I've just finished writing a mini-tutorial (for my IoT students) on how to connect a Pico-W to a WiFi network with the best signal strength (lowest rssi value).
Although I must admit this posting is not directly related to Node-RED, quite a few peope have asked me to share what I've found out about networking on the Pico-W, so please accept this as a useful offering.
Here's a link to the online tutorial.
Inside the tutorial are links to my Micro-Python code and other related resources.
Thank you for share @dynamicdave!!
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