Electronics > Electronics

LED Light

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megaman935:
Ok for a while I completely gave up on robotics. Now I have money and still have some old electronics.
I opened up one of my old GBA battery chargers by madcatz and am wondering whether or not to save the LED light. What can an LED light do to help me in robotics/ how can I use one on a robot? ???

ed1380:
to show status. definitely save it

megaman935:
So it may be able to show, say, battery life or something like that? :-\

ed1380:
it would, but if you do it by brightness it'll be hard to interpret.

maybe if you put a row of leds and more voltage more leds on

TrickyNekro:
You can also use it a switch!!! That's an old trick!!!
You simply light the led and then turn it off and mesure the ADC readings... Should the light being emmited being reflected back to the led the ADC reading would higher than half...
This is due to the ability the Led has to conver light to voltage!!!Don't expect much current only some mA but there 're enought to trigger the ADC!!!

Friendly,
Lefteris, Greece

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