TINAH can be used to indicate room temperature on 2×16 LCD display. Following sketch and the circuit diagram shows how this can be done.
The circuit diagram
Observe the following in the above code and the circuit diagram.
- LM35 temperature sensor is used. Know more about LM35
- Internal voltage reference for the ADC of atmega328 is used. It is 1.1V
- See how special symbol of degree Celsius is printed on the LCD display.
Download the source
Here is the source code (zipped .ino file) of this application.