16 LED Christmas Tree With Shift Registers And Motion Detection

I’m lucky that Christmas has such a wide array of acceptable aesthetics. There are two things in life that I can cut out with a jigsaw and the ol’ lady still dig it and I […]

Monster Detector

The kid is 4 years old. He’s certain there are monsters under the bed. What do you do? You grab a two peanut cans, some bulk USB cable, a PIR motion sensor, 5 green LEDs, […]