All about the Raspberry Pi 4 & Raspberry Pi 400

Products

Discover the world of Raspberry Pi 4 and Raspberry Pi 400We take a closer look at our products, their specifications, use cases and why they are revolutionizing computing for makers, educators and professionals.

Introduction

Since their launch Raspberry Pi have transformed theembedded computing and DIY. The range Raspberry Pi 4 and Raspberry Pi 400 represent the pinnacle of power, versatility and accessibility. Whether you're a home automation enthusiast, a developer or a teacher, this ultimate guide reveals everything you need to know about these flagship products to boost your creativity and your projects.

1. General presentation

1.1 Raspberry Pi 4: Power in a compact package

Launched in June 2019, the Raspberry Pi 4 is equipped with a quad-core ARM Cortex-A72 processor running at up to 1.5 GHz, available in several memory configurations (1, 2, 4 and even 8 GB RAM). Major enhancements include :

  • Enhanced connectivity USB 3.0 ports, Gigabit Ethernet, dual micro HDMI outputs to support up to 4K dual display.
  • Graphics and multimedia Capable of handling demanding graphics applications and multimedia environments.
  • Enhanced GPIO interface For connecting sensors, modules and HATs, opening the door to countless DIY projects.

1.2 Raspberry Pi 400: The revolutionary keyboard computer

Released in November 2020, the Raspberry Pi 400 integrates a Raspberry Pi 4 into a complete keyboard, offering a ready-to-use solution for learning and everyday use. Its strengths are :

  • Ergonomic design A compact keyboard with an elegant design that integrates the system into a single unit.
  • Optimized performance A slightly overclocked version for smooth office and multimedia use.
  • Ease of use Ideal for education and environments where simplicity and integration are essential.

2. Technical data and comparison

2.1. Processor and performance

  • Raspberry Pi 4 Quad-core ARM Cortex-A72, frequency up to 1.5 GHz, with options for up to 8 GB RAM. Ideal for demanding applications such as video editing, lightweight virtualization or web server development.
  • Raspberry Pi 400 Based on a similar system, but optimized for desktop use, with an overclocked processor and improved thermal management.

2.2 Connectivity

Both models offer :

  • USB and Ethernet The Pi 4 features 2 USB 3.0 ports and 2 USB 2.0 ports, while the Pi 400 integrates similar connectivity in a keyboard format.
  • Video outputs Dual micro HDMI for the Pi 4, enabling 4K output; the Pi 400 offers a smooth graphics experience for office and multimedia applications.
  • Wi-Fi and Bluetooth Integrated in both models, guaranteeing fast, stable wireless connectivity.

2.3 GPIO interface and scalability

Both platforms benefit from a full set of GPIO pins (40 pins) that facilitate the integration of sensors, modules and other accessories. This scalability is essential for DIY projects ranging from robotics to home automation and IoT.

3. Use cases and applications

3.1. DIY and educational projects

  • Learning laboratories The Raspberry Pi 4 and the Pi 400 are ideal for introducing students to programming, electronics and IoT, thanks to their easy-to-use interfaces and extensive support community.
  • Creative projects From media centers and retro gaming to the creation of connected objects, these models offer an ideal platform for exploring innovation.

3.2. Domestic and professional applications

  • Home automation Control lighting, security and connected devices in your home via web interfaces and mobile applications.
  • Personal servers Set up a web server, NAS or even a local AI server with the performance of the Raspberry Pi 4.
  • Corporate use From interactive kiosks to industrial control systems, the Raspberry Pi 4 and Pi 400 are ideal for a multitude of professional applications.

5. Testimonials and case studies

5.1. User testimonials

Makers, educators and professionals testify to the transformation that the Raspberry Pi 4 and Pi 400 bring to their projects.

