Have you ever heard of Raspberry Pi or seen a Raspberry Pi but not knowing what it means or do? No worries as today we are going to answer all of your questions about the Raspberry Pi today!
The content of this blog will cover:
- What is a Raspberry Pi?
- What can you do with the Raspberry Pi?
- What makes the Raspberry Pi Special?
- Types of Raspberry Pi available now
- What’s on the board? (Hardware)
- Raspberry Pi Software
- Getting Started with Raspberry Pi
- Helpful Resources and Tutorials
What is a Raspberry Pi?
To put it in simple terms, the Raspberry Pi is a computer itself!
Huh? But it is so small, how can it be a computer?
Well, believe it! The Raspberry Pi is a low cost, credit-card sized computer that runs Linux. To use it, simply connect it with a USB phone charger to power it, plug in a mouse and keyboard, connect it to a TV and monitor together with an SD card stored with an operating system just like the one in your Phone and you are good to go! You now have yourself a working desktop at your disposal!
Not only that, the Raspberry Pi is able to control and interact with electronic components such as sensors and actuators and explore the Internet of Things (IoT).
Want to learn coding and programming? With the Raspberry Pi, people of all ages can learn how to program in languages like Scratch and Python too!
Who created it?
The Raspberry Pi Foundation created the Raspberry Pi! The foundation was formed in 2008 with the goal to advance the education of adults and children particularly in the field of computers, computer science, and related subjects!
The first version of the Raspberry Pi launched in 2012 and there have been several iterations and variations released since then. Currently, the latest version is the Raspberry Pi 4 which features ground-breaking processing and performance speed!
How much does it cost?
The latest product in the Raspberry Pi family, the Raspberry Pi 4 has 3 versions available which are 1GB, 2GB and 4GB and they cost:
As you can see, the starting price for the 1GB version is only $35 to only $55 for the 4GB version! If you want more RAM, we currently also offer 8GB version for $75!
Is there a cheaper option?
That’s right! They cost less than your average movie ticket at just $5 and $10 respectively. Interested? We will talk more about them together with the Raspberry Pi 4 in the types of Raspberry Pi section.
What can you do with the Raspberry Pi? (Projects)
At under $55, with the Raspberry Pi small size and capabilities, there is ALOT that you can do with the Raspberry Pi. From homemade robots to retro game consoles, the Raspberry Pi can be used to build many different projects! Here are some kickass projects that you can make with the Raspberry Pi!
As the Raspberry Pi is a computer itself, why not build yourself a desktop! With the all-new Raspberry Pi 4, this computer can power two 4K screens at the same time, allow video and photo editing while having processing power to perform machine-learning!
As you can see from the above video which is an example of the Playstation System using your Raspberry Pi as a retro game console, you can now travel back in time and play your favourite retro games!
Why spend money on a Roku Box or Apple TV when you can just use the Raspberry Pi to build a home media centre to stream your favourite content using free operating systems!
With the Raspberry Pi, there are several things you can build including a Smart Mirror! This smart mirror can display weather, news, time, control smart plugs, cast videos, play songs and many more!
Do you know when you install Raspbian (Raspberry Pi Official OS), it comes along with a version of Minecraft Pi? But this is not an ordinary version of Minecraft as once you’ve got to grips with the in-game features, there’s an opportunity to break open the code and use programming language to manipulate things in the game world. Imagine learning programming skills from playing Minecraft! Wow!
Do you have a lot of files lying around like photos, videos, documents, movies, music on your hard drive? Afraid that they may run into drive failure?
With NAS, you do not worry about those problems anymore! NAS which stands for network-attached storage, allows you to store things like your movies, videos, pictures, etc on portable hard drives and external storage devices via your network!
Those were just a few of our favourite projects you can do with the Raspberry Pi! But that’s not all as with the Raspberry Pi, you can create more cool projects from a home security system to filming a stop motion film with the Raspberry Pi! The possibilities are endless.
Interested in what other things you can do with a Raspberry Pi? You can check out our blog on the Top 20 Raspberry Pi 4 Projects That You Must Try Now for more!
What makes the Raspberry Pi Special?
So, why should you use the Raspberry Pi compared to other Single board computers (SBC) out in the market? Well, here are some more reasons why you should use the Raspberry Pi!
Needless to say, the first reason will be the cost of the Raspberry Pi! At such a low cost, you get yourself a versatile small computer board that is perfect for a variety of tasks! As mentioned above, the Raspberry Pi 4 starts at only $35 and even with $5, you can get a Raspberry Pi Zero.
The Raspberry Pi community is one of the biggest reasons why you should get a Raspberry Pi compared to other single board computers out there!
