Arduino
An Italian open-source hardware and software platform best known for accessible microcontroller boards, development tools, and connected-device services.
Last updated August 31, 2026
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Overview
Arduino is an Italian open-source hardware and software company, project, and user community centered on accessible microcontroller development. Its boards combine a microcontroller with exposed digital and analog input/output pins, power connections, and programming interfaces, allowing users to connect sensors, motors, displays, communications modules, and other electronic components. Arduino products are used by beginners, students, artists, makers, engineers, researchers, educators, and professional development teams to build interactive objects and prototypes, including robots, environmental monitors, automation systems, instruments, and connected devices. The project began in 2005 at the Interaction Design Institute Ivrea in northern Italy. Its original goal was to give design students an inexpensive and approachable alternative to costly proprietary microcontroller platforms. The project grew out of the earlier Wiring platform and adopted a lower-cost ATmega8 microcontroller, a simplified programming model, and an integrated development environment influenced by Processing. This combination made embedded programming more approachable to people without conventional electrical-engineering backgrounds. Arduino’s distinctive model combines physical products with open design principles. Hardware reference designs have been distributed under Creative Commons share-alike terms, while software components have been released under GNU General Public License or GNU Lesser General Public License terms. These arrangements allow users and third parties to study, modify, manufacture, and distribute compatible designs, although the Arduino name and trademarks are reserved for approved products. The resulting ecosystem includes official boards, compatible boards, expansion shields, libraries, tutorials, educational material, and community-developed projects. The product family has expanded from early AVR-based boards to models using ARM and other processor architectures. Important lines include the Uno, Nano, Mega, Due, LilyPad, and a range of boards oriented toward wireless connectivity, industrial control, Internet of Things development, and embedded applications. Arduino also maintains software tools including the traditional Arduino IDE, newer command-line tooling, libraries, documentation, and the Arduino Cloud service. These tools support compiling, uploading, monitoring, and managing projects across supported boards. The company’s history includes a significant trademark and governance dispute among the original founders and associated companies. A 2016 merger brought the divided operations together, followed by a 2017 acquisition of Arduino AG and its trademarks by BCMI, a company associated with several original founders. Under Fabio Violante, Arduino resumed product development and broadened its commercial and professional focus while retaining its open-source identity. The Genuino name used during the dispute was later discontinued, returning products to the Arduino brand. Arduino has increasingly positioned itself beyond hobbyist electronics, offering industrial and educational products, cloud connectivity, enterprise-oriented management, and partnerships with major semiconductor and technology companies. In October 2025, Qualcomm was reported to have acquired Arduino for an undisclosed amount. Arduino remains associated with a large global community and is widely regarded as one of the most influential entry points into physical computing and embedded electronics.
History
Arduino emerged from the Interaction Design Institute Ivrea in Italy, where students needed an inexpensive way to create interactive electronic projects. The institute’s earlier Wiring project, developed as Hernando Barragán’s master’s thesis under Massimo Banzi and Casey Reas, established several foundations: a simple circuit board, an IDE influenced by Processing, and libraries that concealed much of the complexity of microcontroller programming. In 2005, Banzi, David Mellis, and David Cuartielles adapted the concept around the cheaper ATmega8 microcontroller and created Arduino. Tom Igoe and Gianluca Martino joined the initial core team. The project was designed for non-engineers as well as technically experienced users, with exposed input/output pins, a bootloader, a simple programming structure, and a development environment that made compiling and uploading code comparatively straightforward. The name was taken from a bar in Ivrea associated with the medieval figure Arduin. Arduino’s open-source approach helped it spread rapidly through education, design, art, hobby electronics, and maker communities. Reference hardware designs were made available under Creative Commons terms, and software was distributed under GPL-family licenses. The openness encouraged compatible boards, third-party shields, libraries, books, tutorials, and classroom projects, while Arduino maintained control over the official trademark and product identity. By the early 2010s, official board production and user adoption had reached substantial scale. The organization later experienced a serious corporate and trademark conflict. Arduino LLC was established in 2008 to hold brand rights and receive royalties from manufacturing partners. A trademark registration in Italy by Gianluca Martino’s company, Smart Projects, was not disclosed to the other founders and eventually became the center of a dispute over international ownership and commercial control. After royalty disagreements, Smart Projects operated under Arduino SRL and launched arduino.org, creating a visible split from the Arduino LLC organization associated with arduino.cc. Arduino LLC sued Arduino SRL in January 2015 and used the Genuino name outside the United States during the dispute. The conflict was publicly resolved in 2016 when the two organizations announced a merger into Arduino AG. The unified company subsequently faced further controversy involving statements about Federico Musto’s educational background and reported changes to open-source materials on the website. In July 2017, BCMI, founded by Banzi, Cuartielles, Mellis, and Igoe, acquired Arduino AG and its trademarks. Fabio Violante replaced Musto as chief executive. The Genuino branding was eventually retired, and official products again used Arduino globally. After the reorganization, Arduino expanded its technical and commercial scope. It released new boards, announced an Arm partnership in 2017, introduced the arduino-cli tool in 2018, and launched Arduino IoT Cloud in 2019. The company continued to support the traditional maker and education audience while developing offerings for professional engineering, industrial monitoring, embedded systems, and connected products. Arduino reported a community of approximately 30 million active users based on IDE downloads as of February 2020, although this figure represents the company’s stated estimate rather than an independently verified user count. In October 2025, Arduino was reported to have been acquired by Qualcomm. The reported transaction value was not disclosed in the cited reference. The acquisition places Arduino within the orbit of a major semiconductor company while leaving its open-source hardware and software heritage as a central part of its identity.
