The PCB is single-sided helping make this a great project for someone trying out surface mount component soldering for the first time. Or if you want something a little more free-formed try out ...

I designed the small pcb to use the led in this jumper and also to solder pin headers in it for use on breadboards and also as a small strip of 5 LEDs to be used in drones.

You see, the original clock project was mine — one I did over a weekend a long time ago, as evidenced by the “2/13/2000” date on the PCB — and I was quite honored that [Paul] would choose ...