Hi,
I have an Arduino uno. I planning to build a circuit with a parrellel circuit with 2 leds in series in each branch.
The forward voltage of the LED are 2.2v and the current for the LED is 15mA.
The Arduino supplies 5v and and a current of 20mA.
Obviously I need a resistor. Do I use 15mA or 20mA to calculate this?
Do I need to alter the Arduino code to get the Arduino to discharge 15mA or will the LED work of the 20mA.
Sorry for any confusion, I am novice! But thanks in advance for any help?!
