First let me say, sorry if this has been asked or if its a dumb question.
I'm a bit uncertain and would like to get the advice of the pros before proceeding.
I'm building a PVC saber and using NB card for sound.
Power source is 2x14500 for a total of 7.4 volts.
The led is a 3-up royal blue/royal blue/royal blue. This led is bridged/wired in serial.
When calculating for the resistor for the led do I use the total VF for all 3 leds (10.2 vf) ..or just one? 3.4vf
Also, Please advise if you think I need to make changes to some of the components as well.
Thanks in advance.
Albert
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