Scratchbuilt Launch Controller.
When I first entered the amateur aerospace hobby thirty years ago my first launch controller was an orange Estes with only 15 feet between myself and the rocket. I never thought of any risks associated with such close proximity of a launching rocket and myself. This arrangement worked quite nicely for my first ten years in rocketry. After a 20 year hiatus from rocketry my oldest son (Rocketeer41) got me back into rocketry. Most of my old equipment was still in my bedroom closet at my parents' house. The old Estes launcher was partially there. I could not find all of the parts. I don't even remember taking it apart. I also found my two Estes Pola-Pulse launchers which used a flat Polaroid battery that was only in production the week I bought the launch controller.
During the 20 years since my first rocketry career I had worked for an electrician and got to know heavy duty electrical components. I decided it was time to build my own launcher out of real electrical components with the help of my sons.
The components: 6x6x4 inch PVC junction box, 100 feet of 14 ga. electric wire for low voltage garden lights, generic 12v side marker light, generic tractor ignition switch, generic push button truck starter starter switch, strain relieving watertight non-metallic cable connector, male GM weatherpack connector, female GM weatherpack connector.
The components out of their packages.
Junction box marked for drilling.
Good judgment comes from experience. Experience comes from bad judgment. - Bob Packwood