Introduction: Braking Activated Rear Bike Light
I got bored and decided to liberate my old dynamo light,
so I gutted it, and wired the bulb to 3 AAA batteries and lead 2 leads out the side of the light casing,
I then ran the wires to either side of the disc caliper, for the arm that WOULDN'T be moving i used a bit of metal which the cable tensioner... tensioned and on the arm that moved i just taped some tin foil to the end (same for end of other arm also)
and veola! a craply made light (does work and is kind of rain proof as havn't had any problems yet)
slight warning, if you do attempt this i had to make little washers out of the tape as i didnt have rubber ones, as it makes the whole brake live
5 Comments
6 years ago
Excellent sir. Well done. I have been trying to do similar with hydraulic brakes where there is no useful physical movement accessible at the brake from which to derive the switching. I have scoured the net looking for suitable sub-miniature hydraulic pressure switch to no avail. All far too big. I am waiting for inspiration. In the meantime I have no stop-light. There are tiny cheap accelerometer chips available to trigger the light so this is what I am looking at now.
8 years ago on Introduction
how does it activate when i hit brake ? can you please put more images or source or email me at uzzytech@ gmail.com i really love this one!!!
9 years ago on Introduction
i was thinking about making one of these but i made a turn signal head and tail light in one
Reply 9 years ago on Introduction
how did you manage that - since this i've improved it with small cut sheets of conductive metal
Reply 9 years ago on Introduction
the setup is inside of two project boxes with three switches between them