Minimum Read Frequency for Rotary Encoder


hi, working on project on arduino uno planning use rotary encoder. plan have non-time critical main loop , set timer interrupt handle reading encoder.

is there reference frequency @ need timer interrupt called relative ppr of encoder in order have read accurately?

thanks!

what encoder for? knob turn hand @ 5rpm or 1024-count encoder on motor shaft spinning 50,000rpm?

if used timer, you'd want read encoder @ least 4 times faster ever change 1 bit. knob turned hand, big fractions of second, timer unnecessary. shaft turning fast waste of time - use pin interrupt , read encoder when changes.


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