This is a keypad to start my motorcycle (I kept losing the key). I used a Boarduino, three pushbuttons, three LEDs, and two five-volt relays wth driver transistors (redundant, for safety).
Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground” – Adafruit’s Apps!
Maker Business — Raspberry Pi and CoderDojo Join Forces
Wearables — Gold glow
Electronics — Linear Love
Biohacking — Read Faster Using JETZT or SPEEDREAD
No comments yet.
Sorry, the comment form is closed at this time.