This project is for a RGB LED ring for macro photography or microscopes, to reduce shadows and reflections in the image.
The LED’s are controlled by a rotary switch that selects between different modes of brightness, colour and number of LED’s lit.
Modes:
- Set brightness, default full brightness with white light
- Set Colour
- White
- Warm white
- Cool white
- Blue
- Red
- Green
- Random
- Set number of LED's
- Rotate number of LED's
- Two opposite LED's
- Four opposite LED's
- The project contains 3D model for a small enclosure for the electronics, and an arm intended for mounting on a microscope.
- It uses a WS2812B Module Strip from Aliexpress
- The LED strip is controlled using a Arduino Nano microcontroller.
- The mode selection is shown on a 7-segment display.
The software is written in C and relies on the Adafruit NeoPixel library. New modes of operation can easily be added to the program.
2019 MIT