I am quite new to electronics. I am trying to control three LEDs with an Arduino using a transistor.
I was wondering what the base current limiting resistor value should be.
I looked around the internet and some YouTube videos and came up with these calculations, but I don't know if I am correct or not.
I am using a 2N2222 NPN transistor and I am taking 100 as GAIN (B).I came up with 1.4K. Am I right or am I missing something?
LED Resistors are 220Ohm