- 2025
Qualcomm acquisition reported
[1]Qualcomm was reported to have acquired Arduino; the transaction value was not disclosed in the cited reference.
- 2019
Arduino IoT Cloud announced
[1]The company extended its online development environment with a cloud service for Internet of Things projects.
- 2018
arduino-cli released
[1]Arduino introduced a Go-based command-line development tool for board programming and project workflows.
- 2017
BCMI acquires Arduino AG
[1]BCMI acquired Arduino AG and the Arduino trademarks, with Fabio Violante becoming CEO.
- 2016
Companies announce merger
[1]Arduino LLC and Arduino SRL announced a merger that formed Arduino AG and reunited the divided operations.
- 2015
Trademark litigation begins
[1]Arduino LLC filed suit against Arduino SRL amid a dispute over brand ownership, royalties, and corporate control.
- 2012
Arduino Due introduced
[1]Arduino expanded beyond its principal 8-bit AVR boards with the 32-bit ARM-based Arduino Due.
- 2008
Arduino LLC established
[1]The five original founders created Arduino LLC to hold trademarks and organize the commercial licensing of Arduino products.
- 2005
Arduino project begins
[1]The founding team adapted Wiring around the ATmega8 microcontroller and began distributing an inexpensive platform for interactive electronics.
- 2004
Wiring platform developed
[1]Hernando Barragán developed the Wiring platform at the Interaction Design Institute Ivrea, establishing the immediate technical and conceptual predecessor to Arduino.
Products and positioning
An approachable, open-source platform connecting physical computing, embedded development, education, prototyping, and increasingly professional and industrial IoT applications.
Microcontroller board
Arduino Uno
The Uno is Arduino’s best-known general-purpose development board. It exposes digital and analog I/O, supports USB programming, and provides a straightforward platform for learning embedded programming, prototyping circuits, and connecting shields and breadboards.
Compact microcontroller board
Arduino Nano
The Nano is a compact Arduino board intended for breadboard use and installations where the larger Uno form factor is inconvenient. Its small size makes it useful for embedded prototypes, classroom projects, and compact devices.
High-I/O microcontroller board
Arduino Mega
The Mega family provides substantially more input/output capacity than entry-level boards, making it suitable for projects requiring numerous sensors, actuators, displays, or serial interfaces, including robotics and complex prototypes.
32-bit development board · 2012
Arduino Due
The Due broadened the platform with a 32-bit ARM-based microcontroller. It was designed for users needing greater processing capability and expanded functionality than the classic 8-bit AVR range.
Wearable electronics board
Arduino LilyPad
LilyPad boards use a form factor suited to wearable and textile electronics. Their layout and connection points are designed for integration into fabric-based projects and interactive garments.
Expansion hardware
Arduino Shields
Shields are add-on boards that stack with compatible Arduino boards to provide functions such as motor control, displays, Ethernet, GPS or GNSS, networking, and specialized connectors. They are produced by Arduino and by third-party developers.
Development software
Arduino IDE
The Arduino IDE is a cross-platform environment for writing, compiling, and uploading sketches to supported boards. It uses a simplified C/C++ programming model, Arduino libraries, and a workflow designed to reduce the barriers to embedded development.
Cloud software · 2019
Arduino IoT Cloud
Arduino IoT Cloud extends Arduino development into connected-device workflows, allowing users to develop and manage Internet of Things projects through online services and compatible hardware.
Controversies
2017
Controversy involving Federico Musto’s credentials and open-source materials
Wired reported that academic degrees attributed to Federico Musto were not confirmed by the named universities and that Musto acknowledged he had not earned them. Later reports about removing open-source materials from the Arduino website generated additional community criticism.
