Set minimum value?

[deft sand]

One of my pots doesn't go to 0, it has a minimum value of 32 on the serial monitor.
Any way to get deej/the arduino to register it as a 0 value?

[finite mantle]

You could do something a little heavy handedly.

void updateSliderValues() {
  for (int i = 0; i < NUM_SLIDERS; i++) {
     analogSliderValues[i] = analogRead(analogInputs[i]);
     if (analogSliderValues[i] < 32) {
       analogSliderValues[i] = 0;
     }
  }
}

If the read value is 31 or lower, it'll just clamp it at 0

[golden verge]

I'm having a similiar issue, but my sound levels are hitting 0 with about 10% left on the pot's slider. Any way I can change the values to make the bottom of the slider equal 0?

[obtuse oar]

i had the same thing how manny sliders do you have and to what voltage are they connected for me switching from 5 to 3.3 fixed it

[obtuse oar]

^^?

[deft sand]

Thanks I'll take a look when I get home

[deft sand]

2 circular pots, 5v, it's most likely a bad pot, I'll try 3.3v if the other method doesn't work

[finite mantle]

The other option you could do is to map the values.
Let's say you've got some kinda dodgy pots and you only ever get readings on your serial interface between say... 35 - 1012...
You could change this line:
analogSliderValues[i] = analogRead(analogInputs[i]); to analogSliderValues[i] = map(analogRead(analogInputs[i]), 35, 1012, 0, 1023);
What this does is map values between 35 - 1012 and then spread them out evenly across 0 - 1023.
map(value, minFrom, maxFrom, minTo, maxTo)

[deft sand]

So I got home and the pot is now working properly lol, but this is still really useful, if it happens again I can use this 🙂

thanks again

https://tenor.com/view/predator-arnold-schwarzenegger-hand-shake-arms-gif-3468629