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A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

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a light source often used as an indicator.
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for questions about touchscreen compatibility, and how to use compatible touchscreens with the Raspberry Pi.
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For questions pertaining to the Arduino microcontroller and it's integration with Raspberry Pi projects. Questions about Arduino only are off-topic and can be asked at Arduino Stack Exchange.
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about remote control. It can cover SSH, security, and other topics related to the non-local control of the pi.
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a package manager used on Raspbian and includes commands such as 'apt-get'.
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The SPI bus, Serial Peripheral Interface, is a synchronous serial communication interface for short distance communication, e.g. between components in an embedded system such as the Pi. Devices commun…
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an operating system for the Internet of Things. It has no desktop, but allows you to run a single Universal Windows Platform App in fullscreen. Out of the Raspberry Pi series, o…
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Open Source Computer Vision Library, real time computer vision
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These questions relate to using the Pi as a web server, including installation and configuration.
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a cross-platform, open source media player available for the pi. Versions < 14.0 were called XBMC.
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a desktop sharing system that uses the RFB protocol to remotely view and control another desktop.
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Questions involving the New Out Of Box Software (NOOBS). Use this tag if you are having trouble using NOOBS to boot your Pi, having trouble with using NOOBS to install an OS, or your question involves…
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a Linux operating system derived from the Debian distribution.
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Streaming video often means watching video whilst downloading it from the web (e.g. YouTube); for the RPi it also refers to the process of capturing video data from attached "Raspicams" or USB attache…
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an integral part of the Raspberry Pi setup. A screen is usually connected via the HDMI or Composite RCA ports, though it may be connected via the use of SSH. Do not use this tag for the …
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Relates to powering USB devices from the Raspberry Pi
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an operating system that is based on GNU/Linux. It was previously recommended by the Raspberry Pi Foundation as the standard distribution, but Raspbian is now being recommended.
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a minimal Linux distribution based on Debian that brings XBMC to your Raspberry Pi. It is now succeeded by OSMC. Questions here should be related to the distribution, whether it be setup or…
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Questions related to connection hard disks to the Raspberry Pi. For primary storage media, see sd-card.
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A keyboard allows a user to send characters to the Raspberry Pi, a common input device.
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when referring to the Python 3 language. This can include discussions about specific features unique to the language or perhaps when referring to software that requires Python 3 in order…
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A connection describes a link between two systems where data can be exchanged.
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the global system of interconnected computer networks. It uses the Internet protocol suite (TCP/IP) to link billions of devices worldwide.
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The use of the Pi as a computer or computer program that manages access to a centralized resource or service in a network. This topic can cover software, hardware, feasibility, and security.
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Questions about software drivers for external peripherals as well as drivers for the system components. This is NOT for questions about "driver boards", e.g., for motors; use 'dc-motor' instead.
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a Universal Asynchronous Receiver/Transmitter, better known as serial port
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A retro game console for the Raspberry Pi.
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a lightweight and flexible Linux® distribution that tries to Keep It Simple.
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Referring to the Microsoft OS developed (primarily) as a traditional desktop experience. For the version of Windows that runs on the Raspberry Pi, please use the tag windows-iot.
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a technique used for controlling the power given to electrical devices. The average power supplied is controlled by rapidly turning the supply on and off. Questions her…
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Referring to the connecting of storage to/from a Raspberry Pi.
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the Dynamic Host Configuration Protocol (DHCP) is a network protocol that automatically configures clients (or hosts) on the network, such as IP addresses and networking parameters. Questiosn include …
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a file containing the complete data of another medium, e.g. the content of a SD card.
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one that runs without a monitor (the head).
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For questions pertaining to compiling c++ programs on the Raspberry Pi.
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For questions pertaining to Android, the Linux-based touch-enabled operating system designed for mobile devices.