The code for this how-to is a kind of hello world program using LEDs. The code for this is hosted on Github, you can follow along with the blink.c file for the PIC16F887, PIC16F688, or PIC12F675.

It is a pretty common first project to use an Arduino (or similar) to blink an LED. Which, of course, brings taunts of: you could have used a 555! You can, of course, also use any sort of oscillato… ...

There are plenty of utilities out there to control keyboard LED indicators, but I'm rather interested in controlling the power LED on my headless 1U rackmount. While theoretically there are tons ...