Servo driven Konfetti Gun with Arduino

thingiverse

This is a modified Konfetti gun that's perfect for surprising friends. It's a DIY project that can be purchased online or in-store and comes with some great features. To get started, remove the 3 screws holding it together and drill two 2.2mm holes through them. Use metric M2 screws to attach the gun to its holder instead. A servo motor is used to pull the trigger, while an Arduino microcontroller is connected to that servo. You can connect various sensors to trigger the gun in different ways. I opted for a sonar sensor, which works reliably between 10cm and 400cm distances. The Servo has a torque rating of 12.39 kg-cm, which is sufficient but could be improved upon. There are three modes available thanks to a built-in DIP switch: Simulation mode: A single LED blinks when the trigger is pulled. Sensor mode: Sensors attached to the gun can trigger a signal. Timer mode: A timer triggers the servo to pull the trigger. You'll find a circuit diagram and an Arduino file included with this project. Note: This is just for fun - don't aim this thing at people!