Debouncing rotary encoder

n5ib_2
 

ALPS, a maker of rotary encoders, recommends 10K pullup to Vcc, then 10K in series with 0.01 uF to ground.
The internal pullup in the ATMega is loosely specified - somewhere in the tens of K, max 50K

On our "RadI2Cino" we provided pads for the RC series pair to ground, but not for any additional external pullup.

N5IB

Join BITX20@groups.io to automatically receive all group messages.