You don't need a resistor, you can drive it directly from the board.
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You don't need a resistor, you can drive it directly from the board.
The last time I measured the output voltage and current from a MR board with 6V input it was 3.2V and 1200mA. That was with an Anakin board. I have a Vader and Yoda that I can test too.
Thanks!
The problem you are having is that the red and amber LEDs run at a lower voltage (2.85V), so it is getting very hot with 3.2V going to it. Adding a little more resistance should do the trick. Try adding a 1 to 1.5 ohm resistor.
I had added a 1 Ohm 2 Watt resistor, but the voltage output from the Mace board might be higher than 3.2V. I'll try adding a 2.2 Ohm resistor as Matt suggested.