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A LITTLE DIRECTION

Project guides.

Practical notes to help you choose, plan and understand your project.

Illustration of a transformer with primary and secondary windings labeled N1 and N2, showing the voltage, current and impedance transformation ratios.B.E./B.Tech Electrical students studying machines, or building projects with transformers (power supplies, isolation, instrument transformers)

Transformer Basics: Turns Ratio Explained

V1/V2 = N1/N2 is just the start. This guide covers the current and impedance-square laws, why real transformers read high on no load, inrush current sizing, tap changers, Dyn11 connections, CT safety, and four worked examples from power-supply selection to impedance reflection.

Read guide Illustration of tolerance stack-up: a dimension chain across stacked housing parts showing worst-case vs statistical (RSS) variation bands and a clearance requirement.B.E./B.Tech Mechanical students dimensioning assemblies — anyone who has toleranced every part and still had the assembly not fit

Tolerance Stack-Up Explained

Every part in tolerance, yet the assembly doesn't fit — that's stack-up. This guide covers worst-case vs RSS analysis, tracing the tolerance loop, two worked examples, process capability tables, Monte Carlo, and design fixes (slots, fewer parts, shifted nominals).

Read guide Illustration of JavaScript testing with Jest showing test cases running with green passing checkmarks beside code.B.E./B.Tech Computer Science and IT students writing JavaScript who test by refreshing the browser and want to learn proper automated unit testing

Testing JavaScript with Jest

Refreshing the browser is not testing. This guide teaches Jest from zero — first tests and matchers, organizing with describe blocks, mocking external services, testing async code — plus what deserves tests and the bug-regression habit that pays off forever.

Read guide Illustration of the ThingsBoard platform: multiple IoT devices feeding telemetry into a central dashboard with time-series charts, gauges, maps and alarm indicators.B.E./B.Tech Electronics, E&TC, IoT and Computer Science students who need a professional multi-device IoT dashboard with history, alerts and user management

ThingsBoard Dashboard Setup Guide

Build a professional multi-device IoT system with ThingsBoard: device onboarding over MQTT, dashboards with charts and maps, rule chains for alarms and validation, deployment options, and an honest comparison with Node-RED and custom web apps.

Read guide Illustration of a web login form with a shield between the user input and a database, showing malicious input being blocked and turned into harmless data.B.E./B.Tech Computer Science, IT and Web Development students building database-backed web applications for academic projects

SQL Injection: How It Works and How to Prevent It

Understand SQL injection the defender's way: why gluing user input into database commands lets attackers smuggle in instructions, what the attack enables conceptually, and the prevention stack — parameterized queries, validation, least-privilege accounts, and safe error handling. No exploit code, just defense.

Read guide Illustration comparing solar inverter types: a string inverter with panel strings, microinverters under each panel, and a hybrid inverter with battery storage.B.E./B.Tech Electrical students designing solar projects — anyone choosing an inverter for a rooftop or off-grid final-year project

Solar Inverter Types Compared

Grid-tie, off-grid or hybrid? String, micro or optimizers? This guide compares every solar inverter architecture, works through DC/AC ratio sizing, the cold-morning Voc safety check, battery sizing for hybrids, efficiency definitions, and the selection mistakes that kill projects.

Read guide Illustration of a SolidWorks-style 3D CAD workspace showing a fully-defined sketch, an extruded bracket model with a feature tree, and a dimensioned engineering drawing.B.E./B.Tech Mechanical students opening SolidWorks for the first time for a design or final-year project

SolidWorks Basics for Students

SolidWorks punishes 2D drawing habits. This guide teaches the workflow that works: fully-defined sketches, model-like-you-manufacture feature order, Hole Wizard, stable assembly mates, workshop-ready drawings with datum dimensioning, and Pack-and-Go hygiene.

Read guide Illustration of SLAM showing a robot building a floor map while tracking its own position with lidar scan rays.B.E./B.Tech Computer Science, Electronics, and Mechanical students building autonomous robots who have heard SLAM is required but find the explanations impenetrable

SLAM Explained Simply

SLAM lets a robot map an unknown space while tracking its own position inside that map — the foundation of robot autonomy. This guide explains the chicken-and-egg problem, the sensors, loop closure, the main algorithm flavors, and the practical tips that make student SLAM demos actually work.

Read guide Illustration of sheet metal air bending on a press brake V-die, showing inside radius, K-factor neutral axis, bend allowance and minimum flange length.B.E./B.Tech Mechanical students designing sheet-metal enclosures, brackets and chassis for projects

Sheet Metal Bending Basics

Your flat pattern is wrong because bending stretches metal. This guide explains the neutral axis, K-factor selection, bend allowance with a worked U-bracket calculation, air bending vs bottoming, minimum flange length, grain direction, and realistic tolerances.

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