Led grid part 1 – Design Process

This is a copy of a guest post I wrote for my wife’s blog, about building an LED Grid for our collaborative design project The hardware for the LED grid project consists of two major elements: The LED lights, and the IR touch system. The first idea for the board had the main LEDs spaced out in a 10mm grid. I prototyped this on some surface mount prototyping board to see if I could fit everything needed into the space available. It was a bit of a tight fit, and the nature of how I made it makes it not very pretty. Because the LED cells were so close together, I had to alternate the IR touch transmitters and receivers in each column to keep them from interfering with each other. This was enough to prove out the concept and get initial values for the resistors for the touch system. […]

Read more