Building a wireless launch controller based on this ‘Rolling code HCS301 Transmitter Keyfob & 4 Relay Receiver Controls 12V 433.92MHZ‘

The box at the pad is powered by a Mighty Max 12v, 5 Amp battery, and includes a safety on/off switch, bright LED indicators for continuity and short, and the relay board.

 

Using lamp cord and alligator clips for the launch pad leads.

Testing the wireless controller

Need one more modification before complying with NAR Safety code. Need to include a second (momentary) switch in series with the switch on the FOB. 

Need to break this (+) plane from the battery power and insert a small momentary switch, somehow.   Thinking of something like this: