the manufacturer. #define LED_PIN 13 // Pin number attached to LED. void setup() { pinMode(LED_PIN, OUTPUT); // Configure pin 13 to be a digital output. } void loop() { digitalWrite(LED_PIN, HIGH); // Turn on the LED. delay(1000); // Wait 1 second (1000 milliseconds). digitalWrite(LED_PIN, LOW); // Turn off the LED. delay(1000); // Wait 1 second. } Libraries The open-source nature of the Arduino project has facilitated the publication of many free software libraries that other developers use to augment their projects. Operating systems/threading There is a Xinu OS port for the atmega328p (Arduino Uno and others with the same chip), which includes most of the basic features. The source code of this version is freely available. There is also a threading tool, named Protothreads. Protothreads are described as "extremely lightweight stackless threads designed for severely memory constrained systems, such as small embedded systems or wireless sensor network nodes. Applications Arduboy, a handheld game console based on Arduino Arduinome, a MIDI controller device that mimics the Monome Ardupilot, drone software and hardware ArduSat, a cubesat based on Arduino C-STEM Studio, a platform for hands-on integrated learning of computing, science, technology, engineering, and mathematics (C-STEM) with robotics Data loggers for scientific research OBDuino, a trip computer that uses the on-board diagnostics interface found in most modern cars OpenEVSE an open-source electric vehicle charger XOD, a visual programming language for Arduino Simulation Tinkercad, an analog and digital simulator supporting Arduino Simulation Wokwi, a digital and free to use simulator for Arduino boards Recognitions The Arduino project received an honorary mention in the Digital Communities category at the 2006 Prix Ars Electronica. The Arduino Engineering Kit won the Bett Award for "Higher Education or Further Education Digital Services" in 2020. See also List of Arduino boards and compatible systems List of open-source hardware projects Explanatory notes References Further reading External links How Arduino is open sourcing imagination, a TED talk by creator Massimo Banzi Evolution tree for Arduino Arduino Cheat Sheet Arduino Dimensions and Hole Patterns Arduino Shield Template Arduino Board Pinout Diagrams: Due, Esplora, Leonardo, Mega, Micro, Mini, Pro Micro, Pro Mini, Uno, Yun Historical Arduino - The Documentary (2010): IMDb, Vimeo Massimo Banzi interviews: Triangulation 110, FLOSS 61 Untold History of Arduino - Hernando Barragán Lawsuit documents from Arduino LLC vs. Arduino S.R.L. et al. - United States Courts Archive Microcontrollers Open hardware electronic devices Robotics hardware Computer-related introductions in 2005 Physical