  • 1. Connected smart home
    • Project : Use the Raspberry Pi 5 to automate and control your entire home (lighting, heating, security).
    • Real-life testimonial :
      • "Thanks to my Raspberry Pi 4, I've been able to install a complete home automation system in my house. I control everything via a web interface and my smartphone. It's amazing how a small computer can transform our daily lives!"
      • - Sophie D., Raspberry Pi Community forum user
      • (Source: discussions on Raspberry Pi Forums)
  • 2. Revolutionary digital jukebox
    • Project : Create an interactive jukebox with Raspberry Pi 4, featuring touch-sensitive buttons and LED displays to broadcast and control your music.
    • Real-life testimonial :
      • "My Raspberry Pi 4 has enabled me to design a digital jukebox that has literally transformed my living room. It's a project that's both fun and very practical for bringing the family together around music."
      • - David L., maker and Hackaday contributor
      • (Source: Hackaday feedback and testimonials posted on Instructables)
  • 3. Mini-Satellite CanSat
    • Project : Build a mini-satellite (CanSat) with a Raspberry Pi 5 to collect and transmit environmental data at altitude.
    • Real-life testimonial :
      • "Taking part in the CanSat project with our Raspberry Pi 5 has been a transformative experience. We've learned how to integrate sensors and transmit data in real time, and it's fascinating to see that a machine the size of a can can explore space!"
      • - Clara, engineering student, testimonial published by the Raspberry Pi Foundation
      • (Source: article "CanSat: A Tiny Can-Sized Raspberry Pi Powered Satellite" on raspberrypi.com)
  • 4. Personal server and Web applications
    • Project : Use the Raspberry Pi 4 to host a personal or professional web server, managing internal applications at low cost.
    • Real-life testimonial :
      • "We adopted the Raspberry Pi 4 to set up our in-house web server. The performance is top-notch, and the running costs are unbeatable for our SME. A wise choice to reduce our IT costs."
      • - Marc, Technical Director at TechSolutions, back on an IT blog
      • (Source: testimonials published on IT blogs and SME forums)
  • 5. Educational Platform and Pedagogical Tools
    • Project : Bring the Raspberry Pi 400 into the classroom to teach programming and electronics interactively.
    • Real-life testimonial :
      • "The Raspberry Pi 400 has revolutionized my computer classes. My students are captivated by this keyboard-computer that makes learning fun and concrete. It has become an indispensable tool in our school."
      • - Ms Lefèvre, technology teacher, testimonial collected on an educational blog dedicated to Raspberry Pi
      • (Source: feedback from sites such as RaspberryPi.org and The MagPi)

5.2. Case studies

  • Smart home How a group of makers automated lighting, security and climate control in a connected home.
  • Personal server Transforming a Raspberry Pi 4 into a powerful web server, capable of hosting applications and managing databases.
  • Educational platform Using the Raspberry Pi 400 in schools to teach programming and electronics.

6. Future prospects and innovation opportunities

6.1. Towards an ever more connected ecosystem

Technological advances in the Raspberry Pi range reinforce the trend towards IoT and home automation. New interfaces and increased power pave the way for ever more ambitious and collaborative projects.

6.2. Impact on education and industry

The ease of use and versatility of the Raspberry Pi 4 and Pi 400 make them essential tools for technical education and industrial innovation. These products stimulate creativity, promote hands-on learning and enable companies to develop tailor-made solutions at lower cost.

6.3. A promising future for Makers

The rise of online communities, hackathons and project-sharing platforms reinforces the Raspberry Pi's position as a reference tool for all makers. In 2025, DIY innovation will never have been so accessible and exciting.

Conclusion

The Raspberry Pi 4 and Raspberry Pi 400 range embodies the revolution in embedded computing and DIY. With powerful performance, enriched connectivity and unrivalled scalability, these products open up a world of possibilities for education, home automation, IoT and much more. In 2025, they continue to inspire innovative projects and transform the way we interact with technology every day.

Whether you're a beginner or an expert, this ultimate guide will help you discover, understand and fully exploit the potential of the Raspberry Pi 4 and Pi 400. Get ready to push back the boundaries of innovation and join the global community of makers who are redefining the future of computing.

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