Kevin Cook's
AWESOME Model Rocket Launch Controller Project


I had an old model rocket launch controller that I built in
college that could launch up to 3 model rockets at once. Pretty cool in
it's day, but now that I have 2 boys who will be getting into Cub Scouts, etc...
I wanted to upgrade it!!! I had been thinking of doing it for some time,
but never had the time.
Oddly enough, the thing that made me finally do it was
actually WORK related! I got an e-mail that asked if anyone had any
knowledge of Model Rockets at work, and responded that I could help. It
turns out that we are going to do a little rocket launching event at the
Microsoft campus in Charlotte for the Windows Vista and Office 2007 Product
Launch. How cool is that???
I now had more of a reason to get it done, and I was taking a
much needed holiday vacation anyway, Soooooo - I volunteered to make the Launch
Controller and Launch Platform. :)
I just did a quick wiring diagram for those interested - (.jpg -
.vsd -
.pdf)
Since this project was completed, I have gotten back into
Rocketry in a
BIG
way!!!

Deciding on the layout of the switches. The old controller is on the
right, it could launch only 3 rockets. :) |

Holes drilled, some switches mounted. |

All switches mounted and wired up! |

A Closer look at the wiring on the back of the panel |

A Closer look at the wiring in the bottom of the can. I used a
large can in case I want to add internal rechargeable batteries at some
point. |

No security key, no power. :) |

Key in - Power applied.
Green = Continuity Loop / Unselected
Red =
Selected. |

Rockets 1, 2, 4, and 7 selected. |

All rockets selected. :) |

Armed - When you arm the system, the buzzer you see in the close ups sounds.
Next step is to push the red FIRE button - Then WHOOSH! |

All Labeled Up! |

The DB25 Port and the Power Jack. |

Another look inside - This is with the addition of another green LED for a power
indicator, and the 8 main green LED's cut off the main bus (Negative) and
connected to the empty side of the DPST switches to show continuity through the
engine igniters. - See the description on my wiring diagram. |

The beginnings of the Launch Platform. Yeah - I know - Clean up the garage
KEV!!! :) |
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