In this project I added two color backlight with separated control to vintage analog meter.
Blue light serves for improving visibility of dial in the dark and for aesthetic purpose.
Red light can be used as a warning signal, to indicate that measured value has reached predefined limit.
Blue and red LED circuits are powered by two separated 5V sources.
|DIY multicolor backlight for analog meter.|
This project is very simple, cheap and novice friendly but may result in quite impressive mod of some piece of obsolete hardware.
Parts and materials used in project:
- ancient analog voltmeter;
- 3 mm red and 10 mm blue LEDs;
- piece of acrylic.