Mind over Matter: Stuff I cared about at the time

Sign Switcher

For our church pageant, we retold the Christmas story in the guise of a Christmas Trivia game show. There was going to be a person responsible for holding up signs like “Applause!” etc. but I thought to myself, “I have some scrolling LED signs. I bet with a little effort, I can build/program a device to let someone select from a list of pre-defined messages.” And it turns out, I was right! Pictured below is a slightly updated version of the device. It now has a (lighted) power switch, to save battery, and the Display on/off switch has been upgraded from a bat handle toggle to a nice rocker. Oh, and I changed the messages to some that could be used in a sermon…


So intuitive, even a (very bright) dog can use it 🙂