David Johnson-Davies demonstrates a wireless message display based on a Raspberry Pi Pico W and written in Lisp. You can send a message to it via Wi-Fi from a web browser on a mobile phone or computer, and it’s displayed on an 8-character alphanumeric display.
It uses two Adafruit four-character I2C alphanumeric modules as well as the Pico W.
See the project writeup here and code here.
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