Nerf Gun Ammo Counter & Range Finder

water-gun

From a toy to a smart device.

This project shows how an ordinary plastic Nerf blaster can be turned into a real hardwar miracle. The author equipped it with an ammo counter, range-finder and OLED display, all based on affordable components like an Arduino and an ultrasonic sensor.

What’s implemented:

  • Shot counter – automatically tracks the amount of “ammo” after each shot.
  • Ultrasonic rangefinder – measures the distance to the target in real time.
  • OLED display – displays info: ammo, distance, firing mode.
  • Control buttons and mode settings (e.g. manual counter reset or calibration).
  • Battery powered + minimal wiring inside the case.

Technical details:

  • Platform: Arduino Nano / Pro Mini;
  • Sensors: HC-SR04 (rangefinder), buttons and infrared sensors;
  • Screen: 0.96″ OLED I2C;
  • Mounting: 3D printed parts and blaster body modifications;
  • Programming: simple C++ logic for Arduino IDE.

How the project is useful:

This upgrade makes playing with Nerf blasters even more fun, especially for kids and teens. It’s also a cool way to learn basic electronics, soldering, coding, and data visualization. A perfect start for those just entering the world of DIY gadgets.

Who will like it:

  • High school and college students with a passion for tech;
  • Parents looking for educational STEM projects;
  • Fans of Nerf guns and customization;
  • To anyone who wants to modernize everyday items in a fun and clever way.

Why on TorcA314:

This project is a classic example of DIY engineering with humor, benefit and practice. It shows how a simple idea can grow into a real mini-product with smart weapon elements. This is the kind of thing that inspires creativity and the study of electronics.