2 layers71 × 73 mm

Alarm
bbokser/persuasive_waker
An open source hardware alarm clock that can't be snoozed or turned off.
71 parts3MIT
Boards in 2 GitHub repositories, designed in KiCad, that use the WP424IDT by Kingbright (-40℃~+85℃ 10mA 140° 2.3V 3mm cylindrical lamp head 617nm 627nm 6mcd 75mW Frosted Red Lens Red 插件,D=3mm LED Indication - Discrete ROHS). See how each wires it, with its parts, size, README and files; the WP424IDT’s symbol, footprint and pinout are on its own page.