Arduino Raspberry Pi
Raspberry Pi Arduino Serial Communication – Everything You Need To Know
In this tutorial I’ll show you how to communicate between a Raspberry Pi and an Arduino board via Serial communication.
I’ll quickly explain what is Serial communication. Then you’ll see how to setup your hardware and software, and we’ll dive into the Python code (Cpp for Arduino). A basic example at first, leading to a more complete application using a Raspberry Pi, an Arduino, and other electronic devices.
This tutorial will work with a Raspberry Pi 4 (and earlier: 3B, 3B+) board, and any Arduino board. I’ll use mostly Arduino Uno but will give more details about the differences between Arduino boards when it comes to Serial communication.
>> I also made a complete step by step video tutorial, to go from zero to bidirectional communication with Serial in 1h
The easiest way is to use a USB cable between both board.
On the Raspberry Pi side, a simple USB connector is all you need. You can choose any of the 4 USB ports available on the board.
For Arduino, you will use the USB port that you use to upload code from your computer (with the Arduino IDE) to your board. Here the USB connector will depend on which version you have. For boards like Arduino Uno and Mega, the connector will be different from Arduino Nano, and from Arduino Zero.
For this example I’ve used an Arduino Uno board.
Arduino is an open-source electronics platform that combines a programmable circuit board (hardware) with a development environment (software) for writing and uploading code to the board to perform specific functions. It is known for its user-friendly nature, affordability, and extensive community support, which makes it widely accessible, particularly for beginners.
The platform's software, known as the Integrated Development Environment (IDE), supports programming in C and C++ languages and is compatible with Windows, Macintosh OSX, and Linux. Arduino boards can be connected to a variety of components, such as sensors, motors, and OLEDs, to perform specific tasks.
Raspberry Pi boards are essentially complete computers on a printed circuit board the size of a credit card. These devices contain a central processing unit (CPU), random access memory (RAM), WiFi and Bluetooth connectivity, input/output connectors, Ethernet and USB ports, an audio jack for headphones, HDMI ports to connect monitors, and a micro SD slot. These boards have no internal storage, so an SD or microSD card is necessary for these boards to function.
Raspberry Pi boards can connect to peripherals such as keyboards, mice, and monitors, turning them into fully functional desktops. With built-in Ethernet ports, they can connect to the Internet for browsing, file transfers, and networked tasks. Equipped with powerful CPUs, Raspberry Pi boards are capable of running full operating systems and handling multiple complex computing tasks, making them versatile tools for a wide range of applications.
What is Raspberry Pi?
Raspberry Pi, on the other hand, is a series of small, low-cost single-board computers1. It was designed with the aim of promoting computer science education and making computing accessible to everyone1. The Raspberry Pi board comes equipped with a processor, memory, USB ports, Ethernet or Wi-Fi connectivity, and a range of other interfaces, all packed into a credit card-sized form factor1. It runs a full-fledged operating system, typically a Linux-based distribution like Raspberry Pi OS. This allows users to use a wide range of programming languages such as Python, C, C++, and Java to develop applications. For instance, you can turn a Raspberry Pi into a media center by installing the appropriate software and connecting it to a TV and external storage. It can then play videos, music, and even stream online content.
The Synergy between Arduino and Raspberry Pi
> Complementary Capabilities: Arduino excels at handling real-time input and output tasks, making it ideal for interfacing with sensors and actuators in the physical world. Raspberry Pi, with its more powerful computing capabilities and support for a full operating system, is better suited for tasks that require complex data processing, networking, and running high-level applications. When combined, they can create projects that leverage the best of both worlds. For example, in a home automation project, the Arduino can be used to interface with light sensors, motion detectors, and door locks, while the Raspberry Pi can handle the user interface, data storage, and communication with other devices over the network.
> Ease of Use and Accessibility: Both Arduino and Raspberry Pi are designed to be user-friendly, even for those with little to no prior experience in electronics or programming. The Arduino's simple programming model and the Raspberry Pi's beginner-friendly operating system and programming languages make it easy for enthusiasts to get started quickly. There are also vast online resources, including tutorials, forums, and open-source code libraries, that provide support and inspiration for users at all levels.
> Versatile Project Applications: The combination of Arduino and Raspberry Pi has been used in a wide variety of projects. In the field of robotics, they can be used to build autonomous robots that can sense their environment, make decisions, and perform tasks. In the area of Internet of Things (IoT), they can be used to create smart devices that can communicate with each other and with the cloud. In the educational sector, they are used to teach students about electronics, programming, and problem-solving skills.
If you're working on an electronics project—whether it's for a DIY automated device, a digital sign, or an IoT device—you'll need to choose the right hardware. This often comes down to the debate of Arduino vs Raspberry Pi.
