I just got a 6 x 10 each pack of colored clear LEDs from CLEDs and was wanting to test them for color and brightness.
I loaded the blink sketch and tied GND and Pin 13 to the power rails on my breadboard. I stuck in a red LED and it flashed on and off and was very bright. I then also stuck in a blue LED but it remained off. I pulled the red LED and the blue one started blinking. I put the red one back in and the blue one stayed off.
Did I reach some sort of cut-off point where the blue LED just refused to start because not enough current?
Well there were no specs or instructions with this. It was 6 bags of 10 LEDs each and 60 resistors all of the same value.
Since they were all the same value I assumed all the LEDs ran at the same voltage.
I have removed some offensive or not useful comments. I would like to encourage everyone to abide by the following principle, adapted from the O'Reilly code of conduct: "[this forum] should be a safe and productive environment for everyone"
Zapro:
And yes, it turns orange just before the magic smoke comes out
Did you just burn a breadboard to prove a point about LED color?
I like the cut of your jib.
PS: Crocodile clips...
The breadboard is fine, there never was much current running flowing.
The LED and Resistor died though
// Per.
The most interesting part was that both parts died, not just one or the other. We assume that 1 part fails, opening the circuit, and the other parts in the circuit are are spared, but clearly, in your demonstration both parts failed.
FWIW, I have LEDs running w/out resistors, and they have been running for months without failure. I had originally assumed that the LEDs or the arduino would fail, but not both. I keep waiting for the cube to die, but its been a few months now, and they just keep working. I wonder how long it will take to break 192 LED running 24/7 with one arduino and no resistors. What will break first the LEDs or the arduino? who knows maybe both!