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And if I have to put a resistor in the circuit I will be more than willing.

I will be testing the current as soon as I get the mock up wired.

Awesome thanks for the input

There are 3 leads to the ignition switch. (lighted switch).

Or this for an individual pad select

This is one of those times I wish RadioShack was still open. But until I build this I won't know. This is Version 1.2. Thought??

Cattman - So with now knowing the amperage of the LEDs from what I am reading is that this build should be good to go.

What range of voltage should I be looking fo when the "arm" switch is in then on position for continuity before then launch button is pressed at the ignitors. Btw the LED assembly is a 3 led 3/4" marker light so it would be easily seen during daytime.

The key safety switch is one that can only be removed when in the off position.

This is more of a co-build with my son. So he can learn wiring and electronics. He built a Estes Leviathan last year and the Estes launch controller took forever to ignite the motor. The other issue is no matter where I need look for the forward voltage of the Red LED assembly I cannot seem to...

I am in the process of building my own launch controller. I have came up with a schematic and am looking for more input on what I might need to make it safe and reliable. I have included a safety key and indicator lights. My question is the continuity and not setting off the ignitors. Diagram...