If you are very new to Arduino try these simple examples to get you started. If you are already familiar with the serial monitor feel free to jump ahead. Arduino Serial Monitor. This is a basic example of displaying text in the serial monitor. Connect the Arduino to a PC, upload the following sketch, open the serial monitor and be amazed. The Arduino Reference text is licensed under a Creative Commons Attribution-Share Alike 3.0 License. Find anything that can be improved? Suggest corrections and new documentation via GitHub. Doubts on how to use Github? Learn everything you need to know in this tutorial. 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. Serial Communication. An Arduino can transmit and receive data bit by bit to and from a desktop computer over a serial connection. To put that into simple terms, an Arduino can talk to a desktop computer and a desktop computer can talk.
Hello friends, I hope you all are fine and having fun with your lives. Today, I am going to share a very basic and introductory tutorial named as How to use Arduino Serial Read. I am sharing this tutorial because I am getting a lot of emails in which users normally asks about basic Arduino tutorials as they are very new to it. So, I thought of sharing this very basic Arduino tutorial in which we are gonna have a look at how we can use Arduino Serial Read command.
I selected this tutorial as my first tutorial in this list of Arduino basic tutorials because learning to use Serial port is very necessary as its one of the best troubleshooting tool for your code. I know things are looking bit complex here but I have explained each and everything below in detail so don’t you worry. Just read it once in complete so that you get all the tiny details of this Arduino Serial Read. I have also given a Proteus Simulation in which I have received the incoming data from serial port and displayed it on LCD. Before going into the details of this Arduino Serial Read, let me first discuss the Serial Port in General.
What is Serial Port ?
I have already written a detailed tutorial on this topic which you can read at What is Serial Port ?
Serial Port is used for data communication, it sends data from one place to another.
Serial Port has 9 pins in total and all these 9 pins are used for different purposes.
The two of these pins most commonly used are TX (transmitter) and RX (Receiver).
So, using these two pins we send our data from one place to another.
Now I hope that you have got the pretty basic idea of What is Serial Port but if not then you should read What is Serial Port?
Now let’s have a look at Arduino Serial Port first, before having a look at Arduino Serial Read.
Serial Port in Arduino
All Arduino boards have Serial Ports on them.
If we talk about Arduino UNO, then it has only one serial port on it and it is located at pin 0 and pin 1.
If you look closely at Arduino UNO board then you can see a little TX is written on its pin # 1 and a little RX is written on its pin # 0, as shown in below figure:
So, now we have got the Serial Port on Arduino UNO which we know are at pin # 0 and pin # 1, now in the next part, we are gonna have a look at How to use Arduino Serial Read and get data from this Serial Port.
How to use Arduino Serial Read ?
Arduino Serial read command is used for reading any data available at the Serial Port.
I have also designed a Proteus simulation which you can download from below button, and I have explained this simulation in the last step of this tutorial:
Download Simulation & Code
For example, you have some module let’s say GPS module (most of the GPS module works at serial port).
So, when you connect your GPS module with Arduino, you have to connect the TX pin of GPS with RX pin of Arduino.
Now the TX pin of GPS will be sending / transmitting the data and because this pin is connected with the RX pin of Arduino, so Arduino will keep receiving the data.
So, that’s how Serial Port works.
Now the data is coming to Arduino but you have to write some code to read this incoming serial data and then save it in some space.
So, here the Arduino Serial Read command is used.
Arduino Serial read command reads the incoming data from Serial Port and then saves it in some variable.
Here’s the syntax of Arduino Serial Read command:
char data = Serial.read();
One important thing is, in order to make Arduino Serial Read command work, you have to first initialize the Serial Port in Arduino, as shown below:
Serial.begin(9600);
Note:
Arduino USB Port which is plugged into the computer and is used for uploading the code, also works on the same serial port.
So, if you have anything plugged in the pin # 0 of Arduino then you can’t upload the code in Arduino.
Now, let’s design a simple example in which we will be receiving data from Serial Port and then saving it in some variable.
So, connect your Serial device with your Arduino board and now upload the below code in your Arduino board:
Now, you need to open the Serial Monitor of Arduino which is used for debugging purposes.
