Piggyaxe-Binary-Timer-Kit-Piggyaxe-Binary Timer-P-A-kit-of-parts-to-build-a-simple-but-very-unusual-&-eye-catching-circuit-a-Binary-Timer-Display-Just-like-a-binary-clock-you-have-to-do-some-mental-maths-to-work-out-how-long-you-are-setting-the-timer-for-P-P-To-make-the-complete-timer-you-will-also-need-a-14M2-Motherboard-kit-70-1063-P-P-The-binary-timer-display-PCB-lends-itself-to-any-projects-that-need-8-or-9-LEDs-&-has-sound-capability-which-is-shared-with-an-analogue-inp