This DIY Bike Safety Light Never Needs Batteries, It’s Powered by You
We’ve shared many ways to stay safe and spotted while cycling, but if you’re looking for something automatic that you create once and last forever, this DIY emergency light is induction powered, mounted on the rear wheel and stays on while you keep pedaling. Plus, it’s easy to build.
Of course, you will need suitable components, including some magnets, spoke mounts for the luminaire itself, an LED, and some electrical components (diodes, resistors, etc.) that you can purchase from an electronics or hobby store (or just buy User Instructablestom4zs has 3D printed the knitting needles online and evenincluded schematics to print them yourself , but you can install your own mount if youwant.Full parts list can also be found at the link below.
Eventually, when you put it all together, you will notice that there are no batteries and no on / off switches. The entire setup is smart enough to know that you are pedaling and uses the energy you pedal to power the LED. Plus, when you have all the components, putting everything together is really as easy as soldering a few wires and then screwing them to your bike. Check out the full guide below – it’s just a few steps.
Bicycle Wheel Safety Induction Light | Instructables