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
7 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.
10 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!!!
10 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 10 years ago on Introduction
how did you manage that - since this i've improved it with small cut sheets of conductive metal
Reply 10 years ago on Introduction
the setup is inside of two project boxes with three switches between them