Tuesday 15 October 2024

Dr. APJ Abdul Kalam: The Missile Man and People's President


Dr. Avul Pakir Jainulabdeen Abdul Kalam, affectionately known as the “Missile Man of India” and the “People's President,” is one of the most respected and influential figures in India's history. His remarkable contributions as a scientist, teacher, and statesman have left an indelible mark on the nation. Kalam’s life was a testament to perseverance, humility, and a relentless pursuit of knowledge, making him an inspiration for millions, especially the youth of India.


Early Life and Education


Born on October 15, 1931, in the small town of Rameswaram in Tamil Nadu, Kalam grew up in a modest family. His father, Jainulabdeen, was a boat owner and imam of the local mosque, while his mother, Ashiamma, was a homemaker. Despite financial constraints, Kalam's parents were committed to providing him with a good education. From a young age, Kalam displayed a keen interest in learning, often spending hours studying and reading books.


He attended Schwartz Higher Secondary School in Ramanathapuram and later went on to study at St. Joseph's College in Tiruchirappalli, where he graduated in Physics in 1954. However, Kalam’s passion for aerospace and his dream of becoming a pilot drove him to pursue aerospace engineering. He joined the Madras Institute of Technology (MIT) in 1955, where his determination and hard work earned him the respect of his teachers and peers. Although he narrowly missed his dream of becoming a fighter pilot, his career in aerospace and defense would soon propel him into national prominence.


Contributions to India’s Missile and Space Programs


After graduating from MIT, Dr. Kalam began his career at the **Aeronautical Development Establishment** of the **Defence Research and Development Organisation (DRDO)**. However, it was his work with the **Indian Space Research Organisation (ISRO)** that would cement his legacy. In 1969, Kalam became the project director of India’s first satellite launch vehicle (SLV), which successfully deployed the **Rohini satellite** in near-earth orbit in 1980. This was a monumental achievement for India, marking the country’s entry into the space race.


Kalam’s success at ISRO led to his involvement in some of India's most significant defense and missile projects. His leadership of the **Integrated Guided Missile Development Programme (IGMDP)** in the 1980s was critical in advancing India’s missile capabilities. Under his guidance, India developed a series of successful missiles, including:


1. **Prithvi** (surface-to-surface missile),

2. **Agni** (intercontinental ballistic missile),

3. **Akash** (surface-to-air missile),

4. **Trishul** (tactical missile),

5. **Nag** (anti-tank missile).


His contributions earned him the nickname **"Missile Man of India."** These projects played a crucial role in enhancing India's defense capabilities and establishing its self-reliance in missile technology.


In 1998, Dr. Kalam was also a key figure in the successful testing of **India’s nuclear weapons** under the code name **Pokhran-II**. His involvement in the nuclear tests, alongside the then Prime Minister Atal Bihari Vajpayee, elevated India’s status as a nuclear power and placed him at the forefront of national defense achievements.


Visionary Leader and the People's President


Dr. Kalam’s contributions extended far beyond science and technology. His deep connection with the people and his vision for a prosperous and self-reliant India made him one of the most beloved leaders in the country. This culminated in his election as the **11th President of India** in 2002. His presidency was characterized by his humility, simplicity, and an unwavering dedication to the service of the nation. Despite holding the highest office in the country, Dr. Kalam always saw himself as a teacher first and an advocate for the empowerment of the youth.


As President, Kalam often interacted with students, encouraging them to dream big and contribute to the nation's growth. His accessibility and willingness to engage with ordinary citizens earned him the affectionate title of the **“People's President.”** Kalam envisioned a developed India and actively promoted his blueprint for the country’s future in his book **“India 2020: A Vision for the New Millennium.”** This vision emphasized technological advancements, economic growth, and improved education to transform India into a superpower.


Throughout his presidency, Kalam remained apolitical, focusing on uniting the country and promoting a sense of national pride. His integrity, wisdom, and vision for India made him one of the most respected figures in the nation’s history.

