I was just hoping someone could quickly confirm that I’m calculating the resistor value correctly for an LED I have in an arcade button switch that I will be hooking up to a particle Photon.
It’s a clear colored LED. I measured the forward voltage to be 2.76 volts. If I hook up the LED to a digital pin, I would assume the pin can provide 3.3 volts at 15mA safely (please correct me if I’m wrong). So (3.3-2.76)/.015 is about 36.52 ohms. The closest resistor I have available is 33 ohms. Would this be a safe value to go with?