I have a Big Dome Push Button as the activation switch for a photo booth project I'm working on. The problem is, I don't know how to power the incandescent bulb inside of it. I don't want to do anything complicated, I just want the bulb to always be illuminated.
The button has two pieces: the switch and the bulb. I have the switch successfully hooked up to an Arduino that's controlling the camera, so now all I need to do is power the bulb. The specs say that it's a T-3.75 12VDC@1.2watts incandescent bulb.
Is there some sort of battery I can use? Or do I need a power supply? I have a few 12v power supplies sitting around but how can I tell if they're too much current?
This is probably a really basic question, but I've been googling for an hour now and haven't found anything that makes sense to me yet.
Best Answer
At 1.2W a battery will last a couple of hours, and you'll have to place several in series. IMO the best solution is a 12V wall-wart, those are usually capable of a delivering few Watt.