Ponytrope modified for use with Stepper motor

thingiverse

I used a stepper instead of a dc motor just for simplicity. I needed to get it built quickly (took a day). Since the stepper timing was known I just used the hall effect sensor to sync up with the initial horse. I designed a adapter to mount the hub to the motor and a new hall effect bracket and used a couple stepper motor mounts from another project. Used a ramps and mega board for the controller and a 10watt led driven from the heater driver with a hefty resistor and heatsink in series. Instructions The coupler adapt the hub to a 5mm nema 17 stepper. Print two of the nema 17 mounts to mount the motor to a base. The hall effect mount is designed to mount to two screws on top of the motor above the motor mounts and the opening is sized for a standard 4 pin end stop type connector which I used to hold a three pin hall effect sensor and bent it over. Since a stepper is used the timing is known so the sensor is used to get the initial sync after coming up to speed. I am still modifying the code to allow for adjusting the speed in real time. I had it hard coded to 1.2 RPS. Plans for making a nice smoked round plexiglass display case in the near future.