2015
Arduino trademark and corporate dispute
A dispute between Arduino LLC and Arduino SRL concerned trademark registrations, royalty payments, website branding, and control of the Arduino organization. Arduino LLC filed litigation in January 2015; the organizations later announced a merger in 2016.
Brand decisions
2025
Qualcomm acquisitionM&ABackground
Arduino had developed a large open-source hardware and software ecosystem spanning education, makers, and professional embedded development.
Action taken
Qualcomm was reported to have acquired Arduino for an undisclosed amount.
Aftermath
The longer-term effects on Arduino’s ownership, product strategy, and open-source governance were not established in the cited material.
2019
Launch Arduino IoT CloudProduct launchBackground
Connected-device users needed online tools for managing data, devices, and IoT prototypes.
Action taken
Arduino announced Arduino IoT Cloud as an extension of its Create online environment.
Aftermath
The launch expanded Arduino’s offering from local board programming toward cloud-connected development.
2018
Launch arduino-cliProduct launchBackground
Users increasingly required scriptable and automated development workflows in addition to the graphical IDE.
Action taken
Arduino released a command-line tool for compiling and uploading programs to boards.
Aftermath
The tool broadened Arduino’s usefulness in professional, automated, and terminal-based development environments.
2017
BCMI acquires Arduino AGM&ABackground
The unified Arduino AG remained affected by the earlier dispute and leadership controversy.
Action taken
BCMI acquired Arduino AG and its Arduino trademarks, and Fabio Violante replaced Federico Musto as CEO.
Aftermath
Arduino continued product development under the consolidated Arduino brand and retired the temporary Genuino identity.
2017
Partner with Arm while retaining architectural opennessStrategyBackground
Arduino sought to expand its technology relationships without becoming locked to one processor architecture.
Action taken
The company announced a partnership with Arm and stated that it would continue working with multiple technology vendors and architectures.
Aftermath
The partnership supported Arduino’s broader move toward more capable embedded and connected-device platforms.
2016
Merge Arduino LLC and Arduino SRLM&ABackground
The split between the two Arduino organizations had created conflicting corporate and trademark structures.
Action taken
The organizations announced a merger forming Arduino AG.
Aftermath
The merger reunited the brand’s operations but was followed by further leadership and governance controversy before BCMI acquired Arduino AG in 2017.
2015
Use Genuino outside the United StatesOtherBackground
During the trademark conflict, Arduino LLC faced competing control of the Arduino name in some markets.
Action taken
Arduino LLC introduced Genuino as a product name outside the United States.
Aftermath
Following the corporate reunification, the Genuino designation was discontinued and products returned to the Arduino name.
Recent events
Mouser and Arduino launch new ebook on AI embedded design with Arduino UNO Q[3]
Reported:
Mouser announced a collaboration with Arduino to release a new ebook, "From Blink to Think: How Arduino UNO Q Helps Designers Go from Idea to Intelligent Product," exploring how developers can use the UNO Q platform for AI inference, computer vision, and edge computing in embedded design.
- Unconfirmed
Raspberry Pi Foundation partners with accessory makers[4]
Reported:
The Raspberry Pi Foundation partnered with Adafruit, Arduino, Pimoroni, and Sparkfun to develop accessories around its RP2040 chip.
Thales unveils IoT SAFE security solution[5]
Reported:
Thales unveiled its IoT SAFE application, developed with Telstra, Microsoft and Arduino, to provide security for IoT devices and connect them to cloud services.
Arduino announces an IoT hardware design solution[6]
Reported:
Arduino announced a low-code IoT hardware design solution intended to help product creators build new IoT hardware.
Arduino launches IoT development platform and Portenta H7 hardware[7]
Reported:
Arduino announced the launch of a low-code platform and modular hardware system for IoT development, including the Portenta H7 module. The module was available to beta testers, with general availability slated for February 2020.
Sources8 sources
- 1Arduinoen.wikipedia.org
- 2Arduino official websitearduino.cc
- 3贸泽与Arduino合作推出全新电子书，探讨利用Arduino UNO Q进行AI嵌入式设计finance.sina.com.cn
- 4Raspberry Pi Foundation与配件厂商合作hothardware.com
- 5泰雷兹发布 IoT SAFE 安全解决方案mobileidworld.com
- 6Arduino宣布物联网硬件设计解决方案tech.sina.com.cn
- 7Arduino推出物联网开发平台及Portenta H7硬件techcrunch.com
- 8Arduino unveils new modular platform for IoT development at CES - TechCentral.ietechcentral.ie
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