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Power source to leds.
speeder:
Hello. I bought a couple of ultralux buttons and leds (5 V) from Ultimarc, a transparent trackball, and a SMD 3 Watt 5 Volt LED.
But now I have no idea on how to power them, and what electronics I need to make.
BobA:
It the leds are already set for 5V then you probably already have the proper resistor built in or provided with the LED. You do not need a special circuit or electronics just tap the 5V from one of your PC molex drive connectors. The red is 5V and the blk is ground. The yellow is 12V so do not use it.
speeder:
Erm... there are no wires on the led, I am talking about these ones (from Ultimarc): http://www.ultimarc.com/ultralux.html
And one that look like this (the SMD 3 Watt): http://www.led-display.cc/High-Power-LED/1A/LP3W-80-SERIES:-3-watt-high-power-LED.htm << note it look LIKE this one, it is not this one exactly.
Blanka:
Make sure to add a heat sink to a 3W powerled. Otherwise you will get a .
speeder:
That cooper plate: http://blog.agfgames.com/wp-content/uploads/2010/12/PICT0304-1024x768.jpg is sufficient? I never worked with THAT powerful LEDs (and I wonder if it will suffice to light-up the trackball).