Could I use a joule thief to power 2 super bright blue leds?
Using this instructable's instructions https://www.instructables.com/id/Make-a-Joule-Thief/
, would it be possible to run 2 blue led's off 3.3 volts? I'm using a 3.3 volt logic system and I need to have 2 blue led's light. Also, how do I know what resistor to use for this? And could the led get too much voltage and be blown? Sorry I have so many questions. I've just never used a joule thief!