This extremely versatile gumball machine was an idea of the creator of the box, Logan, who originally had it working with a sensor. We changed the mechanicals so that the Servo was run by a WiFi-connected Particle Photon. Very neat! This gumball machine can be texted "Knock" and a gumball will be dispensed very neatly into a small cardboard container along with the shining of a green LED light. If anything other than "Knock" is texted, a red LED will light, and the servo will not move.
Text Machine, Get Gumball
This project describes how to build an Arduino-based, text-controlled gum dispenser. Idea from Make Maagazine "Secret Knock Gumball Machine"
BeginnerShowcase (no instructions)5 hours675