Raspberry Pi Powers Autonomous Nerf Gun Turret

A DIY guide shows how to build an autonomous motion-tracking airsoft or Nerf gun turret using a Raspberry Pi 3 and OpenCV. The project describes two operation modes—interactive remote control with live video and autonomous motion detection—and details mechanical assembly, stepper motor hat wiring, a relay on GPIO pin 22, 3D-printed flanged parts, and battery-powered electronics. The build targets hobbyist security and garden pest control.
Key Points
- 1Implements motion tracking using Raspberry Pi 3, OpenCV, a webcam, and stepper motors.
- 2Enables low-cost autonomous targeting for pest control or remote monitoring without human presence.
- 3Requires basic woodworking, soldering, and Raspberry Pi GPIO wiring skills; suitable for hobbyist builders.
Scoring Rationale
Practical, directly usable build instructions increase actionability, but the project is niche hobbyist work with limited novelty.
Sources
Public references used for this report.
Practice interview problems based on real data
1,625 SQL & Python problems across 15 industry datasets — the exact type of data you work with.
Try 250 free problems