A microcontroller is a small computer on a single integrated circuit containing a processor core, memory, and programmable input/output peripherals. Microcontrollers are designed for embedded applications, in contrast to the microprocessors used in personal computers or other general purpose applications.

schema - Controlling 220v using Arduino relay board
20 May, 2014
Get your relay from AliExpress.com:5V 2-Channel Relay Module Shield For Arduino with Free ShippingThis guide shows how to control 220 / 230 V using relay board. This is very general relay board, you...
schema - Pushbutton that lights up LED with Arduino
25 Jan, 2013
How you can light up a LED using pushbutton. While holding the button down the LED lights up.
schema - Simple LED light up with Arduino
25 Jan, 2013
Simple LED light up with Arduino. I have just connected LED lamp to 5 volts. Also I added a resistor that is 1k Ω. This is the first thing I did with my Arduino when I bought it. Basically you don't...
schema - Arduino Light Sensor Circuit Tutorial
10 Dec, 2011
Arduino light sensor circuit tutorial shows how to connect light sensor to Arduino and how to use it in your programs. Light sensor measures light intensity and you can read it with Arduino using an...