An encoder lets you count - and as long as you have a proper zero and don't miss counts, you know the absolute position.
If you want to go the analog route, you may also use an external ADC such as the ADS1115 or ADS1015.
An encoder lets you count - and as long as you have a proper zero and don't miss counts, you know the absolute position.
If you want to go the analog route, you may also use an external ADC such as the ADS1115 or ADS1015.