In the setup, the LCD is initiated with lcd.init() and the backlight is turned on with lcd.backlight(). Connect to LCD via I2C, default address 0x27 (A0-A2 not jumpered) You will need to change ‘lcd’ to the new name in the rest of the sketch. You can give it a different name if you want like ‘menu_display’. DallasTemperature Arduino Library Hardware used in this tutorial: - DS18B20 Digital Temperature Sensor - 4.7k Ohm (or so) pullup resistor - Solderless breadboard - Some wire jumpers - Arduino board (Uno, Mega, Duemilanove, etc.) Instructions: -If this is your first Arduino project, first go through our Arduino. Note that we have called the display ‘lcd’. The LiquidCrystalI2C library works in combination with the Wire.h library which allows you to communicate.
AS5600 is a programmable 12-bit high-resolution. When using a 20×4 LCD, change this line to LiquidCrystal_I2C(0x27,20,4) How to connect the I2C LCD to Arduino UNO. I2C introduction Arduino wire library for using I2C I2C communication between 2 Arduino board. It uses two wires and Arduino Uno has this interface at analog pins A4 and A5. This is where you will need to change the default address to the address you found earlier if it happens to be different. Inter-Integrated Circuit is serial synchronous bus. The next step is to create an LCD object with the LiquidCrystal_I2C class and specify the address and dimensions.įor this, we use the function LiquidCrystal_I2C(address, columns, rows). #include // Library for I2C communication The Arduino software includes a Wire library to simplify use of the I2C bus. The other library imports wire.h automatically. *When using the latest version of the LiquidCrystal_I2C library it is no longer needed to include the wire.h library in your sketch.
In the rest of this tutorial, I will cover more of the built-in functions of this library. As mentioned earlier we need both the wire.h* and the LiquidCrystal_I2C library.
This EEPROM use 2bits for memory addressing, but AT24C01 use only one bit.First, the required libraries are included. More info at wikipedia page.Ĭode for Arduino is based on code from page Using Arduino with an I2C EEPROM, with some differences:Ĭode at playground use AT24C256 EEPROM with 256kbit. Install the Arduino IDE on the Raspberry Pi. The Wire library allows you to communicate with I 2 C devices, often also called '2 wire' or 'TWI' (Two Wire Interface). Library for I2C in Arduino is called Wire. The jumpers TX, RX and RES have to be closed, which is also the default state of these jumpers. Inter-Integrated Circuit is serial synchronous bus. If you do not know, what EEPROM is, see wikipedia page.įor more info about used EEPROM AT24C01A, see attached datasheet.
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