Project description:
A co-worker of mine wanted a small timer that ranged from 1s to 15s depending on what the user selected. They wanted to use a set of 4 dip switches to select the time. Needed to be as small as possible (weight being very critical) and run off of a 9V battery. Needed 2 failsafes to prevent accidental ignition of the second stage of the rocket.

Electronics used:
TC4422
Link: Rocket timer

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