 

A Lifelong Educator and Mentor


After completing his tenure as President in 2007, Dr. Kalam returned to what he loved most: teaching. He served as a visiting professor at several prestigious institutions, including the Indian Institute of Management (IIM) Ahmedabad, IIM Shillong, and IIM Indore. He also became a visiting faculty member at the Indian Institute of Science (IISc) and Anna University, Chennai. Kalam’s passion for education and his desire to inspire young minds continued until his last moments.


His speeches and writings often focused on the importance of education, creativity, and innovation. He believed that India’s future rested in the hands of its youth and that empowering them with knowledge and values would be the key to national progress. His famous quote, “Dream is not that which you see while sleeping, it is something that does not let you sleep,” continues to inspire millions across the world to pursue their dreams with relentless passion.


 Books and Writings


Dr. Kalam was not just a scientist and statesman; he was also a prolific writer and thinker. His books, written in a simple and accessible style, reflected his philosophy of life and his vision for India. Some of his most notable works include:


1. **“Wings of Fire”** – His autobiography, chronicling his early life, education, and his journey in science and leadership.

2. **“Ignited Minds”** – A motivational book that calls for the youth of India to ignite their minds with creativity and innovation.

3. **“India 2020”** – A comprehensive vision for transforming India into a developed nation by 2020.

4. **“The Luminous Sparks”** – A collection of poems written by Dr. Kalam, reflecting his thoughts on life, love, and the universe.


Through his books, Dr. Kalam sought to inspire generations to think beyond conventional boundaries and work towards a brighter and more prosperous India.


Death and Legacy


Dr. APJ Abdul Kalam passed away on July 27, 2015, while delivering a lecture at the Indian Institute of Management, Shillong. He collapsed while speaking to the students, an event that seemed fitting for a man who dedicated his life to teaching and inspiring young minds. His death was met with an outpouring of grief across the nation, and he was given a state funeral in his hometown of Rameswaram, where thousands of people gathered to pay their respects.


Kalam’s legacy, however, lives on. He is remembered not only for his scientific achievements and leadership but for his humility, his love for the country, and his belief in the power of youth. His life has become a symbol of perseverance, determination, and the pursuit of knowledge, especially for those who come from humble beginnings. 


Numerous institutions, scholarships, and awards have been named in his honor, continuing his work of promoting education, innovation, and national pride. The **Dr. APJ Abdul Kalam National Memorial** in Rameswaram stands as a testament to his enduring legacy.


Conclusion


Dr. APJ Abdul Kalam’s life was a shining example of how dedication, hard work, and an unwavering commitment to one’s country can lead to greatness. From humble beginnings in a small town in Tamil Nadu to becoming one of India’s most beloved Presidents, his journey is one of inspiration and hope. His vision for a developed India, his contributions to science and technology, and his passion for education continue to shape the nation’s future. 


In the words of Dr. Kalam, "Let us sacrifice our today so that our children can have a better tomorrow." His life remains a guiding light for those who aspire to build a better future for themselves and for the world.


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Saturday 18 May 2024

Apple's iPhone 16 Pro Max: A Comprehensive Overview📱

Apple's iPhone 16 Pro Max: A Comprehensive Overview

Apple's iPhone 16 Pro Max, the latest flagship from the tech giant, epitomizes the blend of cutting-edge technology and refined design that the company is renowned for. As the successor to the iPhone 15 series, the iPhone 16 Pro Max introduces several notable advancements, making it a highly anticipated release among tech enthusiasts and consumers alike.


Design and Build Quality

The iPhone 16 Pro Max maintains the sleek, premium design that Apple fans have come to expect. Constructed with aerospace-grade aluminum and surgical-grade stainless steel, the device feels both robust and elegant in hand. The back is made from durable, matte-textured glass that not only looks sophisticated but also minimizes fingerprints and smudges.

One of the standout design changes is the reduction of the notch, which is now significantly smaller, allowing for more screen real estate. This change enhances the overall viewing experience, making it more immersive. Additionally, the phone is available in a range of new colors, including an elegant Midnight Black, a stunning Starlight White, and a vibrant Pacific Blue.

Display

The iPhone 16 Pro Max features a 6.9-inch Super Retina XDR display, boasting an impressive resolution of 3200 x 1440 pixels. The ProMotion technology, with its adaptive refresh rate of up to 120Hz, ensures buttery-smooth scrolling and responsiveness, making every interaction feel seamless.

