So I bought some of the 10mm White LEDs from the shop (http://shop.pimoroni.com/products/led-10mm-pack-of-5) and am trying to work out what resistors I will need to use to make them light up.
I have looked online and read the tutorials about calculating resistors required but can’t find a voltage drop listed anywhere on the pimoroni website. How can I calculate the resistors required without this?
I need the leds to be lit quite bright as they will be hidden behind some white perspex as back lights for capacitive buttons. I’m planning to power them through the GPIO pins as output pins, so i can turn them on and off as needed through code, so the connection would be:
[GPIO Pin] ------ [LED] ------ [Resistor] ------ [GND]
Thanks for your help in advanced