Bike light made from a scrolling convention badge and a old broken bike light.
pretty simple stuff.

Step 1: A Scrolling Badge

This little scrolling badge is for geeky convention goers. i got it from ebay a few years ago.

I would just use this the way it is, but the battery compartment is on the bottom and could fall out and get lost from going over a bump.

Step 2: Take Apart the Badge

Remove the tiny screws from the badge. take out the board.

Step 3:

Take all the guts and metal battery clips out of the bike light.

Step 4: Make Everything Fit

I placed the circuit board on the lens. then drilled a hole to match where the on/off switch is.
I had some plastic circuit board standoffs that were the right size after i cut part of it off.

the switch works well, you have to open the light to program the message or change the battery.