Six years ago, a single-board computer came onto the market and changed the game for hobbyists and do-it-yourselfers. The Raspberry Pi is a dream machine for all sorts of projects – game consoles, home streaming, VPN servers and more – but the first step is collecting your supplies and learning the basics. If you build something with the Pi, start here.
What is the Raspberry Pi?
The Raspberry Pi is a tiny computer the size of a card game. It uses a so-called system on a chip which integrates the CPU and GPU into a single integrated circuit, with RAM, USB ports, and other components soldered to the board for an all-in-one chassis are .
It has no built-in memory, but an SD card slot where you can store your operating system and files. The Raspberry Pi is small, does not consume much power and is relatively cheap at just $ 35.
The original nonprofit Raspberry Pi Foundation designed the Pi as a low-cost computer for programming education, but was used by home improvement enthusiasts in their electronics projects more powerful brain sought, quickly popular.
Since its introduction, many models of the Pi have been released, some with several revisions (such as the Raspberry Pi 3 Model B +, which enhances the networking capabilities of its predecessor Model B.
The latest Pi at the time of this writing is the Raspberry Pi 4 which weighs a 1.5GHz quad-core ARM CPU, a 500MHz VideoCore VI GPU and 1GB of RAM – although you can use up to 4GB of RAM for slightly more money.  Earlier models are still available for $ 35, but often used models are slightly cheaper than the list price, these older models produce less heat, which is a nice feature if your project does not require a lot of power.
What you need to get started
The Raspberry Pi is at the heart of your project, but it's not a single circuit board Without power or storage, it does not go very far.To get your project up and running, you need a few Things:
The Raspberry Pi
The latest model is a little hard to find, as it is in great demand, but you can check this approved list from resellers to see where it might be available , Earlier models such as the Raspberry Pi 3 B + and the Raspberry Pi 2 are also available at Amazon as the Raspberry Pi Zero  which packs a little less power into an even tinier case.
A Power Supply
Earlier versions of the Pi use microUSB for power, but the Raspberry Pi 4 is updated to USB-C (though is an unspecified version ). While certain chargers can power the Pi, I recommend purchasing a power supply developed for the Pi, such as from CanaKit or official models  from the Raspberry Pi Foundation . The USB chargers that you have lying around may not provide enough power for the card. The fewer problems you need to fix, the better.
A microSD card
Most recent Pi models use microSD cards for storing Pi Model A and B with a standard SD card. However, not all SD cards will work properly, so you should buy either the official Raspberry Pi microSD card (supplied with a pre-installed operating system) or a tested compatible card from . This list is similar to the SanDisk 32GB Ultra . You also need a way to plug the SD card into your computer, such as this USB adapter .
Technically, this is optional, but we recommend it. Instead of having your bare board outdoors, it's probably a good idea to protect it with a protective cover. Pi 4 packages are still on the market, but for earlier models, the FLIRC package is a particularly good option due to its built-in heat sink.
Of course there are other cool cases, such as retro gaming Cases and Transparent Cases that shows the hardware inside. Many cases are also supplied with separate heat sinks and / or fans that can help keep the system cool on a chip.
Mouse, Keyboard, and HDMI Cable
Depending on your project, you may not need a mouse and keyboard permanently attached to your Pi, but you probably want to have it on hand at initial setup. If it is too cumbersome to remove the mouse and keyboard from the main computer, take a cheap set from Amazon and do the same for your HDMI cable  (or Micro HDMI cable if you are using the Pi 4.]
You can simplify your life and buy all this accessories together in the official Pi 4 kit or this Pi 3 kit from CanaKit but if you prefer to buy one piece at a time, you may be able to save money if you already have several accessories nearby.
You also need all the other components required for each Project required – for example, if you're building a retro slot machine, you need a few USB gamepads along with everything else.
Installing an Operating System on an SD Card
Each project requires an operating system on the Pi, norm It is Raspbian the foundation's official operating system for the Debian Linux-based Pi. The Pi Foundation also offers an automated installer called NOOBS (New Out of the Box Software). For the purposes of this manual, however, it will be skipped.
Many Projects Need to "Flash" an Image On the SD card itself, it's a good idea to learn how to do that now. I find it easier than NOOBS, although NOOBS is designed for beginners.
Installing an operating system requires two things: an image file and a program that writes it to your SD card. In this tutorial, we use Raspbian as the operating system. You can, however, replace it with any operating system, eg. B. LibreELEC to create a media box RetroPie  for retro games and so on.
To describe the SD card I recommend Etcher as it is available for Windows, macOS and Linux. (Note: If you have already used this particular SD card in a Pi, some partitions may not be visible in Windows.) You can remove these partitions with diskpart before proceeding.)  Download down the image file for your special Pi model. I'm using the full Raspbian image with the recommended software. It will be delivered either in the form of an IMG file or in the form of an IMG in a ZIP file (if you are using Etcher, you do not need to unzip it).
Start Etcher and click the Select Image button and select the file you just downloaded. Select your SD card as the destination and click on Flash. Be especially careful when selecting the destination because the operation deletes the drive you have selected.
This may take some time, but when finished, you can eject the SD card, insert it into your Pi, and plug in the HDMI plug. Plug the cable into a monitor or TV and plug it in Pi in the wall to turn it on. Once you've landed on the Raspbian desktop, you can configure your Wi-Fi, install software from the command line with apt and start crafting!