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Zigbee is a protocol that has been around for quite a long time, and you can purchase many cheap smart sensors to incorporate ...
T he ESP32 is a fantastic little microcontroller with a world of possibilities. Its specifications may appear modest, but its capabilities enable it to power all kinds of devices.
Posted in Microcontrollers Tagged ESP32, home-assistant, low power, soil moisture sensor, soil sensor ← OpenCV Spreads Smart Camera Joy To See Ideas Come To Life ...
The ESP32 based sensor nodes publish their readings to an MQTT broker running on the Raspberry Pi. The Pi subscribes to these sensor node topics to pick up the relevant sensor data.