The Arduino MKR RGB Shield allows you to write messages and add graphics. A ready to use library with examples and methods is available for use to easily write static and scrollable text. You can use this shield to show values from your board and is controllable from the Arduino IoT cloud. No need of solder, or special adapters, just plug the RGB matrix shield on top of your favourite MKR board and you are ready to go! The mounted LED's are very dense and bright, with full RGB colours!