When you're riding your bike on the streets, it's important to signal to other vehicles on the road when you're going to turn, change lanes or make any other movements that may put you in harm's way. Unfortunately, few people know hand signals anymore, so Instructables user CTY1995 decided to make his own wearable turn signals that turn on by lifting his arm.
The beauty of these turn signals is that they use a mercury tilt switch and some electroluminescent (EL) panels that light up to show big bright arrows every time he lifts up the arm. Combined with some Velcro and armbands, the panels make a comfortable, wearable gadget that can make your bike ride much safer. Best of all, the tile swith is sensitive enough that you don't have to start waving your arm wildly in the air to turn it on -- just a slight lift will do the trick, and everyone around you will know where you're going.
If you want to make your own, check out the full parts list and walkthrough at the link below. What do you think? How would you improve on the design? Share your thoughts in the comments below.
Automatic Trigger Blink Signal [Instructables]