So, whenever you write something on Serial Port then its got printed in the Serial monitor.
So, whatever you will be receiving in the Serial Port you will get int the Serial Monitor.
Here’s some random data of GSM module coming on serial port and showing in serial monitor:
How to use Arduino Serial Read in Proteus?
So, now let’s design a small Proteus simulation in which we will see how to use Arduino Serial Read.
Proteus doesn’t have Arduino by default in it, so you need to first download this Arduino Library for Proteus and then you will be able to simulate your Arduino board in Proteus.
So, design a simple circuit as shown in below figure:
In the above figure I have placed an LCD and I will get the data from serial port and then I will print that data on LCD.
So, in simple words, whatever I type in Virtual terminal will be shown on LCD.
You also need to download this New LCD Library for Proteus to get this amazing LCD in Proteus.
So, now use the below code and Get your Hex File from Arduino Software:
Now when you start the Proteus simulation then first screen will look something like this:
Now whatever you write in your Serial Port, will show on the LCD as shown in below figure:
That’s how the Arduino Serial Read works.
You can download this Proteus simulation and the Arduino code by clicking the Download button given in the start of this post.
So, that’s how you can use the Arduino Serial Read command and can do your task. If, its still difficult for you then let me know on comments and I will try my best to resolve your issues. Thanks.
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Category: ArduinoBy Syed Zain Nasir2 Comments
Author: Syed Zain Nasir
https://www.theengineeringprojects.com/I am Syed Zain Nasir, the founder of <a href=https://www.TheEngineeringProjects.com/>The Engineering Projects</a> (TEP). I am a programmer since 2009 before that I just search things, make small projects and now I am sharing my knowledge through this platform.I also work as a freelancer and did many projects related to programming and electrical circuitry. <a href=https://plus.google.com/+SyedZainNasir/>My Google Profile+</a>
Created on: 2 August 2012
The Arduino Uno can send data (such as a text message) to the PC over the USB cable. The Arduino IDE has a serial monitor window that can be opened and will receive and display the data sent from the Arduino board. Data can also be sent to the Arduino board from the serial monitor.
This serial communication is very useful for controlling electronics that is connected to (interfaced to) the Arduino board from the PC. It can also be used to debug (find errors in) Arduino programs when writing new programs.
Arduino Ide Clear Serial Monitor
The following videos show what you will achieve in this tutorial.
Transmit a message from the Arduino to the PC:
Receive characters from the PC and transmit a message back to the PC:
Prerequisites
Complete tutorial 3 - Starting with Arduino before attempting this tutorial.
Components
All that is needed is an Arduino Uno board, standard USB cable and PC with the Arduino IDE software installed. You will already have these if you have completed tutorial 3.
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Sending Data to PC from the Arduino
Copy the serial_tx_msg Arduino sketch below and paste it into the Arduino IDE.
Serial Monitor Free
Compile the program by clicking the 'Verify' button in the Arduino IDE. Upload the program to the Arduino board by clicking the 'Upload' button.
Now start the serial monitor by clicking the 'Serial Monitor' button in the Arduino IDE. The figure below shows the location of the serial monitor in Arduino IDE version 1.0 (top) and Arduino IDE version 0022 (bottom).
The serial monitor window should display a new 'Hello, world!' message every second. Note that the TX LED on the Arduino board lights up.
Clear Serial Monitor Arduino Download
Sending Data from the Arduino to the PC
Copy the serial_rx_msg sketch below and paste it into the Arduino IDE.
This program receives data from the PC and then transmits it back to the PC with an additional message. It demonstrates receiving and transmitting data on the Arduino board.
In the Arduino IDE, verify and then upload the serial_rx_msg program to the Arduino board. Start the serial monitor program and enter a text character or sentence in the top field (to the left of the Send button). Click the Send button (or press Enter) to send the character or sentence.
For each character received, the Arduino board will send back 'You typed: ' and then the character that you typed. Free ps3 games download usb.
Note that the TX and RX LEDs switch on for a brief moment when clicking the send button. This shows that data was sent and received.
Now that you know how the serial monitor works, we can use it in future Arduino projects.
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