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Evil Scientist or Rocket Science? You Decide.
DN Staff
February 6, 2006
2 Min Read
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.
Amt | Part Description | Allied Part # |
|---|---|---|
4 | 100 k ohm,0.25W resistor | 832-0717 |
2 | 1 k ohm, 0.25W resistor | 832-0356 |
2 | 200 k ohm, 0.25W potentiometer | 754-1131 |
4 | 0.01 muF, 50V capacitor | 881-5324 |
3 | 100 muF, 25V capacitor | 852-6560 |
2 | 0.1 muF, 50V capacitor | 881-5336 |
2 | LM555 | 263-0133 |
2 | Red LED | 431-0193 |
1 | Diode | 273-0063 |
1 | FET IRFU3704Z | 273-0709 |
1 | 6 pos screw terminal | 409-0047 |
1 | Switch, SPST | 683-0301 |
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