This was my Halloween display for 2015. It's an Arduino-controlled, motion-sensor-triggered, choose-your-own pepper's ghost experience, with an automatic candy dispensing machine at the end.
Here's the scary version:
Here's the happy version:
You can see the arduino (and a mess of wires) but the candy machine only needs the arduino, the red arcade button, the servo, and some MDF.
The resistance created by the stack of Hershey bars was too much for a regular servo so I bought a Hitec HS-322HD.
To get the most out of it I powered it separately from the Arduino at 6V
The candy machine worked but I'd like to make it more robust. I had to limit the stack to ~10 candy bars to get dependable results. I'd like to make the weight of the stack a non-issue. Maybe a stepper motor w/ big gear teeth could separate/support the stack? Any ideas?