Tutorials

This section contains easy-to-follow tutorials based on what I learn and use in real projects. From software testing concepts to electronics fundamentals, each tutorial is written to be practical, simple, and beginner-friendly.

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  • How to Use Azure DevOps with Power BI & View Reports

    How to Use Azure DevOps with Power BI & View Reports

    You can connect Azure DevOps to Power BI using either: Below are step-by-step instructions. Method 1: Using Azure DevOps Analytics Views (Most Common & Easiest) If your Azure DevOps organization…

  • Azure DevOps Guide for Testers

    Azure DevOps Guide for Testers

    1. Introduction to Azure DevOps (ADO) Azure DevOps (ADO) is Microsoft’s cloud-based DevOps platform that supports the entire software development lifecycle. It provides tools for: For testers, Azure DevOps is…

  • How to install Docker to Raspberry Pi?

    How to install Docker to Raspberry Pi?

    Installation Step1 Update all our existing packages before we proceed to install Docker. We can upgrade all existing packages by running the following two commands on the Raspberry Pi. sudo…

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All Tutorials

  • How to Locate UI Elements (WebElements) in Selenium

    How to Locate UI Elements (WebElements) in Selenium

    To Locate UI elements in Selenium each of the language bindings expose a “Find Element” and “Find Elements” method. The first returns a WebElement object otherwise it throws an exception. The latter returns a list of WebElements, it can return an empty list if no DOM elements match the query. Following are the list of…

  • Selenium – The AndWait and the waitFor Commands

    Difference between “AndWait” and the “waitFor” Commands The difference between a command and its AndWait alternative is that the regular command (e.g. click) will do the action and continue with the following command as fast as it can, while the AndWait alternative (e.g. clickAndWait) tells Selenium to wait for the page to load after the action has been done. The AndWait alternative is always used…

  • Sanity testing vs Smoke testing

    Sanity testing and Smoke testing. What is the difference? For last 10 years I have answered this question justifying the answer which I read in book. This is also one of my question in interviews. It is such a question which do not have answer. It is a question that should not be answered except perhaps…

  • Basic Electronics – Resistor Combinations

    RESISTOR COMBINATIONS When we do not get specific resistor values we have to either use variable resistors such as potentiometers or presets to obtain such precise values. Pots are too expensive to use forevery case. Another scheme is to combine two or more resistors to obtain the necessary precise values.Such resistor combinations can cost as…

  • LED Basics

    Today LED has become an integral part of consumer electronics. LED TV, LED Display, LED Lights and so on. These are becoming very popular because of there low power consumption. What is LED? LED stands for Light emitting diode. A light emitting diode is essentially a PN junction semiconductor diode that emits a monochromatic(single) colour…

  • Basic Electronics – 2

    Passive Components RESISTORS To oppose the flow of electrons ( current). The symbols are shown below. Resistance is measured in units called “Ohm”. 1000 ohms is shown as 1k ohm (103 ohm) and 1000 k ohm is shown as M.ohms (106ohm). Resistors can be broadly of two types. • Fixed Resistors and Variable Resistors. Fixed…

  • Basic Electronics – 1

    Introduction Electronic component can be divided into 2 types: Active and Passive components Resistors and Capacitors etc. are known as passive components because they can only attenuate the electrical voltage and signals and cannot amplify. Devices like transistors and operational amplifier(op Amps)can amplify or increase the amplitude and energy associated with the signals and so are…