firework igniter systems

[spanks_4]

I'm looking at building my own firework ignition module and need help laying out the schematic so I can get my parts order together.
Here's what I want it to do:

on/off key
arm/test switch with LEDs
20 hook ups
20 buttons w/LEDs for continuity checking
the ability to hook it up to a 12V battery.

Basically take what moparman did and add more slots and LEDs: https://www.youtube.com/watch?v=gqKZ7cBI3Jc

If anyone can help I would be very grateful. I can build this stuff all day long, but schematics/laying it out still kicks my butt.

[tarkus4]

Just do a Google search for fireworks firing system schematic.

[TCJ4]

Hi,

I found this online http://www.instructables.com/id/Fireworks-Controller/

Looks pretty helpfull

[spanks_4]

Thanks TC! I looked at dozens of pages and never ran across that one, but that will get me on the right track. Only things I will change is making it a 20 port, but otherwise it's perfect for me.

[TCJ4]

No problem, glad to help