a scope, to see if it is really just a voltage divider and not part of an RC oscillator.

FernandoCPF

8 years ago

Lol the Warning 😅

csimpi

8 years ago

Thanks for the tip, actually it goes to a MCU(no text on it) which controls the RF chip so it should be ok.

hurz

8 years ago

Ok, looks like its just a voltage divider and is read out by an ADC. Voltage range for min and max pot position would interesting for you.

csimpi

8 years ago

Not exactly this circuit but it works :) http://everycircuit.com/circuit/5067223950688256

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