Circuit Diagram of DHT22 Module. The complete schematic diagram of the DHT22 Temperature and Humidity Sensor Module is shown below: The DHT22 module's schematic diagram is shown above. As previously ...

The circuit reads the temperature from the LM35 sensor, displays the values in the serial monitor, and lights up the corresponding LED: Red LED: Temperature ≥ 30°C; Yellow LED: Temperature ≤ 20°C; ...

Develop a temperature monitoring system using Arduino and an LM35 temperature sensor. Establish reliable communication between the sensor and Arduino for real-time data acquisition. Implement data ...

Fig. 2: Circuit diagram humidity and temperature monitoring using Arduino with ESP8266. The DHT11 sensor senses humidity and temperature, and sends the information to digital pin 5 of Arduino MCU, as ...

Fig. 1: Author’s prototype Fig. 2: Block diagram of the project Circuit and working. Circuit diagram of the Arduino real-time clock with temperature display is shown in Fig. 3. It is built around ...

You also need to select the transistor by the type of fan that you use. In my case I used the well-known BD139 transistor and a 9V battery to provide power to the fan and transistor. The LM35 ...