Tutorials

Electronics tutorials including microcontroller, microprocessor, programing and circuits. Intended for beginners, electronics hobbyists, college students, professionals and educational purposes.

MATLAB Logo

Introduction to 2D Plotting in MATLAB

MATLAB not only helps us for calculation but also helps us in data analysis and visualization by plotting graphs and waveforms. It provides us with a 'big picture' of our data. Here I'm going to discuss about the 2D plotting in MATLAB. If you haven't yet started with MATLAB please goto our Matlab Tutorials. Plotting Using fplot() fplot() : It is used to plot between the specified limits. The function must be of the form y=f(x), where x is a vector whose specifies the limits, and y is...

May 17, 2013By MATLAB, Tutorials, 0 CommentsRead more...
Push Button Switch

Using Push Button Switch with Atmega32 and Atmel Studio

Push Button Switch This tutorial is meant for beginners in the field of Atmel AVR programming. I hope that you already read my first tutorial Blinking LED using Atmega32 and Atmel Studio. In most of the embedded electronic projects you may want to use a push button switch to give user inputs to the microcontroller. To use a push button switch with a microcontroller, first you should configure the corresponding pin as input. Then we can easily read the status of...

May 13, 2013By ATMEL AVR, Tutorials, , , , , , 36 CommentsRead more...
dc motor

Interfacing DC Motor with 8051 using L293D – AT89C51

In some of the electronics projects you may want to control a DC Motor with 8051 microcontroller. The maximum current that can be sourced or sunk from a 8051 microcontroller is 15 mA at 5v. But a DC Motor need currents very much more than that and it need voltages 6v, 12v, 24v etc, depending upon the type of motor used. Another problem is that the back emf produced by the motor may affect the proper functioning of the microcontroller. Due to these reasons we...

May 13, 2013By 8051 Microcontroller, Tutorials, , , , , , 36 CommentsRead more...
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Introduction to Vectors and Matrices in Matlab

As you know Matlab is the short form of Matrix Laboratory. As its name indicates, Matlab makes matrix and vector operations very easy. I am writing this tutorial on the assumption that you are familiar with Matlab, if not please goto the first tutorial. Creating Row Matrix or Row Vector Let's start with a simple example for creating a row vector or row matrix with elements 1, 2, 3, 4, 5 and is assigned to a variable name A. >> A = [1...

May 12, 2013By MATLAB, Tutorials0 CommentsRead more...
PWM using Arduino

Pulse Width Modulation : PWM using Arduino

PWM using Arduino Pulse Width Modulation or PWM is a method of Digital to Analog Conversion. It helps in delivering analog average voltage using digital pulses of variable pulse width. By controlling the on time and off time, we can generate an analog average voltage using the digital pulses. PWM has a wide range of application. It is used in DC motor speed control, Brightness control of LED lamps etc. Here in this simple experiment to understand the PWM working in ARDUINO, we...

May 10, 2013By Arduino, Tutorials, , , , , 1 CommentRead more...
16x2 Character LCD

Interfacing LCD with 8051 using Keil C – AT89C51

Liquid Crystal Display (LCD) is very commonly used electronic display module and having a wide range of applications such as calculators, laptops, mobile phones etc. 16x2 character lcd display is very basic module which is commonly used in electronics devices and projects. It can display 2 lines of 16 characters. Each character is displayed using 5x7 or 5x10 pixel matrix. 16x2 Character LCD Interfacing 16x2 LCD with 8051 using Keil C is bit complex because there is no powerful libraries in Keil...

May 10, 2013By 8051 Microcontroller, Tutorials, , , , , 131 CommentsRead more...
relay

Interfacing Relay with 8051 using Keil C – AT89C51

In some electronic applications we need to switch or control high voltages or high currents. In these cases we may use electromagnetic or solid state relays. For example, it can be used to control home appliances using low power electronic circuits. relay An electromagnetic relay is a switch which is used to switch High Voltage or Current using Low power circuits. It magnetically isolates low power circuits from high power circuits. It is activated by energizing a electromagnet, coil wounded on a soft iron core. For detailed...

May 10, 2013By 8051 Microcontroller, Tutorials, , , 14 CommentsRead more...

Blinking LED using Atmega32 Microcontroller and Atmel Studio

Similar to printing 'Hello World' in C or C++, the very first step towards programming a microcontroller is Blinking a LED with a delay. Atmega32 is a very popular high performance 8 bit AVR Microcontroller. For this example project we need to use two registers DDR and PORT. DDR stands for Data Direction Register, it determines the direction (Input/Output) of each pins on the microcontroller. HIGH at DDR register makes corresponding pin Output while LOW at DDR register makes corresponding...

May 8, 2013By ATMEL AVR, Tutorials, , , , , 18 CommentsRead more...
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