Blink / Steady - The Bike Light You've Been Waiting For
Machined from solid aluminum, the Blink/Steady bike light turns on automatically and shuts off when you're not riding. There’s no need to remove it when you lock up because it’s secured by your seatpost.
The Blink / Steady bike light uses an accelerometer that knows when you're moving, and a light sensor that knows when it's dark enough to turn on. After you lock up your bike, it turns off after 30 seconds. No buttons, you'll never have to think about your bike light again.
No more clicking through blink patterns because Blink / Steady has two dead simple, but equally effective options. Blink / Steady operates in Blink Mode if installed one way; flip it over and it works in Steady Mode, holding a bright, but evenly distributed light. Using its accelerometer, it knows which way is down.
(back this project by Benjamin Cohen)