.:madworm:.'s photos

Too bad these things always fail shorted.

I think I will never ever again use LEDs of this class without a _real_ constant current source. Just using resistors doesn't cut it anymore. Especially when one of the LEDs fails shorted... I was thinking about using a 2N2222 for that purpose, but didn't. Silly me

I think I will never ever again use LEDs of this class without a _real_ constant current source. Just using resistors doesn't cut it anymore. Especially when one of the LEDs fails shorted... I was thinking about using a 2N2222 for that purpose, but didn't. Silly me

All the other parts are way too cheap to waste solder wick for them.

A very useful tool this nibbler. LORD NIBBLER ;-)

A very useful tool this nibbler. LORD NIBBLER ;-)

Oh, btw: I don't smoke! The lighter is for shrinking tube only.

The LEDs are actually cold white, but my camera is confused.

I drilled the hole by hand, literally. My rechargeable drill was dead, so I just grabbed the drill and twisted it. I love it!

The diode is used to drop the voltage a bit. I could have used one with 0.5V, but this one was better than nothing. Ideally I would have needed a 3Ohm resistor - which I didn't have. 0.22Ohm would have been no problem... The 5 white LEDs are wired in series and the rectified voltage of the lamp is suitable for not overdriving them. I probably should have built a constant current source, but I lack the proper resistor values... transistors: yes, useful low valued resistors: no. And yes, I know about wiring them up in parallel.