In the Maker Shed: Bulbdial Clock kit
The Bulbdial Clock kit works like an indoor sundial, but with three shadows of different length. You tell the time just like you do on a normal clock, by reading the positions of the hour, minute, and second hands. The kit comes complete with three custom circuit boards, 72 ultrabright LEDs, pre-programmed ATmega168 microcontroller with […]