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Why my next microcontroller will be an ESP32, not a Raspberry Pi Pico

The ESP32 does everything a Pi Pico does, but costs less and lasts 100x longer on batteries ...
Network World

Node-RED, wiring the Raspberry Pi to the IoT

When you want to connect an IoT device to anything (or, for that matter, anything to anything), you should take a serious look at Node-RED, a free, open source visual process wiring system from IBM ...