Create a new instance of the LiquidCrystal_I2C class: Include the required Arduino libraries: Installing the LiquidCrystal_I2C Arduino library LM35 with I2C LCD example code /* LM35 analog temperature sensor with I2C LCD and Arduino example code. Select the latest version and then click Install. Now search for ‘liquidcrystal_i2c’ and look for the library by Frank de Brabander. Serial.print(" \xC2\xB0") // shows degree symbolĭelay(1000) // wait a second between readings
#ARDUINO I2C EXAMPLE LM75 SERIAL#
ATtiny85 I2C protocol or Two wire mode: I2C is a popular serial communication protocol where the data bits transmission takes place via two wires SDA and SCL.
#ARDUINO I2C EXAMPLE LM75 HOW TO#
Print the temperature in the Serial Monitor: In this tutorial we will see how to configure USI as I2C protocol in ATtiny85 microcontroller to send and receive data between devices. Convert the voltage into the temperature in degree Celsius: Get a reading from the temperature sensor:įloat voltage = reading * (1100 / 1024.0) Set the reference voltage for analog input to the built-in 1.1 V reference: Begin serial communication at a baud rate of 9600: Define to which pin of the Arduino the output of the LM35 is connected: I have highlighted the lines you need to add/change in the code below: /* LM35 analog temperature sensor with Arduino example code. Note that this limits the temperature range that we can measure to 0 to 110 degrees Celsius. With 1.1 V as the reference voltage, we get a resolution of 1100/1024 = 1.07 mV or 0.11☌. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to products on. Supplies Hardware components LM35 analog temperature sensor (TO-92) How to control a character I2C LCD with Arduino.TMP36 analog temperature sensor with Arduino tutorial.How to use DHT11 and DHT22 sensors with Arduino.The complete guide for DS18B20 digital temperature sensors with Arduino.If you would like to learn more about other temperature sensors, check out the articles below.
Lastly, we will look at how to display the temperature on an I2C LCD to create a standalone thermometer. In the second example, I will show you how to use the built-in 1.1 V reference voltage of the Arduino to get more accurate readings. The first code example can be used to take temperature readings from the sensor and display the results in the Serial Monitor. Next, we will look at how to connect the sensor to the Arduino.
In the first part of this article, you can find the specifications and pinout of the LM35. I have included a wiring diagram and example codes to help you get started! In this tutorial, you will learn how to use an LM35 analog temperature sensor with Arduino.
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