This display also supports HDR10 and Dolby Vision, providing vibrant colors, deep blacks, and exceptional contrast. Whether you’re watching movies, playing games, or browsing photos, the visual experience is second to none. The Ceramic Shield front cover continues to offer enhanced durability, reducing the risk of damage from drops and impacts.

Performance

At the heart of the iPhone 16 Pro Max is the new A18 Bionic chip. Built on a 3-nanometer process, this chip delivers unprecedented performance and efficiency. The CPU is up to 20% faster than its predecessor, and the GPU offers up to 30% improved graphics performance, making it ideal for gaming, augmented reality (AR) applications, and more.

The Neural Engine has also been upgraded, with 16 cores capable of performing 30 trillion operations per second. This enhancement significantly boosts machine learning tasks, enabling features like real-time language translation, advanced photo editing, and more sophisticated AR experiences.

Camera System

Apple has always been at the forefront of smartphone photography, and the iPhone 16 Pro Max is no exception. The device sports a triple-lens setup on the rear, consisting of a 48MP wide sensor, a 12MP ultra-wide sensor, and a 12MP telephoto sensor. This configuration allows for exceptional versatility in photography, from capturing expansive landscapes to detailed close-ups.

The main sensor features an improved f/1.5 aperture, allowing for better low-light performance and sharper images. The ultra-wide lens has been enhanced with a larger sensor and improved autofocus, making it ideal for capturing wide-angle shots and macro photography. The telephoto lens now supports up to 5x optical zoom and 30x digital zoom, providing greater flexibility in framing shots from a distance.

One of the most exciting additions is the new computational photography features, powered by the A18 Bionic chip. The iPhone 16 Pro Max introduces Smart HDR 5, which uses advanced algorithms to deliver more realistic and detailed images, even in challenging lighting conditions. Additionally, the ProRAW and ProRes video recording capabilities have been further refined, offering professional-grade tools for content creators.

Battery Life and Charging

Battery life has always been a critical factor for smartphone users, and the iPhone 16 Pro Max delivers in this department. Thanks to the efficiency of the A18 Bionic chip and a larger battery, the device offers up to 25 hours of talk time and up to 95 hours of audio playback.

The iPhone 16 Pro Max supports MagSafe wireless charging, with an improved 20W charging speed. This feature ensures that your phone charges quickly and efficiently, minimizing downtime. Additionally, the device supports 30W fast charging via a wired connection, allowing it to charge from 0% to 50% in just 30 minutes.

Software and Features

The iPhone 16 Pro Max ships with iOS 18, the latest iteration of Apple’s operating system. iOS 18 brings a host of new features and improvements, including enhanced privacy settings, redesigned widgets, and new customization options for the home screen.

One of the standout features is the new Focus mode, which allows users to create customized profiles for different activities, such as work, personal time, or sleep. This feature helps minimize distractions by filtering notifications and apps based on the user’s current activity.

Another significant addition is the enhanced Siri capabilities. The voice assistant is now more intuitive and responsive, with improved natural language processing and contextual understanding. This makes interacting with Siri more fluid and useful in everyday tasks.

Connectivity and Other Features

The iPhone 16 Pro Max supports 5G connectivity, ensuring fast and reliable internet speeds. With more 5G bands supported than ever before, users can enjoy better coverage and performance in more areas around the world.

The device also features Wi-Fi 6E, providing faster wireless speeds and improved performance in congested areas. Bluetooth 5.3 ensures stable connections with peripherals, and the Ultra-Wideband (UWB) technology enables precise location tracking for features like AirTag and improved AirDrop functionality.

Environmental Considerations

Apple continues its commitment to the environment with the iPhone 16 Pro Max. The device is made with 100% recycled rare earth elements in all magnets, 100% recycled tungsten in the Taptic Engine, and 100% recycled tin in the solder of the main logic board. The packaging is also designed to be more eco-friendly, with more than 90% of the materials used being recyclable.

