Let us now understand basics of Relay and then will move on to the interfacing part of Relay with Arduino Uno. Relay A relay is an electrically operated switch. It consists of a set of input terminals for a single or multiple control signals, and a set of operating contact terminals. The switch may have any number of contacts in multiple contact forms, such as make contacts, break contacts, or combinations thereof. Interfacing Relay with Arduino Interfacing Relay with Arduin

We will start with introduction to LCD then will see interfacing of Arduino Uno with LCD. LCD(Liquid Crystal Display) A liquid crystal display or LCD draws its definition from its name itself. It is a combination of two states of matter, the solid and the liquid. LCD uses a liquid crystal to produce a visible image. Liquid crystal displays are super-thin technology display screens that are generally used in laptop computer screens, TVs, cell phones and portable video games. L

Firstly we will understand what is seven segment and how it works. Then we will learn the interfacing part in more easier way. The seven segments displays are the oldest yet one of the efficient types of display used in embedded applications. This display has nothing more than 8 LED inside it. Each of the seven LEDs is called a segment because when illuminated the segment forms part of a numerical digit (both Decimal and Hex) to be displayed and sometimes an additional 8th L

In last lesson we learned the importance and some features of Arduino Uno. Now we will discuss how we can use this Arduino Uno for different applications. To use the Arduino Uno as per the user commands, it need to be programed using an Arduino IDE software. You can download this software here. This is the link for Arduino official website. You just need to click on downloads then scroll down you will find Window installer option(it's size is around 85MB). After this click on

A development board is basically a printed circuit board with circuitry and hardware on-board to facilitate experimentation with certain microcontrollers. These boards can save you from a lot of repetitive tasks. These development boards can be used in multiple projects, so it is a one-time investment. Typically, components of a development board include: 1. Power circuit (typically, set up to run from a 9V/12V power supply) 2. Programming interface 3. Basic input circuitry,

About Raspberry Pi : Raspberry Pi is a capable little device that enables people of all ages to explore computing and to learn how to program in languages like Scratch and Python. It’s capable of doing everything you’d expect a desktop computer to do, from browsing the internet and playing high-definition video to making spreadsheets, word-processing, and playing games. It is a small single-board computer, by connecting peripherals like a Keyboard, mouse, and display to the R