arduino mega 2460 lcd 2004a serial pinout

#include & lt Wire.h& gt // I2C library Save the sketch on your computer, then upload the sketch to the Arduino.

On line 10 of the code, change the existing address to the recorded I2C address. I2C Scanner Sketch printing out the I2C address of the LCD Display in the Serial Monitorĭouble click on the Hello World sketch below to select the code, then copy and paste into a text editor. Upload and run the I2C scanner sketch mentioned above and record the I2C address written to the Serial Monitor. Once the LCD is wired to the MEGA, connect the Arduino to your personal computer. For illustration purposes only the LCD below is a 16×2 version but the wiring is identical to a 20×4 display. I2C Daughter Card on the back of the LCD displayĬonnect the pins on the daughter card to the MEGA using the following pinout. Mounted on the back of the I2C 20×4 LCD Display should be a daughter card with 4 I2C pins. Think of a sensor shield as a conventional power strip. Each pin on the board is paired with a +5V and Ground pin. A sensor shield breaks out the analog and digital pins into sets of 3. Arduino MEGA sensor shieldĪ shield is a card that sits directly on top of an Arduino, expanding the functionality of the device. These jumpers usually come in sets of differentĬolors with different types of male/female connectors. The easiest method to connect peripherals or sensors to the By using an I2C scanner sketch and attaching one device at a time to the MCU, a peripheral’s address can be written to the Serial Monitor window. While some hardware manufactures specify I2C addresses, it’s good practice to confirm the address on your own. I2C hardware addresses have to be initialized at sketch runtime to let the MCU know which peripheral to communicate with. I2C is a shared bus, meaning multiple devices can share the same connection. In general I2C hardware is slower in comparison to SPI but the protocol uses fewer pins to communicate. SPI or serial versions of 20×4 LCDs are also available, so make sure to purchase the correct type. I2C refers to the protocol that allows the MEGA to talk to the display. There are smaller 16×2 LCDs but for our purposes the more data that we are able to display the better. While this might seem primitive in comparison to modern computer monitors, LCDs are tried and true pieces of hardware that are easy to come by and relatively inexpensive. Think of a 20×4 LCD Display as an old-fashioned typewriter that is only able to type a maximum of 20 letters or numbers across 4 lines on a sheet of paper. Personal Computer with Arduino IDE installedįor our ongoing projects we’ll be using this type of display.Later on we’ll be playing with Processing, an open source graphics application that can be used for such tasks, but for now we’ll keep it simple. For example an Arduino can be programmed to transmit temperature readings to dedicated programs such as data plotters. To put that into simple terms, an Arduino can talk to a desktop computer and a desktop computer can talk back. Serial CommunicationĪn Arduino can transmit and receive data bit by bit to and from a desktop computer over a serial connection.

The goal of this post is to hook up an I2C LCD to a MEGA and write to both the display and the Serial Monitor. The first method is via the Serial Monitor which is part of the Arduino IDE and the second is to an alpha numeric liquid crystal display ( LCD) screen. In this post, we’re going to focus on two separate ways of passing data to the user from the Arduino. Basic understanding of programing and uploading sketches to an Arduino.MEGA needs an equally efficient and tiny display in order to show the user what’s Arduino MEGA as an efficient and tiny mini computer.

Arduino mega 2460 lcd 2004a serial pinout