Does the Potentiometer Value Matter for 'Knob' Example

Other Hardware Motors, Mechanics, Power and CNC
1

Hey guys,

I'm planning on building a mimic robot arm that uses potentiometers on the master arm to control the actual robot arm. My question is that in the Knob program, does the value have to be 10k Ohms? I have a bunch of 1 MOhm potentiometers that I was hoping I could use. If I need to order some 10k potentiometers I would like to know sooner than later.

Thanks,

Nick

2

Above 10K, the voltage thru the analog mux may take longer to settle at the ADC sample & hold cap, making readings seem less accurate as you turn knobs & take readings. If you're buying pots, get a bunch of 1Ks.
50 cents each
http://www.taydaelectronics.com/potentiometer-variable-resistors/rotary-potentiometer/linear.html
Don't forget knobs to dress it up and make it easier to differentiate their functions.

3

10k pots like below are inexpensive on ebay. I got some and they seem to work well with my arduino.

http://www.ebay.com/itm/10x-B10K-Ohm-Linear-Taper-Rotary-Potentiometer-Panel-Pot-15mm-Shaft-Nuts-Washers-/291010300828?hash=item43c190cb9c:g:BEUAAMXQWzNSeSs6

4

Ok, I just ordered a bunch of them. Thank you!