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Step 2Schematic
Here's a diagram of the circuit you'll need to build. It's basically a transformer to power the 9V relays. Then a microcontroller (later steps) will send a signal to the MOSFETS which will then activate the relays which will turn the 110V power on to the individual plugs.
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May 22, 2010. 6:42 PMfujosamu
says:
what mosfet should i use?
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Apr 10, 2009. 8:07 PMtony112
says:
AWESOME DISPLAY.....It gives me many, many, many ideas this coming fall!!....thanks!. I had a couple questions, what type of BASIC chip did you use. I am new into PIC. I haven't seen 16 output chips. I am currently using an 8 output 16F84 chip. Any ideas how to multiplex 8 more onto the same chip?. Unfortunately Charlieplexing wouldn't work in this case.......... also, have you had any problems with your relays turning on and off several times a minute/second. Is there any problems of corrosion or arking. Would it be better too use solid state relays instead?? (I know they are terribly expensive though) Please advise, Thanks again for your fantastic idea!!! Take care, Tony
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Apr 11, 2009. 5:17 PMprabbit22m (author)
says:
It's the Basic Stamp 2e By Parallax. I think they sell a 32 output chip too. No I didn't have any problems with the relays. I think the low current keeps them from arcing. SSR's would definately be a better way to go. I would have done that if it weren't for cost. If you search youtube for my screen name, prabbit22m, you'll find one called christmas light CAPABILITIES. You'll see exactly how fast those relays can work. It's plenty fast for any music. The only thing they wouldn't work for is dimming by frequency. -Peter
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