![]() ![]() To do this enter the following command in a terminal: sudo raspi-config To use the Raspberry Pi’s I2C interface, it must be enabled in the configuration menu. The grounds of the two cards must be connected to establish a common potential reference. One is the Serial Data Line (SDA) and the other synchronization clock (SLC Serial Clock Line). The pins used for I2C communication are usually fixed for each device. An I2C communication is defined by a two-wire bus (sometimes called TWI, Two Wire Interface) and an address. To establish I2C communication between Raspberry Pi and Arduino, we need to physically connect the bus which uses 3 pins. Prerequisites: I2C communication with Arduino, Remote access to Raspberry Pi with VNC Matériel This also makes it possible to add several devices on the same bus and increase the capabilities of the RaspberryPi tenfold. If the Raspberry Pi card and the Arduino card are in close proximity, the I2C bus is a good choice of communication protocol. The computing power and wireless functionality of the Raspberry Pi coupled with the input/output capability of the Arduino, results in a complete control system to drive any project. zip file that we've just downloaded.In some projects, it may be interesting to establish I2C communication between Raspberry Pi and Arduino. To install it we just go to Program -> inport library and we open the. You can download the LiquidCrystal library here: In order to make the LCD work we need to inport the LCD library for arduino. We connect the arduino to USB and we are ready to program. The SDA pin of the i2c module conected to arduinio A5 and the SCL pin to A4. ![]() Power the LCD module to 5 volts and connect the ground as well. Since the use of an LCD requires many microcontroller pins, we will reduce that number using serial communication, which is basically sending "packages" of data one after another, using only two pins of our microcontroller, pins SDA and SCL which are the analog pins A4 and A5 of the Arduino NANO or pro mini.įirst of all we connect i2c pins module as shown in the schematic. Wires, conectors, solder, soldering iron. Serial TTL/FTDI FT232RL module (Just in an Arduino pro mini case) (2€-3€) LINK eBayĦ. ![]() One Arduino NANo or pro mini (small size) (2€-3€) LINK eBayĤ. All the prices are low due to China purchase. ![]()
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