Test project for tinkering a uniform broadband LED light source. This was my first attempt with a metal core PCB. Sparkfun LED driver boards were used, with a 5V power adapter and arduino DAC control. Frankly, everything worked out surprisingly well. I expected more problems at every stage. Unfortunately, the “goal” was not reached in terms of a broadband spectrum: the 475nm LED emitted at 495nm instead. So this should work, with a different LED. Maybe there’ll be an upgraded version.
layout, schematic
printed metal PCB, assembled with 4 LEDs
mounted lenses, 10° viewing angle
side view with driver board
backside, driver board and arduino controller
functional test, 2 LEDs
functional test, 2 LEDs
light spectrum of white LED, data sheet and reality
light spectrum of 475nm LED, data sheet and reality
