
BLOG · 30/3/2026
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Soldering is a process used to join two or more metal parts together by melting a filler metal called solder. The solder cools and solidifies, creating both a mechanical and electrical connection.
Learn about the various parts of the soldering meachine Learn about solering filaments (solder) and wax Learn how to soleder
The working pinciple o the soldering machine , i.e the process of heating the tip of the metal Curie's temperature How to clean the tip The tip is the part which gets the most heated so its important to handle it properly How to solder elcectronic boards and circuits The dont's was better learrnt than the do's wax is used so that thers no like dust particles or other contaminations on the soldering tip which might interfere in soldering How to clean the tip using the sandpaper How to de-solder although I didn't use the actual de-soldering machine I learnt how to use it and when to use it How to control the voltage which regulates the amount of heat needed to be used

To control the speed of an h-bridge L298N motor driver using an L298N motor module and arduino uno
I learnt how an L298N motor driver functions and what are it's various sockets and connections and that we can hook it upto 2 motors simultaneously
The basic working principle of the H-bridge L298N motor driver and how it changes the speed based on the periodically altering volatge supply provided to it by the L298N motor driver
The H-bridge L298N motor driver has 4 electrodes which control direction and speed based on the applied voltage it has its own specific truth tables for this process to happen and the fluctuating volatage is supplied by the L298N motor module in the high voltage mode one series of network will be connected and the motor will rotate in one direction and speed , when a lower voltage is applied the switch changes and a new network will be initiated which rotates the motor in different direction and different speed
It has the 4 electrodes arranged in the forma of an H with a switch in middle and sides which governs the speed and direction the H-bridge L298N motor
The aurdiono board takes care of the execution of the code instructing the L298N motor module which specifies the module to supply the right amount of voltage at set intervals controlling the execution of the desired output
Virtual Reality is is one of the most fascinating concept of technology and human experience. At its core, VR uses computer-generated environments to immerse people in a simulated world that feels natural and real. Instead of just looking at a screen,we step inside the digital space with the help of headsets, motion controllers. like the film Ready Play One
To be able to differentiate between AR and VR Experienc an VR system Mention about the trends in the space and technology Make about Indian companies in this space
VR : It stands for virtual reality it's like a secondary earth a set of programs and codes which when run let's the user experience this artifically created world in it's entirety as if the user has beem re-incarnated in this artificially created world The motion sensors and the moment readers in thwe hardware converts each moves into electronic signals and passes it to the program there is very less time lag in the transfring of the information to the program We the users are the supreme controllers in this artificually creatwd world and can alter it the way we want changing landscapes and many other natural terrain as per our needs and desires This is the most simple definiton of VR
AR : All the people around the world utilize AR we commonly use it in our daily life without knowing about it The most basic and simple exam is our Smart Phones our Tablets and our laptops It utilizes pictures , audio and Graphics to bring the experienc of the real world to us in a 2d format It's completely different from VR as there no rendering and everything like VR youre just being shown interactive videos with matching audios to experience it thats it Its's application can be seen in games like Pokemon GO GOOGLE LENS Snap Chat Filters
How is VR being used in Space and Technology : VR is being used in space technology and research mainly for -
Astronaut Training: Helping the astronaut by simulating the conditions and lifestyle in space , how to stay in zero gravity , how to be on the spaceships If the mission involves landing on foreign planets stimulating the conditons of that planets it's gravity and it's harsh condutions so that the astronauts can be prepared to face it
Spacecraft Design: to design the space craft in such a manner that it can handle the harsh conditons of re-entry or launch making the space craft fail proof and simulating the various conditions which might occur during its flight to test it , how well it handles the flight and certain un-forseen factors and to test various designs and materials of components to check if they can withstand the mission
Medical support during long-duration missions: in space with their fates constantly being tested certain astronauts may exprience fatigue and other symptoms which may lead to bad health or if there's any problem with their health any minor problems and they hurt themselves on the space shuttle thousands of km away from home VR is used to help perform operations on the injured or give them mental support helping them to complete their missions , rendering various simulations on how the operation might happen and deciding the best course of action all this is accompished using VR.
INDIAN Companies Leading in this field:

The ESP32 is a low-cost, Wi-Fi-enabled microcontroller ideal for IoT projects. It’s powerful enough to handle web server tasks while remaining energy-efficient
Understanding the working of ESP32
Create a standalone web server with an ESP32 that controls the LED connected with ESP32 GPIOs
ESP32 is an IC (micro controller) used to control the instruments via wifi or bluetooth
How connections are made in it and how it accssses using ip adress
LED bulbs which we used has +ve and -ve terminals
Design a 555 astable multivibrator with duty cycle 60%
Prepare a circuit on a breadboard
Check the output using an oscilaotr scrren
An 555 IC can be used to create a free running astable oscillator to continuously produce square wave pulses
The circuit keeps switching between HIGH and LOW automatically during high voltage the capacitors get charged and output is seen
During low voltage the capacitor discharges and the gaps is seen