According to the detailed instructions that are published by the guy who designed my chassis, opening a window in the blade holder is necessary. If you find a less destructive option, Sith4life, I would love to hear it!
Btw, the inner diameter of the hilt is different at the level of the internal blade holder and below. Which measurements do you need?
I have been seeing lots of variability on resistor values.
Ronin, you and I are using the same TriCree from Justin.
I tracked down the specs from Cree here:
http://www.cree.com/~/media/Files/Cr.../XLampXPE2.pdf
All three of the XP E2 LED's have a forward current of 1000mA.
At that voltage, here are the forward voltages of the various colors:
Green: 3.7 V
Royal blue: 3.4 V
Red: 2.65 V
The Prizm sound board sends the entire voltage of the power supply to the main LED's via a common anode.
I am using a 18500 at 3.7 V
So the required resistors are:
Green: none.
Royal blue: R=3.7-3.4/1=0.3; P=0.3 * 1^2=0.3W, so 0.3 ohms @ 0.3 W (rounding up to 0.47 ohms @ 0.5 W available in the store).
Red: R=3.7-2.65/1=1.05/1=1.05ohms @ 1.05 ohms (rounding up to 1.2 ohms @ 3 W available in the store).
You guys agree with the calculations?
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