Those are blue LEDs, which have a forward voltage of about 3.2V. Since the power supply is 3.3V, I was told that I don't need resistors on them (or it would be something like 5 Ohms or less if I did use one).
I did previously experiment with using different resistors on a blue LED to see if it affects the brightness, as the blue ones are very bright without any resistor. I found that a 330 Ohm resistor (just one I had lying around) reduced the brightness, but I have not yet tried using that in my circuit with multiple LEDs.
Does it matter how many Ohms are on the blue LEDs?
I did previously experiment with using different resistors on a blue LED to see if it affects the brightness, as the blue ones are very bright without any resistor. I found that a 330 Ohm resistor (just one I had lying around) reduced the brightness, but I have not yet tried using that in my circuit with multiple LEDs.
Does it matter how many Ohms are on the blue LEDs?
Statistics: Posted by xtal256 — Tue Sep 23, 2025 11:37 pm