weewx runs exactly one station driver. I wanted the Vevor station’s data and an indoor sensor that only exists as MQTT messages from rtl_433. weewx-metadriver runs both drivers side by side, and an old MQTT driver needed a rewrite before it would work with weewx 5 and paho-mqtt 2.
A Vevor weather station that can only upload to Weather Underground, a Raspberry Pi 3 pretending to be wunderground.com on its own isolated wifi network, and weewx-interceptor catching the data. Plus the WPA2 handshake that failed nine times out of ten, and the console clock that was an hour fast.
How a Raspberry Pi 5, a cheap u-blox GPS module, and chrony turned into a home stratum-1 time server — the wiring mistakes, the serial-port gotcha nobody documents, and the PPS upgrade that took accuracy from ±50ms to ±350ns.