Conclusion

The iPhone 16 Pro Max stands as a testament to Apple’s relentless pursuit of innovation and excellence. With its stunning design, powerful performance, advanced camera system, and enhanced battery life, it is a device that caters to both casual users and professionals. The integration of iOS 18 and the array of new features ensure that the iPhone 16 Pro Max not only meets but exceeds the expectations of modern smartphone users.

Whether you’re a tech enthusiast looking for the latest and greatest or someone who simply wants a reliable and feature-rich device, the iPhone 16 Pro Max is a compelling choice that continues Apple’s legacy of delivering top-tier smartphones.

Shall you buy it?


Deciding whether to buy the iPhone 16 Pro Max depends on several factors, including your current phone, your needs, and your budget. Here are some considerations to help you decide:

Reasons to Buy the iPhone 16 Pro Max

1. **Cutting-Edge Technology**: If you want the latest in smartphone technology, the iPhone 16 Pro Max offers significant improvements in performance, camera capabilities, and display quality.

2. **Superior Camera System**: For photography enthusiasts, the advanced camera system with features like Smart HDR 5, ProRAW, and ProRes video recording can be a major selling point.

3. **Performance and Efficiency**: The A18 Bionic chip provides exceptional speed and efficiency, which is ideal for gaming, multitasking, and running demanding apps.

4. **Battery Life**: With enhanced battery life, the iPhone 16 Pro Max ensures you stay powered throughout the day without frequent recharging.

5. **Future-Proofing**: Investing in the latest model means you’ll have access to the latest software updates and features for several years, ensuring your device remains relevant.

Reasons You Might Hold Off

1. **Price**: The iPhone 16 Pro Max is likely to be one of the most expensive smartphones on the market. If budget is a concern, there might be more cost-effective alternatives.

2. **Current Device**: If you already have a relatively recent iPhone, such as the iPhone 14 or 15, the improvements might not be significant enough to warrant an upgrade.

3. **Specific Needs**: Consider whether you truly need the advanced features. If you use your phone primarily for basic tasks like calling, texting, and light app usage, a lower-end model might suffice.

4. **Other Options**: Explore other flagship models from competitors like Samsung, Google, or OnePlus. They might offer features that are more aligned with your preferences at a different price point.

Questions to Ask Yourself

1. **What is my budget?** Ensure that purchasing the iPhone 16 Pro Max fits within your financial plans without causing undue strain.

2. **How old is my current phone?** If your current phone is significantly outdated or experiencing issues, upgrading makes more sense.

3. **How do I use my phone?** Consider your primary uses for a smartphone. If you frequently use it for photography, gaming, or work-related tasks, the investment might be worth it.

4. **Am I locked into an ecosystem?** If you’re already deeply integrated into the Apple ecosystem with other devices like a MacBook, iPad, or Apple Watch, staying with an iPhone might provide a more seamless experience.

 Conclusion

The iPhone 16 Pro Max is a top-tier smartphone with a host of impressive features, making it an excellent choice for those who want the best technology available. However, it's essential to weigh the benefits against the cost and consider your specific needs and circumstances. If the features align with your usage patterns and the price is within your budget, it could be a worthwhile investment. Otherwise, exploring other models or waiting for future releases might be a better option.


Friday 17 May 2024

Top 10 summer gadgets for 2024

 Top 10 Summer Gadgets for 2024

Summer 2024 brings a plethora of exciting gadgets perfect for enhancing your warm-weather experiences. Here’s a roundup of the top 10 summer gadgets:

1. **Portable Solar Charger**:
   - Ideal for camping trips or beach days, these chargers keep your devices powered using the sun's energy. Models like the Anker PowerPort Solar are compact and efficient.

2. **Wearable Air Conditioner**:
   - Devices like Sony's Reon Pocket offer personal cooling, perfect for hot summer days. They fit discreetly under your clothes and provide adjustable cooling.


3. **Smart Sunglasses**:
   - Combining style and technology, smart sunglasses like Ray-Ban Stories offer features such as built-in cameras, speakers, and voice control, enhancing your outdoor activities.

4. **Waterproof Bluetooth Speakers**:
   - Durable and portable, speakers like the JBL Flip 6 deliver high-quality sound by the pool or at the beach. Their waterproof design ensures they can handle splashes and submersion.

