Build a Binary Clock with Elixir and Nerves

Order a Custom Binary Clock Chip

To control supply chain problems, we took steps beyond the reach of the typical electronics hobbyist. Frank designed a single PCB with all of the LEDs, Raspberry Pi interfaces, and a constant current driver in one small package. While we were at it, we shifted the overall look of the binary clock to provide an interesting twist on our original problem.

Here’s how we’ll present the second iteration of the binary clock. This clock will work on binary representations of decimal digits. That means the largest possible time is 23:59:59. We’ll need six digits to represent that time. The ones digits will need four bits each, and the tens digits will need two bits for the hours and three bits for each of the minutes and ...