Sometimes you just want to make something, and not spend any money doing it. That’s what [Evan] had in mind when setting out to make this cool RGB LED binary Clock.
The project box is made from scrap pieces of balsa wood, with the front being a scrap of acrylic. Multiple layers of the balsa wood were glued up to thickness and drilled to hold the LED’s, some paper was added on top then the acrylic to give everything a frosty diffused look.
LED’s are controlled by the good ‘ol 74HC595 serial to parallel shift register, and a ATTiny84 micro all set on scraps of perf board [Evan] had kicking around. Time is kept by an off the shelf RTC module and everything is point to point wired together .
Once the glue dried and a lid added, [Evan] has a colorful and fun looking 4 bit per digit binary clock that always takes us a few moments to read.