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Originally Posted by esali1987
Anyone have a recommendation of which encoder would be good to use for the board to add on if I dont already have one? Thanks
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I don't have a recommendation for you. It can get pricey. A through-shaft encoder with 150 PPR or more will start at $500 new.
60 pulses per revolution is enough for good control. It boils down to where you have enough space to put it, what product you can find that will fit, and how you can mount the unit in that space.
There are through-shaft encoders, where the motor shaft sticks through the encoder disc and the rest of the encoder is sort of supported by that shaft.
There are magnets that you can super-glue to the end of an exposed shaft and a small PC board with a chip mounted on it does the magnet sensing and gives you pulses.
And there are ... many ways .. of putting a toothed gear of some sort onto the motor shaft, or monitoring a driven shaft inside the gearbox, or even driving a pulley or gear specifically for the encoder .... all of them give you pulses that work OK for control but don't show you which direction the motor is going. 12-24V DC Inductive switches are used in this last case. Depending on your RPM and how many pulses per revolution you want, they can start at $50 ... if you can fit them where they need to go.