Evil Scientist or Rocket Science? You Decide.Evil Scientist or Rocket Science? You Decide.

What could be cooler than launching model rockets? Launching a lot of them! To control multiple rocket launches relative to one another and put on an utterly amazing backyard air show, Joe designed a circuit (replicated for each rocket) consisting of two 555 timers configured for monostable operation and a high-current FET. A single launch button is wired parallel to all of the circuits. Delay times (from the activation of the launch button to the activation of the FET) are adjusted with a potentiometer and range from a small fraction of a second to tens of seconds.

MODEL ROCKET LAUNCH SEQUENCER PARTS LIST
For Joe's instructions on how to build your own model rocket launch sequencer, click here.