A potentiometer (or ‘variable resistor’) has a spindle that can be moved to change the resistance value of the potentiometer. This can be used to measure rotational or linear movement.
An appropriate value for a PICAXE system is 10k (do not use 100k devices).
This program will read a potentiometer (wiper connected to analogue input pin C.0, the ends of the potentiometer resistor between V+ and 0V) and report the value read in the 'b1' variable.
main: readadc C.0, b1 ; Read the potentiometer value debug ; Display the value pause 1000 ; Wait a while goto main ; RepeatCopy Code Submit an Example
A potentiometer may be connected to the generic terminal block create module.
| Description | Code | Qty | |
|---|---|---|---|
| 1k linear potentiometer | RES020 | 1 | Buy Now |
| 10k linear potentiometer | RES021 | 1 | Buy Now |
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