Raspberry Pi PICO W board with various I/O and webserver
send MQTT to RPI broker
there Node-Red SQLite db trends data
BLOG info
summary
there is more work, to update the CP802 to current CP829 or CP900a5
but that failed for changes in http_server and minimqtt libs
AND newer CP timing and memory handling generally
insofar a broken project
uses CP829
can run Web-server OR MQTT
but never mqtt-client
detailed diagnostic using gc.mem_free after import