5. **Action Cameras**:
   - Capture summer adventures with cameras like the GoPro Hero 12. These compact, rugged devices offer stunning video quality and are perfect for recording water sports and hikes.

6. **Portable Projectors**:
   - Create outdoor movie nights with projectors like the Nebula Capsule II. They are compact, battery-powered, and deliver high-quality projections on any flat surface.

7. **Smart Grills**:
   - Elevate your BBQ game with smart grills like the Traeger Timberline. These grills offer Wi-Fi connectivity, allowing you to control temperature and cooking times via an app.

8. **Hydration Tracking Water Bottles**:
   - Stay hydrated with bottles like HidrateSpark, which track your water intake and remind you to drink more through an app.


9. **Foldable Electric Scooters**:
   - For convenient and eco-friendly travel, foldable electric scooters like the Segway Ninebot are perfect for zipping around town or exploring new areas.

10. **Cooling Smart Mattress**:
    - Ensure a good night's sleep with smart mattresses like the Eight Sleep Pod Pro, which offer temperature regulation to keep you cool during hot nights.

These gadgets are designed to enhance your summer, offering convenience, entertainment, and comfort. Whether you’re planning outdoor adventures or simply relaxing at home, there’s something for everyone on this list.

Examples of all :

1. **Portable Solar Charger**: Anker PowerPort Solar
2. **Wearable Air Conditioner**: Sony Reon Pocket
3. **Smart Sunglasses**: Ray-Ban Stories
4. **Waterproof Bluetooth Speakers**: JBL Flip 6
5. **Action Cameras**: GoPro Hero 12
6. **Portable Projectors**: Nebula Capsule II
7. **Smart Grills**: Traeger Timberline
8. **Hydration Tracking Water Bottles**: HidrateSpark
9. **Foldable Electric Scooters**: Segway Ninebot
10. **Cooling Smart Mattress**: Eight Sleep Pod Pro

You can easily find images of these gadgets online.

Thanks for reading follow us for more such articles and enhance you are knowledge.

Sunday 12 July 2020

Learn how UPS works with its repairing, circuit diagram and waveform

Hello guys.
Have you ever wondered how UPS system works, that you can find easily besides you PC powering to it. Yes you are correct that cuboid box which supplies power to your PC, monitor if have, your wifimodem and what not. Today we are going to talk about UPS system. So lets get started.

UPS reffers for uninterrupted power supply which means you will have continous power without any interruption in case for pwer failure. There are nany types of UPS from which OFF-LINE and ON_LINE are preety common.


The UPS found at our PC is online .Here Online means like we are having power at the same time we are charging our battery in our UPS system In a UPS, the energy is generally stored in flywheels, batteries or super capacitors.
It has very short on-battery run time; however this time is enough to safely shut down the connected apparatus or to switch on a standby power source. 
Please get to the video to know about the complete knowledge of such type of UPS.

Monday 4 May 2020

Repair a Dead Power Bank || Repair and Replacement

One of my friend recently gave a power bank which was completely dead. He is not using so he decided to gave me. This video will show you how to repair such power banks with some repair and replacements. The batteries inside the power bank was corroded, so i tried to remove them out and gave a new life.
You can replace new batteries for full capacity of power bank. Capacity of Power Banks Measured in "mah" (milli ampere hours) Feel free to ask any query. Subscribe for more cool Projects!

