Rotary encoder & mount for Johnson motor

This encoder system is based on a motor I found at a surplus outlet and bought because it had a GT-2 pulley. It appears to be a 24 volt DC motor which happens to be good for my servo controller. Luckily the motor had a shaft on both ends which allows the encoder to push on directly to the 3mm shaft. There was no mounting attachments on the back of the motor and that's why the encoder mount pushes over the motor housing. I sanded the inside of the motor mounting surface for a better fit and used a couple drops of gorilla glue to secure it.

The optical system uses standard 5mm LED style transmitters and SFH203 visible light photodiode receivers. Some sanding or drilling may be required for a tight press fit.

The square blocks tie the upper and lower sections together. glue or a fastener has not been required here. (see photos)

https://vimeo.com/260812218

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/7IT4Iy4TMKx