Room temperature indicator

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

Room temperature indicator using TINAH

Arduino code

roomtemp1

roomtemp2

Special features

Observe the following in the above code and the circuit diagram.

  1. LM35 temperature sensor is used. Know more about LM35
  2. Internal voltage reference for the ADC of atmega328 is used. It is 1.1V
  3. 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.