In the add-on directory I found a discontinued and archived implementation for Vaadin 7. Before I start building something on my own completely I would like to ask if someone has implemented something and has any tips for me.
Btw, the first time this Vaadin app will be used is at the JavaLand conference (11 days to go) on a 45 m by 8 m screen. Vaadin often had a booth at the JavaLand. Maybe they will be there this year, too? All the boothes have a great view to the social media wall…