MARINE1142
Member
here is what i m tring to do and have had a complete brain fart. I need 40 superbright led they are 18000 mcd they run off of 4 volts 30ma 120mw what size reistor do i use also what is the fromual for finding out. Also do i need one resistor per led or can i use a pot or something else. Also i m hooking it up to my pc so i only have 5 volts available.