Code for Multi turn Pot

[rc_fan04]

@johnwasser
Thanks
I will try this code.

[lastchancename]

I’m wondering if the OP is using a ‘continuous rotation’ pot, rather than a ‘multi turn’ pot.

This might be tricking him as to what he expects ??

[alto777]

I hope not after the trouble @rc_fan04 went to in #10 to ‘splain what s/he is talking about.

So the why is a mystery.

a7

[J-M-L]

@lastchancename

continuous rotation pot

OP said in his first post:

@rc_fan04

The potentiometer I used is 10k 3590s.

➜ that's the datasheet (3600° = 10 turn)
https://www.mouser.fr/datasheet/2/54/3590-776468.pdf

[lastchancename]

aah k, I missed that. thanks

I thought it may have been 360, then jump back to zero… odd, but used in some industrial equipment !

[J-M-L]

OP Said

@rc_fan04

The potentiometer I used is 10k 3590s. I want to please change in this code for multiturn pot I would be very happy if he shared his opinion with me. Thanks in advance.

the thing is there is nothing to change in the code. You read the pot, you get a value, you map it

      pot = analogRead(A0);
      Input1 = map(pot,0,1023,-255,255);

but because it's 10 turns to get the full range, the user has to do a lot of turning to get from 0 to 1023...

What we need to know to answer is what behaviour OP would want to see

[johnwasser]

@rc_fan04

Cause this normal pot has less movement you can see in the pictures below.

An alternative to using a 10-turn pot is to use different size pulleys between the motor and the pot. If a pot is good for 270° and you want a servo that goes 3600° (10 turns) you could have pulleys with a 1:13.33 ratio.

Likewise, if you only need 5 turns with your 10-turn pot you could use a 2:1 pulley ratio to use the full range of your pot over 5 turns.

[SteveMann]

I am still curious. Why do you want to use a multi-turn pot?

[J-M-L]

Agreed - that’s the key question. It gives precision but is a pain as a quick human interface