key switch

I am working on a new safety switch designed specifically for rocketry. Anywhere that your electronics will ignite a motor, and also in some ejection setups this switch is designed to improve safety and prevent accidental firing from mistakes or component failures. The switch will be a highly...

Now that I have found some clear and understandable plans for a single-pad wired relay launch controller (kudos to jsdemar for those plans!), I am going to try to build a launch control system. One stumbling block I have encountered is finding a 12V key switch that cannot be removed when the...