Hi Guys, Please check my math:
A) I have 8 5mm 3v .02a LEDs.
B) I wired them in 2 parallel series. So LED bank has 4 bulbs in it. Each LED bank should require 12v and 80 milliamps
C) I have a 12v 1a wall wart to power everything
D) The 12v will supply will supply adequate power which won't drop from 12v since the 2 series of 4 LEDs are wired in parallel. The current of 1amp is split across both banks.
1amp -> pass through 2 x 320 ohm resistor -> Remaining current .26a
.26amp -> pass through 200 ohm resistor -> .6amp to Bank 1 of 4 LEDs
.26amp -> pass through 200 ohm resistor -> .6amp to Bank 2 of 4 LEDs
Does my math sound right...would you guys choose a different resistor values or maybe use a potentiometer to control each set of LEDs?