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.
Voltage level should be used for questions that are referring to using hardware together that operates on different voltages (the "concentration" of electricity).
an open-source hardware company founded by Limor Fried in 2005. Use this tag to mention issues with Adafruit products or tutorials.
a small microcontroller derived from the Arduino Uno using the ATmega328. It is unique for its tiny size and the required external FTDI adapter.
Refers to the code burned on the Arduino flash memory that runs every time the board is powered up. It starts the execution of user-loaded programs and allows uploading sketches from a PC through the …
the process of updating or changing the sketch on the Arduino board. It does not refer to uploading to a server or a website.
a part that acts like a switch that can be controlled by an Arduino. They usually are powered by sending current through a coil, which moves a piece of metal to touch a contact within it. (…
A sequence of characters -- including letters, numbers and symbols -- often used for representing information in a human-readable format.
The physical circuitry and other components of a machine or device. This is distinct from the program code running on a device, which may be called software or firmware.
a microcontroller board based on the ATmega32u4 and the Atheros AR9331. Use this tag for questions specifically regarding the Yún, and not just general Arduino usage.
An ultra low-power transceiver for radio communication in the 2.4GHz ISM band (Industrial, Scientific, and Medical). Commonly used by tinkerers because of its low cost and its easy to use SPI interfac…
Global Positioning System. Uses satellites to determine geographic location.
to ask about electronics-related issues with your Arduino. For example: driver transistors, Ohm's Law, current-limiting resistors.
An extension board for Arduino which provides functionality for controlling DC/stepper motors and other inductive loads (such as relays and solenoids).
Radio-Frequency Identification. Uses electromagnetic fields to transmit data for identification purposes, such as between a tag and a reader. RFID is the precursor to Near Field Communication (NFC).
a form of light which is not visible to the human eye. It can be used in a variety of applications, including remote controls, data transfer, reflectance sensing, and proximity/motion…
a system which delivers data such as web-pages to a client system.
systematic examination of your Arduino sketch. It is intended to find and fix mistakes overlooked in the initial development phase, improving both the overall quality of software and th…
A component which measures G-force to detect which direction it is moved or tilted in.
Wireless refers to the technology allowing the transfer of information between two points that are not physically connected.
A microcontroller board based on the ATmega32u4 with built-in USB communication.
A visual output device typically capable of displaying text and/or graphics. Can include various technologies, such as LCD, OLED, and TFT.
for questions regarding how to get the time on an Arduino, how to create or use clocks with an Arduino, or anything that has time as a substantial factor in it. Also consider using [progr…
to refer to the volume of electricity traveling through any given wire at any given time. It is measured in amps.
a family of form factor compatible radio modules. Most are based on the 802.15.4-2003 standard.
a Universal Asynchronous Receiver/Transmitter. This refers to the "hardware" serial port in the processor. Use this tag for questions about hardware serial.