The Raspberry Pi features one of the biggest communities and support for debugging. Furthermore, it also has many detailed tutorials and projects with good documentation which is very suitable for beginners to learn.
Huge amount of accessories
In the previous years, many add ons and accessories have become developed just for the Raspberry Pi from cases, displays to HATs. Some of my personal favourites are:
- Raspberry Pi Camera Module V2
- SeeedStudio Piboxy Case for Raspberry PI
- Raspberry Pi PoE HAT
- Raspberry Pi Sense HAT – Make your own Astro-Pi
- Coral USB Accelerator
Size and Portability
At a size of 85.6mm x 56.5mm, the Raspberry Pi 4 is the same size as your credit card which makes it very portable. Furthermore, the Raspberry Pi Zero has found its way inside many different projects as it is only 65 mm x 30 mm which makes it even smaller than the size of a credit card.
Types of Raspberry Pi
Over the years, many Raspberry Pi models have been developed with of total of 4 generations currently which are Pi 1, Pi 2, Pi 3 and finally the Pi 4. On the other hand, the Pi Zero is a spinoff of the original Pi 1 version but it is much smaller, cheaper with a few additional features.
Right now, as the Pi 1, 2 and 3 have been discontinued, we will only go through the new and better Pi 4 which is currently now on sale together with the Pi Zero as a cheaper option.
There is also a Raspberry Pi compute model available now which we will explain more about below!
Let us look at the Raspberry Pi 4 first:
As mentioned above, Raspberry Pi 4 Model B is the latest product in the Raspberry Pi range of computers. It offers ground-breaking increases in processor speed, multimedia performance, memory, and connectivity compared to the prior-generation Raspberry Pi 3 Model B+ while retaining backward compatibility and similar power consumption. For the end-user, Raspberry Pi 4 Model B provides desktop performance comparable to entry-level x86 PC systems.
It comes in 3 versions that varies on the size of RAM, so you can choose easily choose one according to your needs:
- Raspberry Pi 4 Computer Model B 1GB
- Raspberry Pi 4 Computer Model B 2GB
- Raspberry Pi 4 Computer Model B 4GB
This product’s key features include a high-performance 64-bit quad-core processor, dual-display support at resolutions up to 4K via a pair of micro-HDMI ports, hardware video decode at up to 4Kp60, up to 4GB of RAM, dual-band 2.4/5.0 GHz wireless LAN, Bluetooth 5.0, Gigabit Ethernet and USB 3.0 port.
The Raspberry Pi Zero and Zero W are computers that is smaller than your credit card which costs just $5 and $10 respectively which is only one-third of the price of the Raspberry Pi 4.
Despite its small size, it still offers decent computing abilities with a 1GHz, Single-core CPU and 512 MB RAM. For connection wise, it also has a single mini HDMI port, 2 micro USBs, HAT-compatible 40-pin header, unpopulated 40-pin GPIO connector and a CSI camera connector!
As you can see above, with a GPIO, SPI, I2C, UART, etc available on the Pi 0, it is definitely a cost-effective small board computer (SBC) for beginners to start electronics. In addition, you can practice soldering and solder on a 40 pin header pins which makes attaching other electronics easier.
With its small size and low cost, it has found its way into everything and users have been experimenting it with different types of projects from a Pi Zeror retro gaming system, Pi Zero homemade inflight entertainment system to even a Pi Zero power electric skateboard!
What is the difference between the Pi Zero and Zero W?
For the Raspberry Pi Zero W it even includes 802.11 b/g/n wireless LAN, Bluetooth(R) 4.1 and Bluetooth Low Energy (BLE) for your Wi-Fi and Bluetooth connection needs.
If you require Wifi for your projects, we highly recommend getting the Zero W as if you wish to get Wifi and Bluetooth on the original Pi Zero, not only will it be inconvenient and troublesome, it will cost much more too.
Raspberry Pi Compute Module
The Compute Module is designed for use in custom devices where capabilities of the Pi are desired but due to their size, don’t fit. What you are seeing now is a Raspberry Pi shrunken down to fit on a SODIMM (Same type of connector used for laptop memory) with onboard memory whose connectors can be customized to suit the user needs.
With the full flexibility of the Raspberry Pi CPU, this means more GPIOs and interfaces available compared to the Raspberry Pi board allowing users to design the module into a custom system easier.
With this in mind, the compute module is primarily designed for those who are going to create their own PCB.
If you want something simple which you can use straight out of the box, the Raspberry Pi 4 and Zero is recommended.
Interested in the compute module? Check out our guide to find out more about it!
