Measuring motor speed

[Ether]

Originally Posted by pmangels17

I recommend gearing down the RPM as much as possible.

Originally Posted by Alchemy99

Why not just gear the encoder down... the shooter is spinning at 20k, gear it so the encoder is spinning at 5k. 4:1 ratio.

Not recommended. Has the potential to introduce a lot of noise, which could make speed control more difficult.

If your speeds are so high that an encoder will exceed its mechanical or electrical limits, or will exceed the FPGA's maximum pulse detection rate, then consider a one-pulse-per-rev solution.