Punch in those coordinates, Marty.
Back to the Future was quite influential on me, so as a result I try to collect various parts of the Time Machine.
My friend made a mold of the original keypad and gave me some less than perfect castings for me to work with.
I worked hard to clean up the castings and find parts like a DTMF keypad and suitable lights and switches. It was a lot of fun to put together!
This unit now works on either a 9v battery or a plug. It brings a smile to anyone who recognizes it!