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WARNING: DO NOT USE OR CONNECT WALL(120 or 240 volt) POWERED LIGHTS (or anything that connects to a wall socket or the like.) WITH THIS SET UP. There are imminent Fire and death hazards if you do. ONLY USE 3 VOLT DC BATTERY POWERED LIGHTS. Use common sense and safety. I will not be responsible for any issues. Please get an expert electrical/electronics technician to help if you are not sure.
How I used a computer with a parallel port to control battery powered xmas lights.
>>> Adding opto-isolation and modified battery set up, so an updated circuit is coming soon!
How I used a computer with a parallel port to control battery powered xmas lights.
>>> Adding opto-isolation and modified battery set up, so an updated circuit is coming soon!
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Signing UpStep 1What's needed:
Parts needed
8 - Strings of battery operated lights each powered by two "C" cells. (mine were from the Dollar store for a dollar each!)
8 - 2n3904 transistors (available from better electronics stores).
1 - Db25 male crimp sub connector 276-1429 or (substitute with http://www.instructables.com/id/Mini-parallel-port-break-out-cable/ or http://www.instructables.com/id/No-solder-parallel-port-break-out/ ).
1 - Db25 cover would be nice.
wire
Low wattage solder
Electrical tape
Tools:
Low wattage soldering pen
Wire cutters
8 - Strings of battery operated lights each powered by two "C" cells. (mine were from the Dollar store for a dollar each!)
8 - 2n3904 transistors (available from better electronics stores).
1 - Db25 male crimp sub connector 276-1429 or (substitute with http://www.instructables.com/id/Mini-parallel-port-break-out-cable/ or http://www.instructables.com/id/No-solder-parallel-port-break-out/ ).
1 - Db25 cover would be nice.
wire
Low wattage solder
Electrical tape
Tools:
Low wattage soldering pen
Wire cutters
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