In this article, we’ll compare these two development boards side-by-side to help you decide which one best suits your project needs.
Arduino and Raspberry Pi have each carved out a significant niche in the world of DIY electronics and computing. Their unique capabilities and the synergy between them have opened up a world of possibilities for innovation and creativity. Whether you are a hobbyist looking to build a cool project, a student learning about electronics and programming, or a professional seeking to develop the next generation of smart devices, the combination of Arduino and Raspberry Pi is a powerful tool that can help you bring your ideas to life. So, grab your boards, fire up your IDEs, and start exploring the endless potential of this dynamic duo. The only limit is your imagination.
3.5 inch TFT colorful screen module 320X480 UHD LCD support Mega2560 DUE UNO |
Compatible with Raspberry Pie Generation 3/4 type B Red&White Case Suitable for Generation 3 / Generation 4 Box PI |
ZERO camera cable adapter cable Raspberry Pi CAMERA special FFC cable 15CM 30CM |
ENC28J60 Network Adapter Module PI0 PIW Compatible with Raspberry Pi ZERO |
Raspberry Pi 4B special aluminum heat sink with adhesive backing RaspberryPi4 motherboard CPU memory multi-color heat sink |
1080p720p mini camera module 5MP webcam compatible with Raspberry pi2B/3B/4B |
Raspberry Pi 4B 3.5" Resistive LCD Raspberry Pi Touch Screen Display ABS Housing |
Compatible with Raspberry Pi 3B/3B+/4B Infrared Night Vision Surveillance Camera Module 500W 1080P |
3.2/5.0 Inch TFT LCD Screen Shield for DUE/Taijiuino |
Raspberry Pi 3 B/Generation 2/B+ VGA666 Module Module 3B Expansion Board |
Raspberry Pi 3 generation B+/zero power supply US standard 5V 3A Micro USB power head adapter |
Suitable for Raspberry Pi 3 generation B heat sink Raspberry Pi heat sink cooling with adhesive stickers |
Raspberry Pi fan Support Raspberry B+/B model shell |
18650 battery holder V3 development board compatible Raspberry Pi Raspberry Pi 3 overcharge protection 5V |
Raspberry Pi3 generation B dedicated power supply 5V2.5A |
Raspberry Pi cooling fan 3CM 3007 split small fan 5V 0.2A support 3B/3B+/4B |
OV2640 module OV2640 camera 200W pixel support YUV RGB JPEG send row holder |
ov7670 camera module module STM32 driver microcontroller e-learning integration |
Raspberry Pi Generation 3/3B+ Clear Acrylic Case for Raspberry Pi 4 Model Case |
Compatible with Raspberry Pi Type B 3.5" Resistive LCD Touch Screen Display Control Panel |
Raspberry Pi X850 mSATA SSD Hard Drive Expansion Board NAS Ideal Storage Solution Supports up to 1TB |
Compatible Raspberry Pi Remote Control Module Media Remote Control Wireless Module Remote Control Accessory Single Accessory Module |
raspberry pi power USB switch power cable USB to micro USB with switch |
Raspberry Pi A+ B+ Generation 2B Expansion Board Support XBEE Generation 3 Development Board |
Raspberry Pi 3B/3B+/4B special accessories T-type GPIO expansion board 40P cable development board |
4 degrees of freedom acrylic robotic arm robot manipulator for Arduino DIY kit robot |
Raspberry Pi 3B/3B+/4B housing multi-layer cluster housing laminated housing acrylic housing Fan mountable |
Support Raspberry Pi 3B/3B+ Raspberry pi aluminum cooling enclosure Compatible fan and heatsink |
Raspberry Pi camera mount 500W/8 million camera acrylic housing for Raspberry Pi |
Raspberry Pi 3B/3B+/4B GPIO multifunction expansion board raspberry pi gpio plug and play |
5inch Raspberry Pi 3B/3B+/4B LCD Touch Screen Raspberry Pi5inch HDMI Display |
Suitable for Raspberry Pi 3B/3B+ case ABS case GPIO reserved opening design Fan case can be used |
37/45 Sensor Kits Low Price for UNO R3 Raspberry Pi Sensor Kits |
4" Raspberry Pi HDMI Display Raspberry Pi Touch Screen IPS HD 800X480 3B+/4B |
Raspberry Pi metal 4 generation shell Raspberry Pi 4 generation b + aluminum box 4B assembled heat sink case |
Raspberry Pi 4 generation development board ABS injection molding shell 4B can be installed cooling fan to protect the case box |
Raspberry Pi Raspberry Pi connect monitor hdmi cable version 1.4 Ultra HD cable soft cable hard case |
Raspberry pi dedicated heatsink 3 pieces without package |
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