Electronic Busy Board Is Fun For Kids and Hackers

A hardware hacker built a scratch-designed electronic busy board toy for his nephew, combining hardware and firmware work. The write-up covers keeping the PCB to two layers, the logic behind LED multiplexing, and how timers and interrupts in the code maximize battery life for the PIC18F67K40 microcontroller running on three AAA batteries.

Source: https://hackaday.com/2026/10/02/electronic-busy-board-is-fun-for-kids-and-hackers. 8 Sync News only summarizes and links out; content copyright belongs to the authors and original sources.