What’s on the Raspberry Pi board?
Wonder what is on the board of the Raspberry Pi and their functions? Let us look at what is on the Raspberry Pi 4 board:
1)Micro SD Card Slot
This is where your Raspberry Pi stores information into a SD card from Operating systems, libraries and user programs.
2) 2 Lane MIPI DSI Display Port
This port is used for connecting an LCD panel using a 15-pin ribbon cable. This connector provides your LCD a fast high-resolution display interface for displaying video data directly from the Raspberry Pi GPU.
3) USB-C Power Port 5V / 3A
Your Raspberry Pi will require power to run. This port is used to power your Raspberry Pi using a USB-C plug similar to the one you use for your phone charger.
However, we recommend using the Official Raspberry Pi Power Supply as on certain occasions where your Raspberry Pi requires more power, using your mobile phone charger is not the most reliable. With poor power supply, your Raspberry Pi performance without a doubt will be affected.
4) 2 x Micro HDMI Ports
This port allows you to transmit both high definition audio and video over a single micro HDMI cable from your Raspberry Pi to a TV or monitor.
5) 2 Lane MIPI CSI Camera Port
This is a camera port where you connect a camera module like the Raspberry Pi Camera Module V2 to add camera functions to your Raspberry Pi where you can create projects like making a CCTV for home security.
6) 4 Pole Stereo Audio
With this 4 pole type connector, you can plug in stereo headphones where it will work like a headphone jack or you can plug in an A/V cable where you will get stereo plus video.
7, 8) 2 x USB 2.0, 2 x USB 3.0
These USB ports are used to connect a mouse and keyboard to the Raspberry Pi to provide the Pi with additional functionality. You can also connect other components such as a USB drive or webcams.
9) Gigabit Ethernet Port
This is used to connect your Raspberry Pi to a network using an ethernet cable. The Raspberry can also connect to a network via wireless LAN.
10) PoE HAT header
This is used to connect to a PoE HAT which allows you to power your Raspberry Pi while providing it with network connection using only one cable.
To learn more about PoE, you can check out our other blog on What is PoE and how to use PoE with the Raspberry Pi
11) 40 Pin General Purpose Input/Output Header
These allow you to connect electric components such as LEDs and buttons to your Raspberry Pi
12) 2.4 / 5GHz Wireless Bluetooth 5.0
This allows your Raspberry Pi to connect wireless to a network and Bluetooth.
Raspberry Pi Software
When it comes to software, there are a wide variety of operating systems available for your Raspberry Pi to suit your needs. They range from basic operating systems for new users to gaming operating systems, so which one should you use? Well if you are a new user, I recommend:
Raspberry Pi OS (previously known as Raspbian) is the official operating system for all models of the Raspberry Pi which is based on Linux-OS Debian. Using their easy installer, NOOBS you can easily install Raspberry Pi OS within minutes.
With the Raspberry Pi OS, they are mainly used for office suite, web browsing, programming using Python and DIY projects.
We recommend using this OS as it features regular updates, LibreOffice, an office suite for web browsing and emailing, etc and it is also easy to install if you are a beginner! In addition, being the official OS there are plenty of guides on Raspberry Pi OS and even if you encounter issues, you can easily find solutions online.
Along with the recent launch of the new 8 GB variant of the Raspberry Pi 4, Raspberry Pi 4 has a new 64-bit beta variant designed to take full advantage of the RAM upgrade.
Raspberry Pi HATs
Want to add functionality to your Raspberry Pi? By using Raspberry Pi HATs you can add various functionality from Wifi, CAN BUS, Displays, AI and voice functions to even 3D gestures. Let us take a look at some of our best selling Pi HATs!
The Grove Base Hat for Raspberry Pi ($9.9) provides a range of Digital, Analog, I2C, PWM and UART ports to meet all your expansion needs. Also, with the help of a built-in MCU, a 12-bit 8 channel ADC is made available to the Raspberry Pi.
Not to mention, this is compatible with our Grove modules which simplifies the process of you connecting your sensor modules. To learn more about Grove, click here.
This base HAT is for the Pi 4. We also have one for the Pi Zero!
This HAT allows you to add 3D gesture recognition and also motion tracking function to your Pi. This HAT is able to capture x y z position information, proximity sensing and touch sensing. It also supports tap and double click gestures.
ReSpeaker 2-Mics Pi HAT is a dual-microphone expansion board for Raspberry Pi designed for AI and voice applications. You can build more powerful and flexible voice products that can integrate with Amazon Alexa Voice Service, Google Assistant, and many others.
