Reply to "using "raw" LED's not strips or pre-wired w/ resisters"

gunrunnerjohnOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

They don't work well in series, I've tried it.

If you have 9-12VDC, one of the $1 step-down converter modules from eBay is just the ticket to power all of them, This will convert your 12V DC to any regulated voltage you like that's lower than 12 volts. It's also very efficient, so you don't need a high current 12V supply. If you want 1A out for 50 parallel LED's each drawing 20ma, you'd only need 300-400ma of 12V supply to feed them using this supply.

I'd put a 100 ohm resistor in series with each of the flickering LED's to equalize the currents and adjust this for around 4-5 volts (max 5V).

You can get them in quantity for about $1/ea as well, handy to keep around.

DC-DC Buck Converter Step Down Module LM2596

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DC-DC Buck Converter Step Down Module LM2596

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