what is arduino used for

Arduino is an open-source electronics platform that consists of both hardware and software. It is a programmable circuit board called a microcontroller, which can be used by tinkerers, hobbyists, and makers to design and build devices that interact with the real world. Arduino boards are able to read inputs such as light on a sensor, a finger on a button, or a Twitter message, and execute commands and make decisions based on various input. The Arduino platform has become quite popular with people just starting out with electronics, and for good reason. Unlike most previous programmable circuit boards, the Arduino does not need a separate piece of hardware (called a programmer) in order to load new code onto the board -- you can simply use a USB cable. Additionally, the Arduino IDE uses a simplified version of C++, making it easier to learn to program. Arduino is used for a wide range of projects and applications, including building low-cost scientific instruments, proving chemistry and physics principles, getting started with programming and robotics, building interactive prototypes, experimenting with new musical instruments, and creating interactive objects or environments. It can be used to design devices like print farms, 3D printers, CNC machines, laser etchers, and more. Arduino provides a standard form factor that breaks out the functions of the micro-controller into a more accessible package, making it a great choice for beginners.