Busy Loo Indicator PCB (March 2022)

PCB for the Busy Loo Indicator project in the March 2022 issues of PE.

Please note this PCB is supplied without components.

OK, it’s a bit tongue-in-cheek . . . but it could have other, more serious, uses. The Busy Loo Warning flashes a bright LED light on the door when you, ahem, don’t want someone barging in. When you leave and open the door the light goes out! It’s a simple idea with a real simple circuit – but it makes a superb beginner’s project.