This is a Table Tennis Scoreboard I have been working on. There is a switch to toggle between games that end at 11 points or games which end at 21. In 11 point mode, the serve swaps after 2 serves In 21 point mode, the serve swaps after 5 serves In Deuce mode, the serve swaps player after each point. It is the second version; Version 1 used 4 7-segment LED displays for displaying the scores. The LED Matrix allows for customized messages and displaying serve sides. Picture of back: danricho.files.wordpress.com Picture of top for thickness: danricho.files.wordpress.com Picture of the buttons under the table: danricho.files.wordpress.com The equipment: – Developed using Arduino Uno – Arduino Nano for the usable version. – Sure Electronics 3208 LED Display – other small components/connectors more info will be posted to my blog: danricho.wordpress.com