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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 method of communicating with one or more devices over a bus system using only data and ground connections. It is designed for small devices which do not require high data speeds or large amounts of …
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It refers to a seven-segment display (SSD) is a form of electronic display device for displaying decimal numerals.
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A component which measures G-force to detect which direction it is moved or tilted in.
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an open-source hardware company founded by Limor Fried in 2005. Use this tag to mention issues with Adafruit products or tutorials.
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Analog Digital converter
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a sequence of well-defined steps that defines an abstract solution to a problem. Use this tag when your issue is related to algorithm design.
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A standard Arduino function for detecting the voltage on an analog pin via ADC.
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From [Arduino - AnalogReadResolution][2]: > `analogReadResolution()` is an extension of the Analog API for the > Arduino Due and Zero.
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used to generate a PWM (Pulse Width Modulation) output signal on compatible pins.
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For questions about communication or data transfer between Arduino and Android devices. General Android questions can be asked on Android.SE.
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a (now discontinued) lower cost Arduino development board created by Intel during their brief foray into the Maker market.
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an microcontroller card based on the Atmel SAM3X8E ARM Cortex-M3 CPU. This is a 32bit ARM core MCU.
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A microcontroller board based on the ATmega168 or ATmega328.
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A microcontroller board based on the Intel Quark SoC X1000 Application Processor, a 32-bit Intel Pentium-class system on a chip, designed to be hardware and software pin-compatible with shields design…
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for questions about the official IDE. The open-source IDE makes it easy to write code and upload it to any Arduino board. It runs on Windows, Mac OS X, and Linux.
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An Arduino board based on the ATmega32u4 chip with built in USB HID functionality
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A microcontroller board based on the ATmega2560 or 1280 chip. Use this tag for questions specifically regarding the Mega, and not just general Arduino usage.
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A microcontroller board based on the ATmega32u4 with built-in USB communication.
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A small microcontroller board based on the ATmega168 or ATmega328 chip. Use this tag for questions specifically regarding the Mini, and not just general Arduino usage.
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An extension board for Arduino which provides functionality for controlling DC/stepper motors and other inductive loads (such as relays and solenoids).
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a small board based on the ATmega328 or 168. It has male headers, so it can be plugged directly into a breadboard. It is small and compact, and features a USB chip.
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a small microcontroller derived from the Arduino Uno using the ATmega328. It is unique for its tiny size and the required external FTDI adapter.
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the most common of the Arduino boards. It is based on the ATmega328P microcontroller.