Need Help With Project Answered
I am working on a high rocketry project. I want to made a launch detector. My idea is to use a magnet reed switch (PN# ORD2212) and a electromagnet. Which I will turn off about 2 seconds before launch, to give a 2 seconds base line. I will use magnet powder (around the switch) so when the electromagnet is on it will hold in place, then drop off when the power is remove, opening the switch signing the fight computer to start flight operations. The unit is 20mm Wide/15mm Length/35mm Height (screen shot attached).
My question is what magnet power should I use? It has to be as light as possible. Also how do I calculate the electromagnet (appx 12V)?
Thanks for the help