no issue / ideas only

[MyRaspberry]

( first thanks for sharing ) not sure i have anything to offer, i try: Board: Raspberry Pi PICO W

• CircuitPython (your unchanged pid.py code )
• web-server
• easy operation concept ( input SP or OUTPUT and Mode follows )
• PID faceplate graphic ( no library, inline SVG hard coded )
• all on one device ( 6$ ) Raspberry Pi PICO W board
• use from any LAN browser, PC or phone

OPTIONAL +50$ more Board: i try on Raspberry Pi 4b 4GB Ram

• data to LAN 'Raspberry Pi' MQTT broker
• Node-Red SQLite DB ( multi device )
• Node-Red current trend
• Node-Red historic trend

take a look http://kll.byethost7.com/kllfusion01/infusions/articles/articles.php?article_id=227

and download code ( now also on GIT ) https://github.com/MyRaspberry/PICO_W_PID