Raspberry Pi 4 Model B - 4G RAM

The Raspberry Pi 4 was released by the Raspberry Pi Foundation in June 2019. It builds upon the success of its predecessors, offering enhanced performance, connectivity, and versatility. The Raspberry Pi 4 is designed to cater to a wide range of applications, from educational projects to DIY electronics, home automation, media centers, and more.

Raspberry Pi 4 B offers ground-breaking increases in processor speed, multimedia performance, memory, and connectivity compared to the prior-generation Raspberry Pi 3 B+, while retaining backwards compatibility and similar power consumption. For the end user, Raspberry Pi 4 B provides desktop performance comparable to entry-level x86 PC systems.

Note: This Raspberry Pi 4 has 4GB of RAM. You can switch to 8GB version by click on this link.

Key Features of the Raspberry Pi 4 4G:

• Processor: Broadcom BCM2711 Quad-core ARM Cortex-A72 (64-bit) at 1.5GHz
• RAM: 4GB of LPDDR4 RAM. (Also Available with options for 2GB, or 8GB)
• Video Output: Supports dual-monitor setups with two micro HDMI ports, each capable of outputting up to 4K resolution at 60Hz
• USB Ports: Features two USB 3.0 ports for faster data transfer, in addition to two USB 2.0 ports.
• Networking: Gigabit Ethernet alongside wireless networking with Wi-Fi 802.11ac and Bluetooth 5.0
• GPIO Pins: Maintains a 40-pin GPIO (General Purpose Input/Output) header, allowing for hardware interfacing and DIY electronics projects
• Power Supply: Uses USB Type-C for power, providing a more robust and standardized power connection.
• Thermal Management: The Raspberry Pi 4 includes improved thermal management to handle the increased power consumption and prevent overheating, allowing for sustained high performance.

Raspberry Pi 4 4GB RAM Use Cases:

• Desktop Computing: The Raspberry Pi 4 is capable of serving as a basic desktop computer, suitable for tasks such as web browsing, word processing, and lightweight programming.

• Media Centers: With its 4K video support, the Raspberry Pi 4 can function as a media center, running applications like Kodi or Plex for streaming content.

• Educational Projects: The Raspberry Pi 4 continues the tradition of being an excellent tool for educational purposes, providing a cost-effective platform for learning programming, electronics, and computer science.

• IoT (Internet of Things): Its GPIO pins make it well-suited for IoT projects, allowing users to interface with sensors, actuators, and other hardware components.
• Server Applications: The enhanced processing power and connectivity options make the Raspberry Pi 4 suitable for lightweight server applications, home servers, or network-attached storage (NAS) setups.

The Raspberry Pi 4 has gained widespread adoption due to its improved specifications, making it a versatile and powerful tool for a variety of projects across different domains. Its affordability and extensive community support further contribute to its popularity among hobbyists, educators, and DIY enthusiasts.

Raspberry Pi 4 B GPIO Pinout:

The Raspberry Pi 4 Model B features a 40-pin GPIO (General Purpose Input/Output) header that allows users to interface with various hardware components and peripherals. Here's a brief overview of the GPIO pinout for the Raspberry Pi 4:

• Pins labeled as GPIO refer to General Purpose Input/Output pins.
• Pins labeled as +3V3 and +5V are power pins providing 3.3 volts and 5 volts, respectively.
• GND refers to ground pins.
• Other pins have specific functions, such as I2C (SDA1, SCL1), UART (TXD0, RXD0), SPI (MOSI, MISO, SCLK, CE0, CE1), and more.

To check the pinouts of Raspberry Pi 4 in Raspbian OS (now known as Raspberry Pi OS), you can use various command-line tools and utilities. Here are some methods:

GPIO Utility:

The GPIO utility provides a command-line interface to query and configure the GPIO pins. Open a terminal on your Raspberry Pi and run the following commands:

# Install the GPIO utility if not already installed
sudo apt-get update
sudo apt-get install wiringpi
# Run the gpio readall command to display the pinout
gpio readall

This will provide a table with the status and function of each GPIO pin.

Raspi-GPIO Utility:

The raspi-gpio utility is another tool for inspecting and manipulating GPIO pin status. Run the following commands:

# Install the raspi-gpio utility
sudo apt-get update
sudo apt-get install raspi-gpio

# Run the raspi-gpio readall command
raspi-gpio readall

This will display the GPIO pinout similar to the GPIO utility.

