Submitted 13 hours ago by JayleneSlide@lemmy.world to askelectronics@discuss.tchncs.de
https://lemmy.world/pictrs/image/6b2336aa-7c0f-466c-8889-20bd1a150d0c.jpeg
I have a Roxim Z3EK bicycle headlight. This light is supposed to have a low and high beam function, but I can only get the low beam to work. So far, I have tried:
I emailed the manufacturer asking for a wiring diagram, but no response.
I appreciate any guidance y’all might have. Thanks!
In my opinion bicycles should not have a high beam, but here goes:
Look inside, do any components look fried?
Can you get the led to light by applying the a low voltage with a current limiting resistor directly to it? If I don’t know what to do with the circuit I would probably go outwards from the desired results.
In my opinion bicycles should not have a high beam
This is StVZO-compliant light, i.e. has a sharp beam cutoff.
Look inside, do any components look fried?
Tracing the circuit was my first thought. It would be difficult to open the housing non-destructively. Even if I could open the housing, getting it back together and restoring its IP rating would be sloppy at best.
Can you get the led to light by applying the a low voltage with a current limiting resistor directly to it?
Yes, the low beam works starting at ~7V with the negative and positive supply attached as pictured.
Xbeam@lemmy.world 10 hours ago
It’s possible the green is a data wire. The light might start in low by default and be looking for a change state to switch to high.
JayleneSlide@lemmy.world 9 hours ago
Oh! That is an angle I didn’t consider. I’ll start looking into possible signals I can send. Thanks!