imsolidstate

LED backlit desk sign

I was messing around a while ago with my CNC and some of the various engraving bits I’ve tried for routing PCB traces. I had a piece of acrylic lying around, so I made myself a sign for my desk at work. I don’t really have that job title, it’s technically “intern” since I’m doing the college thing; but it would be my title if a job title was based on what you did. The description next to my name in the office’s roster is actually “special projects”, but it didn’t sound as interesting.

I used a NUD4001 constant-current LED driver from ON Semiconductor and some OSRAM SideLEDs. The NUD4001 is really quick and easy to implement as it only requires an external resistor to set the current level. The unit is fused, and powered by a 9V AC/DC wall wart. I tried a couple different colors, but this amber looked the best.

As a side note, I really like using ON semiconductor parts. They have excellent datasheets that usually have really good examples.

Tags: Electronics, Engraving