Small Introduction: Portable Power Banks are comprised of a special battery in a special case with a special circuit to control power flow. They allow you to store electrical energy (deposit it in the bank) and then later use it to charge up a mobile device (withdraw it from the bank). Power Banks have become increasingly popular as the battery life of our beloved phones, tablets and portable media players is outstripped by the amount of time we spend using them each day. By keeping a battery backup close by, you can top-up your device(s) while far from a wall outlet.
The Power Banks we're talking about are good for almost any USB-charged devices. Cameras, GoPros, Portable speakers, GPS systems, MP3 players, smartphones and even some tablets can be charged from a Power Bank - practically anything that charges from USB at home can be charged from a Power Bank - you just have to remember to keep your Power Bank charged, too! Power Banks may also be known as Power Stations or Battery Banks, too.
First Disassemble the power Bank carefully. You need to apply little bit of force but be carefull not to break the circuit board inside. Do not forget to take safety precautions.
Here observing carefully in my case i found corrosion/rust over all my individual Li-ion battery . So in order to remove this use white vinegar and rub over the surface where corrosion/rust is present. This will clean the contact surfaces of the battery and now we are ready to solder all batteries together.
If you don't have White vinegar the you can do it via making your own solution .Follow these steps-
This process uses two solutions, one is regular table salt and vinegar. Any kind of vinegar will fine here. Its the acidity and corrosiveness of the salt and vinegar together that you want. The other solution is Sodium Bicarbonate/baking soda, and water. This is used to neutralize the corrosive properties of the other solution, and to further clean the battery terminals.
Step 1: Take off the Battries.
Step 2: Get 2 containers, one for each solution.
Step 3: Get 1 tablespoon of raw salt, and put it in one of the container. Fill up the rest of the container with vinegar, and stir the both together. Generally we put as much salt in the vinegar as will dissolve.
Step 4: Get 1 tablespoon of Sodium Bicarbonate(baking soda) and add it to the other container. Fill up the rest with water, and stir well. Add more baking soda to make it cloudy. The amount is not important, as long as it is alkaline to cancel the acid of the vinegar solution.
Step 5: Take the cotton ball or any cloth piece and rub over the battery terminal
Step 6: After 2 minutes or so, the terminal will look very shiny and new after appplying the vinegar solution. The acid and salt in the solution is etching away the oxides, exposing the bare metal. Make sure the metal is uniformly shiny. Leave it in longer if it is not perfectly clean throughout.
And you are done!! Shiny new battery terminals are ready for soldering.:)
Check the Charging PCB with the help of multimeter, whether you are getting desirable output voltage or not. The nominal voltage of Li-ion cells is 3.6V-3.7V. I am getting output voltage of around 4.1volt that is enough to charge li-ion battery.
Now its time to solder the batteries. Unluckly while observing carefully i found that one of my four battery is dead because it was sweeled from the upperpart that simply means it wll not work. So i contuinuied my soldering part with just 3 batteries. Offcourse this reduced my Power bank capacity.
So lets do some Calculations over that.
In order to calculate overall capacity of bank we have to first determine the capacity of individual battery . So for this we have one formula:
Capacity of one cell(Battery)= Total Capacity of power bank / No of cells
= 10400 / 4
= 2600 mAh
That means the capacity of one cell is 2600 milli ampere hours(mAh)
OR
2.6 Ampere hour(Ah)
Now,
New capacity of power bank = Capacity of one cell * No of cells working cell left

That is,
=2600 * 3
=7800 mAh or 7.8 Ah
Our power Bank capacity reduced from 10400mAh to 7800mAh.
Enough Calculation, now its time to put all together. Pack the powerbank once again by installig batteries and other necessary parts.
Bring back the USB cable and Plug and finally just check weather powerbank starts cahrging or not. And wow we gave a power bank a new life with capacity of 7600mAh.
You can see after charging powerbank a little bit, it is now ready to use:)
You just gave a new life to a dead power bank;)

Now use and Enjoy.:D
This marks the end of this instructable. Hope you liked it.
Please vote for the project and share if you think it was awesome.
Don't forget to follow for more cool projects!!

Friday 20 May 2016

DIY-Solar Energy USB Phone/Tablet Charger

Let's start with a sweet intro as the intro says everything about what we are doing here!
Introduction:
Solar is a Wide source of energy all around the Globe that is even used by aliens Who knows..:) We can make full use of it with many applications including electricity Generation, water heating, cooking food even lit a fire and the list is on and on. For electricity Generation, we are pretty familiar with Solar panels. They simply Convert light energy into electrical energy using photons present in energy packets of light energy Solar panels possess a simple physics but that is a subject for another tutorial. In this blog let's build something useful. So I decided to make utilization of this energy in order to charge my mobile or tablet. Also, it can be used to run other DC appliances(Low voltage and current) Like LED, Decoration lights, Power your Arduino even, etc.


