Igniter 3 question...

[deviltronix]

I'm confused about the igniter 3 manual...when running RGB crystal in parallel with the main led, it says to use 22-33 ohm resistor for the Red.

I'm using TCSS RGB led (Run at 20mA. forward voltage is Red-1.9V Blue-3.3V Green-3.3V)
When I do the math (calculating Red) with standard 3.7 battery:
Using the standard formula of 3.7-1.9/.020= 90 ohms
I'm calculating 90 ohms...

What am I missing?



igniter3.jpg

[Forgetful Jedi Knight]

That sounds about right for an accent LED. For questions about that board, you’d be better asking over at the TRA.

[Tom Tilmon]

I'm confused about the igniter 3 manual...when running RGB crystal in parallel with the main led, it says to use 22-33 ohm resistor for the Red.

I'm using TCSS RGB led (Run at 20mA. forward voltage is Red-1.9V Blue-3.3V Green-3.3V)
When I do the math (calculating Red) with standard 3.7 battery:
Using the standard formula of 3.7-1.9/.020= 90 ohms
I'm calculating 90 ohms...

What am I missing?



igniter3.jpg

I use 82 ohm resistors in that application. No fails yet.

Tom