Liquid Crystal Displays ( LCD ) are widely used as output in small systems especially robots . With there ability to display human readable text they are also a great add on to robots and can output great amount of information or be used as a system from which the user can interact . In this simple tutorial you will learn how to interface LCD's , what are the signal required on various pins and C code for using 16x1 and 16x2 LCD's.
LCD : Liquid crystal display ( because its has a
A small introduction to stepper motors and how to use them and the circuit and logic required to get them up and running .
Stepper Motor?? ehh...
Stepper Motor is widely used in CNC machine drives, robots, and wherever an accurate positioning is required. In such applications, step angle, direction, operating modes( single coil or double coil), speed and position are important considerations.
You might be thinking ..Why stepper? why not servo?
IMAGE ACQUISITION
Image acquisition nowadays can be done in various ways either by connecting a CCD camera or digital stream input from some other source can be used. These input streams can be interfaced either by VFW( Video for windows) Interface in Microsoft OS platforms or VFL (Video For Linux) interface in Unix based platforms. Every visual programming language nowadays provide
suitable library routines to access these services.
IMAGE FILTERING
THEORY OF IMAGE PROCESSING (Special Thanks to Pulkit Gaur)
Modern digital technology has made it possible to manipulate multi-dimensional signals with systems that range from simple digital circuits to advanced parallel computers. The goal of this manipulation can be divided into three categories:
* Image Processing image in -> image out
* Image Analysis image in -> measurements out
* Image Understanding image in -> high-level
In this article we will have a look at Operational Amplifiers ( OP AMPS ) which are heavily used in robotics and interfacing sensors . The article is meant for people with no knowledge of Op-Amps to those who know some things about them . It starts of explaining the basics then moves to type of operations which an op-amp can perform lastly gives a few examples of where these are used in a simple robot ( line follower , fire fighting , sonar based , BEAM ).
What is an Op Amp
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