webaddic – here is the thread that Crossroads, God bless his heart 
helped me with. There are five pages of trials and tribulations and if you need any help just contact me through the forum with a post on this thread and an e-mail because notifications do not always work. Good luck and happy scrolling. Here is a link to the circuit schematic that I used as well the file is called Matrix 2 SR ULN2803.dsn You will have to download the circuit schematic file then install Tinycad to view it. It’s free and quite useful. If you want some code just let me know and I will dig some out. Pedro