Want to control high voltage devices like your fans, lights, heaters or other household appliances with the Raspberry Pi?
With this Relay HAT, you can do that and build smart home projects! The Relay Shield utilizes four high-quality relays and provides NO/NC interfaces that control the load of high current. It also has four dynamic indicators show the on/off state of each relay.
Those were just some of our best selling Raspberry Pi HATs! Interested in more Raspberry Pi HATs? Check out all of the HATs we offer here!
Getting Started with Raspberry Pi
Now that you’ve known what is the Raspberry Pi, what you can do with it, what is on the board of the Raspberry Pi, and which software to use, you are ready to get started into the world of electronics and Raspberry Pi!
To get started with Raspberry Pi 4:
- To help you avoid all the hassle in getting all the individual components and to get started, we have helped you select the best starter kit regarding Raspberry pi 4 to assist you in your amazing Raspberry pi journey.
- Let us see what we need for a starter, firstly we need to charge the raspberry pi 4 so we have a power supply in the box for you, it is 5V3A type C wall adapter, perfectly compatible with Pi 4. A micro SD card with a card reader is necessary to get your pi running and a case with heat sink is critical to make your pi look tidy and cool it down.
- They are all in the box. Besides, there is also a micro HDMI to standard HDMI male cable to connect your pi with screen.
- It looks like you have get all the things you need to turn it into a computer. What if you only have a laptop on hand rather than a screen? Now you need an Ethernet cable to connect pi 4 with your laptop so you can get access to SSH to control your pi. This starter kit is a very thoughtful kit for starters to begin exploring the Pi world.
To get started with Raspberry Pi Zero:
- With this kit, it has everything you need to get your Raspberry Pi Zero W up and running. The micro TF card is also pre-installed with NOOBS (Raspbian OS) which saves you trouble.
- It comes with:
- Raspberry Pi Zero W
- Mini HDMI OTG Cable
- Micro USB OTG Cable
- 2×20 Pin male header and female header
- Official Raspberry Pi camera strip
- Pi Zero Case
- 8GB Micro TF card (Pre-installed with NOOBS)
- 5V 1.5 Power Adapter (US Standard)
Helpful Resources and Tutorials
To help you on your journey into the world of Raspberry Pi, here are some helpful resources that you can look at to get started and learn more about the Raspberry Pi!
Tutorials and Guides
Which Raspberry PI Operating Systems (OS) to use? – Learn about the various OS (Raspbian, OSMC, OpenELEC, Windows IoT Core, RISC operating system) you can use with the Pi.
Best Accessories Guide for Raspberry Pi 4 – List of accessories that you are recommended to get with your Pi 4
Cooling solutions: Raspberry Pi 4 Heat sinks vs Cooling Fans: Which one to use? – Under normal working load, the temperature of the board can reach up to 60 °C or even 70 °C after using the USB port. If you do some CPU-intensive work, the chip will soon reduce performance for protection purposes.That’s why you do need a heatsink or any cooling fan for the Raspberry Pi 4. Which one to get? Check out this guide to find out!
What is Power over Ethernet (PoE) and How to use PoE HAT with the Raspberry Pi – Find out how to power your Raspberry Pi while providing it data connection with just 1 wire with Power Over Ethernet (PoE).
LoRa and LoRaWAN for Arduino and Raspberry Pi – Learn how to send data back-and-forth over a long-range at a low cost with LoRa.
TOP 20 Popular Raspberry Pi Displays & Screens – With so many displays available for your Raspberry Pi
How to use: Mini USB Microphone on Raspberry Pi 4 – Want to make your Raspberry Pi be able to record audio? Check out this guide.
Installing ROS Melodic on Raspberry Pi 4 and RPLIDAR A1M8 – Since Debian Buster was released recently, there are no pre-built ROS packages to install with apt-get, which is a preferred method of installation. Through this guide, you will learn how to install ROS Melodic from the source.
10 Most Basic but Interesting Applications of Raspberry Pi – Given the multitude of possibilities with the Pi, you might be unaware of some interesting functions that the Rasberry Pi is capable of. Why not check out this guide on the 10 most basic but interesting applications of Raspberry Pi to find out more!
How to Build a Raspberry Pi NAS Server? – Learn how to build a NAS server to store your files
Udemy Raspberry Pi – Online learning platform with Raspberry Pi learning courses to learn more about electronics and Raspberry Pi
Seeed Project Hub – Find awesome Raspberry Pi Projects with instructions and make them yourself!
Raspberry Pi Forum – Raspberry Pi Official forum for discussing anything related to the Raspberry Pi. Perfect place to go for troubleshooting.