Sensing by capacitive loading is critical to my final project so I made Neil's Hello Loading sensor and then tested it.
This board was successful so my next step was to make a board that could take in two inputs. I made a board I called the 2square board to monitor two different sensors. It was mainly a step to see if I could manipulate in C the inputs on the attiny44 that I could listen to before I took the leap to charlieplexing 16 sensors.
I continued to work with inputs in my final project page so stay tuned. The top picture on this page is a picture of a quarter of a chessboard that is able to sense 16 different inputs using charlieplexing. Link here.