Pinout Command:

The pinout command provides a graphical representation of the GPIO pinout. If it's not installed, you can install it using the following:

# Install the pinout command
sudo apt-get update
sudo apt-get install python3-gpiozero
# Run the pinout command
pinout

This will show a visual representation of the GPIO pins and their functions.

What you need to get started with Raspberry Pi 4B 4GB:

To get started with the Raspberry Pi 4 Model B single-board computer (SBC), you'll need a few essential components. Here's a basic list to help you get started:

• MicroSD Card: A microSD card is required for storing the operating system and your data. It's recommended to use a high-quality, high-capacity microSD card (at least 8GB) like this one for better performance.
• Power Supply: The Raspberry Pi 4 uses a USB Type-C connector for power. Ensure you have a compatible power supply with a rating of 5V and at least 3A to provide sufficient power to the Pi. You can get the original Raspberry Pi 4 power adapter here.
• Micro HDMI Cable: The Raspberry Pi 4 features dual micro HDMI ports for video output. Depending on your display, you may need a micro HDMI to HDMI cable. If you have a HDMI cable and want to use it, you can get this Micro HDMI to HDMI converter.
• Display: A monitor or TV with an HDMI input for connecting to the Raspberry Pi. Ensure it supports the resolution you plan to use.
  • There are HDMI displays of different sizes on the site, from which you can choose the version you want. Some displays have a touch screen and some don't. Some of touch screen are resistive and some other are Capacitive. So, be careful in choosing between them.
• Keyboard and Mouse: USB or wireless keyboard and mouse for interacting with the Raspberry Pi. There are official Raspberry Pi keyboard at store that you can get it.
• Case (Optional): While not strictly necessary, a case can help protect your Raspberry Pi and keep it dust-free. There are various cases available, ranging from simple to more elaborate designs.
• Cooling (Optional): Depending on your usage, you may consider adding a heatsink or fan for cooling. The Raspberry Pi 4 can generate more heat than previous models, especially under heavy loads. You can get a case with cooling function like this one to extend the life of your Raspberry Pi.
• Operating System (OS): Download and install an operating system on your microSD card. The official Raspberry Pi OS (formerly Raspbian) is a popular choice and comes with many pre-installed applications.
• Ethernet Cable (Optional): If you prefer a wired internet connection, you can use an Ethernet cable like this to connect your Raspberry Pi to your router or network switch.
• Accessories (Optional): Depending on your projects, you may need additional accessories like sensors, LEDs, breadboards, and other components for experimentation and building projects. There are various shields you can get to test it with Raspberry Pi.

What you can do with 8GB version of Raspberry Pi and not with 4GB version

The primary difference between the 4GB and 8GB versions of the Raspberry Pi 4 lies in the amount of available RAM. The increased RAM in the 8GB version can be advantageous for certain applications and workloads, but for many general-purpose uses, the 4GB version may be sufficient. Here are some considerations:

Use Cases for 8GB Raspberry Pi 4

• Memory-Intensive Applications: Running multiple memory-intensive applications simultaneously may benefit from the additional RAM. This includes tasks like large-scale data processing, virtualization, or using memory-hungry software.
• Virtual Machines: If you plan to use your Raspberry Pi 4 as a host for virtual machines using hypervisors like QEMU or others, the 8GB version can provide more room for allocating memory to VMs.
• Software Development: For complex software development projects or compiling large codebases, the extra RAM can be beneficial.
• RAM Disks: Creating RAM disks for temporary storage or caching purposes can make use of the additional RAM, resulting in potentially faster access times.
• Multitasking with Large Files: If you frequently work with large files, such as high-resolution images or video editing, the extra RAM can help in managing these files more efficiently.

Use Cases Common to Both Versions

• Web Browsing: Casual web browsing and accessing standard websites are generally feasible on both the 4GB and 8GB versions.
• Media Playback: Streaming video, audio playback, and other media-related tasks are well within the capabilities of the 4GB version.
• Home Servers: Setting up home servers for file sharing, media streaming, or light-duty server tasks can be accomplished with the 4GB version.
• Educational Projects: The 4GB version is suitable for various educational projects, learning programming, and experimenting with hardware.
• IoT Projects: Internet of Things (IoT) projects, sensor monitoring, and simple automation tasks are well-supported by the 4GB version.

FAQs

sudo raspi-config

vcgencmd measure_temp