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The resistance value is what we are trying to determine and is what we will use for the resistor in the LED. It should also be noted we can swap these LEDs resistors after the fact if the LEDs are too bright or too dim, but these estimations should be a good startstarting point.
LED selection was fairly simple, sorted by color and package and then went by cheapest with stock. They all contain curves showing how bright they should be for the amount of current they draw, but all of this isn’t very important as long as the feed forward voltage of the LED is less then the voltage we have in the circuit which is 3V3.
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