It is always a good idea to keep an eye on the temperature of your Raspberry Pi’s CPU. Although this small processor packs a punch for its size, it is important to remember that it does not have a fan or any other cooling ability by default. That means that if the processor is constantly working hard, CPU temperatures could get high and eventually damage the device.
Most Linux systems tend to use a little bit of storage on the hard drive as swap space, where temporary files can be stored by the system and then easily recalled later. This speeds up operations, without needing to take up any space inside of the physical memory (RAM). On a Raspberry Pi, this same convention can prove problematic due to the majority of devices relying on an SD card as the primary (or only) storage device.
Since the Raspberry Pi is frequently accessed remotely, such as through an SSH or VNC connection, we can’t always take a peek at the device to see which USB devices are physically connected to it. Furthermore, it can be useful to query the USB ports from the system itself, just to see if the devices or connections are actually being detected. In this tutorial, you will see how to check the USB devices that are connected to a Raspberry Pi.
Newer Raspberry Pi models such as the Raspberry Pi 4 come with Bluetooth capabilities built in. To get started using Bluetooth on your Raspberry Pi, you will have to make sure that the service is enabled. This allows the device to utilize the Bluetooth hardware to connect to peripheral devices like mice, keyboards, and headphones. If you are not planning to use Bluetooth, then you may want to keep it disabled in order to minimize unnecessary overhead. In this tutorial, you will see how to enable or disable Bluetooth on the Raspberry Pi model 4.
Although the Raspberry Pi is small, it packs a lot of power into that small space. When doing intensive tasks, the Raspberry Pi can generate too much heat, and it does not come with a fan to help keep the temperature down. For this reason, it is important to keep an eye on your Raspberry Pi’s temperature to make sure it does not get too hot and risk damaging components. Furthermore, the Raspberry Pi will not perform up to par if it needs to throttle itself to keep temperatures down.
In this tutorial, you will see how to change the keyboard layout on your Raspberry Pi. This will allow you to access all of the necessary characters available in the language of your desire, as well as give you an opportunity to switch between a QWERTY or other type of keyboard layout. We will assume that you are using the official Raspberry Pi OS, from which the keyboard layout can be configured via both command line and GUI.
SD and microSD cards are not known for their speed, but their slim size makes them the default choice for storage in the Raspberry Pi. Most users will install the Raspberry Pi OS to a microSD or SD card, and then use additional hard drives if the need for greater read and write speeds arises. In order to use an SD card or microSD card for storage on the Raspberry Pi, it should pass the benchmark test for minimum speeds.
Fdisk, cfdisk and sfdisk are command line partitioning utilities included by default in all Linux distributions. They provide different interfaces to the same set of functions: while they all can be used interactively, only sfdisk is script-oriented. They support DOS, GPT, SGI and SUN partition tables.
All Raspberry Pi models come with either an SD or microSD card slot. Since the Raspberry Pi does not come with any storage built into the device, most users will opt to use the SD slot to run the Raspberry Pi operating system as well as for storing additional files. But, the SD interface can leave a lot to be desired when it comes to speed.
The CPU frequency, also known as the clock speed, is a measure of how many cycles per second your Raspberry Pi’s CPU can execute. It is measured in gigahertz (or GHz). In essence, the faster your CPU’s clock speed, the faster your Raspberry Pi can process requests. This will translate into a more responsive and snappier experience for the user as they do resource intensive tasks.
Once you get your Raspberry Pi booted up and have the monitor plugged in via HDMI, you may need to manually set the resolution to get things looking how they should on your screen. The Raspberry Pi OS makes this pretty easy to do from the GUI menus, and also gives us the option to configure headless resolution for VNC connections. So, even if you do not have a screen plugged into your Raspberry Pi, we can still configure the resolution for remote connections. In this tutorial, you will see how to set the resolution on a Raspberry Pi.
There are a few tools at your disposal for checking the disk space on a Raspberry Pi system. These tools and Linux commands can be used to check a storage device’s capacity (such as that of your micro SD card) and the size of the files on it, or just to check the size of a particular directory or file. We will show you how to get a visual representation of how the total storage space is being used on your Raspberry Pi, as well as a few commands that you can enter into the terminal to quickly find the relevant storage stats on your Raspberry Pi.