Is it possible to communicate between multiple Arduinos?

Is it possible to communicate between multiple Arduinos?

It can be practical, especially in home automation projects, to communicate between several devices. One of the commonly used techniques is the I2C (or TWI) protocol. The I2C protocol is a method which makes it possible to connect several “Master” cards and several “Slave” cards and to communicate up to 128 devices.

Which is serial bus protocol does Arduino use?

PJON is a bit banged serial bus protocol for multiple nodes. You may find it useful. PJON™ (Padded Jittering Operative Network) is an Arduino compatible, multi-master, multi-media communications bus system.

Can a Rasberry Pi communicate with an Arduino?

With the I2C protocol, it is also possible to communicate between different systems (sensors, LCD screen, Raspberry Pi, etc.). An interesting example is the communication between several Arduino boards.

What does an I2C bus do for Arduino?

The I2C protocol is a method which makes it possible to connect several “Master” cards and several “Slave” cards and to communicate up to 128 devices. It allows asynchronous connections between several components to share information via a “common bus”.

How are Arduinos identified on the I2C bus?

I have two programs: one for the master Arduino, and a second for all the slave Arduinos. Before uploading the program to each slave Arduino, change the node I2C address number to make sure each Arduino node on the I2C bus can be identified with a unique address.

How are microcontrollers networked in an Arduino circuit?

Or, depending on your project design, you simply modularize your circuit by spreading your sensors and components over multiple microcontrollers. Then network the microcontrollers using a protocol such as I2C.

How does four Arduino slave units work together?

Four Arduino slave units read from accompanying sensors then send their respective sensors’ data to a master Arduino unit for processing.