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how do i wire up 6 piranha leds? Answered



There is no great magic. Get the exact specification for the LEDs you have, forward current, forward volt drop and work from there. What supply voltage do you have/need ?


I have the same question. I'm going to use a 9 volt battery. The four prongs that the piranha LEDs have are throwing me off. I know two are anodes and the other two are cathodes, but I'm not 100% sure that I can just wire each of them together like they were just two large electrodes. Forward voltage is 2.2 and Foward current is 40 mA. I also wanted to add an on/off switch, but I'm not sure if that'll affect which resistors I'll need to use... Thanks!

Which am I using?
Six of these: http://www.superbrightleds.com/moreinfo/component-leds/5mm-red-piranha-led-90-degree-viewing-angle-5500-mcd/356/1303/

Put three of them in series, with a 50 Ohm resistor, and put another 3 in parallel, with a 50 Ohm resistor.