LED Resistor Finder
This is a small resistor array I made so I can figure out what resistor to use with various LEDs at different voltages. They start at 2.2 ohms (at the top) and go up to 2.7 kilo-ohms (at the bottom) .Plug the LED in across the board and work your way up till you see a usable brightness for whatever ...By: peterpeter
Continue Reading »
from Instructables: exploring - featured http://ift.tt/2rnsRnv
via IFTTT