So now in this, i will show you how to make DIY-Solar Energy USB Phone/Tablet Charger in a super easy way with a short tutorial
Let's Get Started!!



Step -1: Components you need

Here is the list of components we require:
1. 12v solar panel
2. Zero PCB or similar
3. PCB terminals
4. USB slot (you can salvage also)
5. Capacitors-10microF*2
6. 7805 Voltage Regulator
> Dc-Dc buck Converter will work fine
Tools you will need also:
  • Soldering Iron
  • Cutting/stripping tools
  • Glue gun


Step -2: Little work on Solar Panel


When we buy a Solar panel, at the back side of it we will find two terminals that are one positive and the second negative. We will be going to add a terminal at the back side of the panel.
Just solder a diode at the positive terminal at the panel and then to the PCB terminal. Also, connect the negative of the panel to the second PCB terminal pin.
We now just need to insert the wires and tighten the screw.



Step -3: Preparing Circuit Module


It uses a very common and simple circuit in order to step down the solar panel to around 5.0v. This voltage is necessary to charge up the phone or any gadget which requires 5v.
If you want to know more about voltage regulator IC then refer to this link
Connect the circuit according to the schematic shown:



 


Step -4: Preparing the case for mounting the USB slot and circuit




I use simple plastic casing laying around in my garage. You can salvage from any old packaging.
Just trim off a slot equal to USB and also two holes opposite to the USB slot for the input terminal from the Solar panel.
If necessary file it. Insert the USB into place as shown in the photos


Step -5: Soldering time!

















Solder the wire to the USB pins that is the outer pins of the slot. Middle pins are for the Data connections we need not required to connect anything with them. So leave them.
Solder the Circuit as per the schematic. Connect the USB to the Circuit as shown. Now we are ready to install them into the case.

Step -6: Assembling everything and Packing



Insert the USB into the case properly and glue it.
Trim off the unnecessary PCB such that it can Fit into our Plastic Case. If needed to Add support to USB with the help of a piece of paper as I did in the pictures.
That Green terminal is used to connect to Solar Panel. Glue them all and finally, we are done.
Connect the wires as long as you want as per your requirement.
Plug the USB cable into the slot
Connect to your phone or tablet.

Step -7: See what you have made!!



Finally, We have made our simple and Cheap Solar USB charger. It can charge your mobile for free, and credit goes to Sun.:) Yeah!
Hope you liked this blog.
Please share if you think it was awesome and see the videos for working on such a project and first charging.
Don't forget to follow for more cool projects!!
Feel free to have any queries.
More videos on my Youtube channel 

#Thanks.

Monday 16 May 2016

RGB LED Tutorials

In this blog I Will show you how to get start with RGB LED using Arduino.

Small Introduction:

RGB LED contain red, blue and green LED's. Blue and green combine to produce turquoise, green and red combine to produce yellow, red and blue combine to make violet, red, green and blue combine to make white. There are literally more than 16,000,000 possibilities with the more sophisticated controllers. With an RGB LED you'll be able to produce any colour glow your heart desires.Intresting isnt it! At first using an RGB LED seems quite complex, but it quite quickly becomes clear when you starts hand on over these types. In this blog i will show to how to begin with RGB leds with some basic codes and finally i will show you 5 different colour scheme using RGB Led with arduino with different codes.
Lets get Started!
Attention : I have used COMMON ANODE(+) type LED.

Look out the video First!!


Step -1: Part Lists

1. RGB LED-Common Anode type
2. Arduino UNO or Nano will also work 
3. Resistor- 100 ohm~Or near by Value
4. NPN Transistor-BC 547
5. Potentiometer 10K
6. ON/OFF Push Button
7. Connecting wires and leads

Step 2: Understand RGB and Circuit


When you will buy a RGB led it will be available in two configuration that is Common Anode And Common Cathode.So but it properly.

Code 1: Simple Blink code

Dr. APJ Abdul Kalam: The Missile Man and People's President

Dr. Avul Pakir Jainulabdeen Abdul Kalam, affectionately known as the “Missile Man of India” and the “People's President,” is one of the ...