The 3D RGB Flashlight is a simple, 3D-printed DIY project that uses basic electronics with no need for a microcontroller or coding. At the front, it has nine RGB LEDs, but instead of mixing colors, this version allows users to manually choose one color at a time: red, green, or blue.
This flashlight isn’t just a light source—it’s a hands-on learning tool for beginners and hobbyists to explore basic electronics and circuit building. With three separate rocker switches, each one directly powers a single color channel. Press one switch to light up red, another for green, and the third for blue. Only one color can be activated at a time, making it easier to understand how RGB LEDs work in a controlled and straightforward way.
Powered by a single 9V battery, it remains portable and easy to use. The wiring is simple—no regulators, coding, or software needed. The entire body is fully 3D-printed, with neat slots for the LEDs, switches, and wiring. This keeps the design organized and sturdy, while showcasing the power of additive manufacturing.
Perfect for classrooms, workshops, or personal projects, this flashlight offers an accessible entry point into the world of DIY electronics.
Components:
- LED 5MM RGB Clear
- Switch Rocker
- 9V Alkaline Battery
- Battery 9V Buckle
- Multifunctional Wire Stripper
- Third Hand with Magnifying Glass Tool
- Soldering Iron
- Soldering Iron Stand
- Solder Lead 0.8mm Diameter
- Jumper Wires
Connection:
The diagram shows a simple circuit using nine common-cathode RGB LEDs controlled by three switches for red, green, and blue channels. A 9V battery supplies power, with resistors limiting current to each color line. Pressing a switch lights up all LEDs of that color, allowing easy mixing for different effects.
