sandmantoy
New Member
I am trying to build a launch controller for my rocket hobby to reduce equipment carried in the field. One type of rockets use 9 volts to launch while others use 12 volts to launch. My plan is to use two 9 volt batteries a switch to select mode and verifie via an analog volt meter. There are a few 12 volt led's involved here too making the controller run on 12 volts. So with two 9 volt batteries wired to produce 18 volts reduced to 12 volts and be switched down the line from 12 volts output to 9 volts output. Is a regulator what I am looking for or two regulators? What about resistors? There are three LED's one to show continuity that my electric matches are connected one showing the fire switch is armed and one showing ignition voltage sent. My goal is that the 18 volts will last awhile when basically shorting it out at 12 volts and 9 volts every time a rocket is launched. This is normally done with 22 gage wire sent out to the E matches so I don't think there is a lot of amperage here. I will look further for this info to make sure. I have seen people use everything from car batterys, motor cycle and lantern batteries wired up to do this. A radio shack project box and some of there other gizmo's, a little creativity and some help from you guy's. I'm thinkin less than 2LBs. to carry and keep the kidds happy for hours... Sorry to be so long winded lol.