In this circuit LM35’s output is connected to the Arduino’s A0 pin, which converts the available output voltage value to a float value of temperature, and then, displays it on the LCD screen. The 10K ...

In my case I used the well-known BD139 transistor and a 9V battery to provide power to the fan and transistor. The LM35 temperature sensor and red led are powered with 5V from the ... 131 comments on ...

This video demonstrates how to set up a remote temperature monitoring system using an Arduino Uno R4 WiFi, an LM35 temperature sensor, and the MQTT protocol. The system captures ambient temperature ...