Daniel Ho

Amor Fati

A Toronto-based management consultant who spends too much time thinking about coffee, riding around on two wheels, taking photographs, reading books, eating fried chicken, and generally tinkering.

LED Light Conversion for Dynamo Bicycle Headlight



OK, so this SHOULD work. I have a Pashley Roadster Sovereign bicycle that comes with a dynamo powered headlight. While it is very convenient that I don't have to change or charge the batteries, it is 2013 and we're used the pretty bright LED headlamps on bicycles.

This lead me to start surfing for a LED light conversion that will fit and just work. For sure, I thought the Dutch would have worked this one out already. However, there doesn't seem to be a ready made kit for sale. Let me know if you've seen anything like this.

So, it looks like I'll have to sketch out how to make my own and power up the soldering station. If you're actually interested in how this is going to work, you can follow my nerdiness on MyGeekJournal in a few days.

I think it will be a simple bridge rectifier circuit to turn the AC from the dynamo into DC suitable for an LED module. I'll have to smooth out the power a bit, make sure it doesn't go over voltage and kill the module, and maybe put in a "stand light" feature so the light stays on for a bit even while I'm stopped at a light. Currently, as soon as I stop, the front lights go dark...sub-optimal!