WHAT IS ARDUINO?

Arduino is a board with the microcontroller and some pins for connecting other devices. The most popular model is Arduino Uno. It has an Atmel Mega328P microcontroller. To programm this microcontroller usually use C++.

Microcontroller can give digital and PWM signals, get analog and digital signals, and talk with other devices, for example, screens, send them special signals with SPI, I2C, UART and other interfaces.

For comfortable building projects with Arduino, there are special kits with Arduino Uno, Nano or Mega and a lot of parts, for example, buttons, resistors, LEDs, photoresistors, potentiometers, IR control, temperature sensors, water sensors, screens and other.