I'm planning to remove the potentiometer of speed controller and replace it with digital potentiometer module and connect it with Arduino will there be no problem on the circuit?
please see below component
thank you
Is the digital potentiometer the same resistance as the real potentiometer?
What are the voltages you measure at the ends of the real potentiometer with respect to ground on the speed controller?
If the value is the same, and the voltages at the ends of the real pot do not exceed the specified limits of the digital pot, then you probably OK.
a7
The value of digital potentiometer and the analog potentiometer are both 100k ohm, for the voltage I'm not yet sure I'll check first
thank you for the reply
Since the pot probably just produces a variable voltage you could just generate that from an Arduino pwm output with an rc smoothing circuit. Cheaper.
Last one I looked at turned out to be the duty cycle pot in a '555 multivibrator, so maybe not.
a7
Might help us if you can tell us why you wish to do this? Is it educational or does it have a purpose?
The digital 'pot' needs a digital controller (Arduino) and at some place you will need to adjust it, I'm assuming... so you need a pot or digital input device...
Are you sure you wish to complicate things this much...?
What if @verlyn just wants the Arduino s/he mentioned using to have control of the device attached?
This could entirely be a matter of the code or algorithm and not directly, or even indirectly, relayed to or dependent on any external input to the Arduino.
I agree we could know more…
a7
Or, connect the Arduino to a motor driver module or shield.
1 Like
Indeed!
This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.