Edison Phonograph Prop

This phonograph was created as a prop for an escape room puzzle. It does not make contact with the cylinder and has no drive rod so the arm does not progress down the cylinder.

The cylinder does spin.

This was modelled after the Edison Phonograph but I took some liberties.

The box was laser cut. The interior of the box contains a pulley to drive the cylinder and a photo interrupter to let a microcontroller detect when the cylinder is rotated.

In my setup, the cylinders have RFID tags in them and the reader is in the box as well. When the cylinder is rotated the RFID tag is read and the appropriate audio for that cylinder is played over speakers.

The shafts are 1/4" bolts. The arm is also attached with a 1/4" bolt through the box with a washer. The arms have 608 bearings pushed into them. The cones are connected to the arms with a short 1/4" bolt. The cone on the rotating arm also has a spring on its shaft.
The idea is that the arm is unlatched, opened, and a cylinder is