Hello all, got a project I'm building with LEDs that I've hit a bit of a conceptual roadblock on.
Backstory:
I'm having to build a lighted disk to put in a halloween mask, and my plan is to fabricate a housing with a ring of 8 LEDs pointing in, give the back wall a reflective paint job, and take a piece of fine grit sandpaper to a heavy plastic lens to frost it. With a diameter of about a soda can, I'm thinking it should provide a pretty good overall glow.
Plans:
I've found some LEDs that appear suitable that run on 2.2v each, with an upper tolerance of 2.4v. If I run four of those in serial, I should be looking at 8.8v required, up to 9.6v tolerated. Thats dead on for a 9v battery, so I shouldn't need any resistors, just straight up wiring. I'll alternate between circuit A and circuit B so that every other light is on the same battery, so in case a bit of wiring breaks I'll still have the other half evenly spaced around the ring for a bit of fault tolerance without complete failure of the piece.
What I Need Help On:
And this is almost embarrassingly simple (I hope). For ease of use, I would like to have one power switch for these. I can do two if it comes to that, but I'd rather have one switch and go. Is there a way to wire both circuits up to a single simple switch (like a regular slider or rocker) that would otherwise keep the two strings of LEDs isolated from each other?
http://www.radioshack.com/product/index.jsp?productId=2062551
Backstory:
I'm having to build a lighted disk to put in a halloween mask, and my plan is to fabricate a housing with a ring of 8 LEDs pointing in, give the back wall a reflective paint job, and take a piece of fine grit sandpaper to a heavy plastic lens to frost it. With a diameter of about a soda can, I'm thinking it should provide a pretty good overall glow.
Plans:
I've found some LEDs that appear suitable that run on 2.2v each, with an upper tolerance of 2.4v. If I run four of those in serial, I should be looking at 8.8v required, up to 9.6v tolerated. Thats dead on for a 9v battery, so I shouldn't need any resistors, just straight up wiring. I'll alternate between circuit A and circuit B so that every other light is on the same battery, so in case a bit of wiring breaks I'll still have the other half evenly spaced around the ring for a bit of fault tolerance without complete failure of the piece.
What I Need Help On:
And this is almost embarrassingly simple (I hope). For ease of use, I would like to have one power switch for these. I can do two if it comes to that, but I'd rather have one switch and go. Is there a way to wire both circuits up to a single simple switch (like a regular slider or rocker) that would otherwise keep the two strings of LEDs isolated from each other?
http://www.radioshack.com/product/index.jsp?productId=2062551