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Reference circuit diagram of an Arduino-compatible LCD backpack is shown below. What follows next is information on how to use one of these inexpensive backpacks to interface with a microcontroller in ...

Before we get started into programming I2C using two Arduinos. We need to learn about the Wire library used in Arduino IDE.. The library <Wire.h> is included in the program to use the following ...

Only two wires can be used from the microcontroller while the I2C bus can handle up to seven I2C LCD interfaces. An Arduino, Microchip PIC or any microcontroller with built-in or bit-banged I2C ...

Arduino library for the I2C LCD display, typical 20x4 characters. The library is inspired by the excellent New-LiquidCrystal library by F. Malpartida. Therefore the interface is kept quite identical, ...

Use an ATtiny85 to display sensor values on an I2C LCD (equiped with PCF8574): GY21P (Si7021+SHT21) I2C sensor, temperature and relative humidity DS18b20 Dallas sensor, one wire, temperature I had ...