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Circuit Diagram Here's how you should connect the soil moisture sensor to the NodeMCU: VCC of the sensor → 3.3V on NodeMCU GND of the sensor → GND on NodeMCU Analog Output of the sensor → A0 on ...
Description of Connections Soil Moisture Sensor: Connect the sensor’s signal pin to A0 on the ESP8266, VCC to 3.3V, and GND to GND. DHT11/DHT22: Connect the data pin to D2 on the ESP8266, VCC to 3.3V, ...
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