Halloween is right around the corner, and with COVID-19 still around, it’s important to deliver all that sugary goodness in a safe and socially distant way. Some have suggested using a long section of PVC pipe as a sort of candy slide, and that’s a great idea, but things are always more fun when they’re over-engineered.
One thing I’ve come to learn is that Arduino and Raspberry Pi-powered gadgets make holidays more fun, so I came up with the Arduino-powered contactless candy dispenser.
Functionality
A distance sensor on the front watches for eager hands or a candy bag to move into position at the bottom of the candy chute. Once activated, a short visual countdown begins, letting the hopeful trick-or-treater know she needs to be patient (I didn’t want the machine to activate upon any incursion into its target zone).
After a brief moment a colorful display on the three eight by eight RGB LED matrices the stepper motor activates, turning a cardboard disk that holds eight candy cylinders. When a cylinder is moved over a hole under the disk, the candy falls out into the eager child’s basket.
Since one cylinder is always open on the bottom, the machine can dispense seven “loads” of candy before it needs to be reloaded. I figure that should let us keep up with…
