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Author Topic: Incorporating Illuminated Toggle Switches  (Read 779 times)
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i'm building a project using an arduino uno to control MAX/MSP. One of the things that i'm doing is using a series of toggle switches to operate switches and send bangs within MAX. The toggle switches I have are illuminated ones but they need 12v to light them up and the 5v fed from the arduino isn't enough. Is there a way of lighting them without damaging my arduino? If i had a separate 12v supply connected up to the switch would it go straight to ground or would it go through to the arduino digital input pin?



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If you want the lights under the arduino control then you have to have a transistor to switch the 12v supply just like a motor in this:-

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