In this tutorial, we will learn temperature sensor interfacing with arduino to measure temperature and to control devices according to temperature. Lm35 provide 10mv /degree changes, so if temperature is 28*c, lm35 will provide 280mv at output pin 2. As we know, these are analog output, so connect output of lm35 to arduino analog channel A0 as shown in circuit below.
- Arduino uno
- LM35 (Temperature sensor)
- Lcd JHD162A
- Power supply
In this circuit arrangement, Lcd is connected on pin 7, 6, 5, 4, 3, 2 of arduino uno. d0-d3 of lcd is not connected , R/w pin is connected through ground to enable write mode. Output of temperature sensor LM35 is connected on analog channel of arduino A0.