One serial port is used for entering the command and the other serial port is used for sending the command to the Receiver.Although for most of the projects Arduino Uno or Arduino Mega is more than enough to design advanced level projects like CNC machines, 3D Printers, etc.There are times when the single Arduino Uno or Arduino Mega, or any other Arduino board is not enough to complete the project, then in a situation like this you can Serial connect multiple Arduino boards.
Serial Communication Between Two Arduino How To Use TheAfter reading this article, you will be able how to use the Serial.read() and Serial.wrtie() functions.
Serial Communication Between Two Arduino Serial Port IsI will start with the very basics and after you learn the basic concept of Serial communication, then I will take it to the next level and we will do some advanced level things. Apart from the Serial communication between two Arduino boards you can also use the same concept in performing serial communication with all other serial supported devices like example. So thats why I decided to write an easy to follow tutorial on the Serial Communication between two Arduino boards. I may make a commission if you buy the components through these links. The RX of one Arduino Uno board is connected with the TX pin of the other Arduino board and similarly the TX pin is connected with the RX pin of the other Arduino board. Make sure the grounds of both the Arduino boards are connected together. This means we will need to write two programs, one for the Sender Arduino and the other for the Receiver Arduino. The purpose of this program is to send the message Hello to the other Arduino board. The number 5 inside the brackets shows that this array can hold 5 characters. Inside the setup(), I activated the serial communication using the Serial.begin() function and selected 9600 as the baud rate. The setup() function executes only one time when the Arduino board is first turned ON. But this time instead using the Serial.write() function we use the Serial.readBytes() function to read the data. Make sure the Sender Arduino is powered up using a cable, adaptor, or you can even use the Receiver Arduino to power up the Sender Arduino, for this you will need to connect 5volts from the Receiver Arduino with the Vin pin of the Sensor Arduino. Again upload the code, and also make sure the right Arduino boards are selected. We will send commands on and off from the Arduino Mega to the Arduino Uno using Serial communication to control the onboard LED connected with the Arduino Uno pin number 13. The TX1 of the Arduino Mega is connected with the RX0 of the Arduino Uno. The 5v from the Arduino Mega is connected with the Vin pin of the Arduino Uno. This time we will power up the Arduino Uno using the Arduino Megas 5 volts. Make sure, the grounds of both the Arduino boards are connected together. My recommendation is do the wiring after you upload the codes.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |