I am not an electronics guru, so bare with me. If I am correct, there is a 5V limit on the analog pin. It would be nice if maybe 20V could be used. Any idea with what components you could create some kind of reference voltage. To make this more clear is, if the max voltage that can be applied is 20V, then I would like to have this converted to 5 V, 18V is then 4.5V (18*5/20), 12V is then 3V.
5V limit?
I am not an electronics guru, so bare with me. If I am correct, there is a 5V limit on the analog pin. It would be nice if maybe 20V could be used. Any idea with what components you could create some kind of reference voltage. To make this more clear is, if the max voltage that can be applied is 20V, then I would like to have this converted to 5 V, 18V is then 4.5V (18*5/20), 12V is then 3V.
Would be nice if this is doable.