Use Arduino MKR1000 and a LCD to set the message of the day.
Things used in this project
I wanted to display text on an LCD screen with the MKR1000. I wrote a simple sketch that subscribes to a topic from my own Mosquitto server and updates the screen with on the data it receives.
You can update the screen using your phone or your laptop, all you need is a MQTT client. Setting up your own Mosquitto server is a little harder and I won’t be covering this, you could use Arduino Cloud as an alternative.
To wire the LCD just search for the UNO wiring and invert pin 11 with pin 4.