DEV Community: Omprakashchauhan

Built with Google Gemini: I Built a Prompt Engineering Tool — and It Taught Me More Than I Expected

Omprakashchauhan — Sun, 01 Mar 2026 16:24:06 +0000

This is a submission for the Prompt Engineering Tool

What I Built with Google Gemini

The idea came from a very practical frustration. While working with AI models, I realized I was spending more time refining prompts than building features. A slightly vague instruction would produce an average response. A more structured instruction would produce something great. But figuring out that structure required trial, error, and wasted API calls.

PromptCraft acts as an intelligent middle layer between the user and Gemini.

Instead of sending raw prompts directly to the model, users pass them through PromptCraft first. The system:

Analyzes clarity and intent
Suggests improvements
Rewrites the prompt in a more structured format
Explains why the improved version is better

_In simple terms, Gemini is not just generating answers — it is being used to improve how we talk to AI.
_

Architecture Overview

The system works in three stages:

User Prompt Input
Prompt Analysis & Refinement (Gemini API)
Improved Prompt + Explanation Output I used carefully designed system instructions to guide Gemini into behaving like a prompt engineering mentor instead of a general assistant.

Key technical considerations:

Controlled temperature to reduce randomness
Strict output formatting instructions
Structured response parsing
Clear role-based instruction design
Error handling for incomplete responses

One of the most important design decisions was separating:

The analysis role (evaluate prompt quality)
The refinement role (rewrite clearly)
The explanation role (teach the user what changed) That separation significantly improved consistency.

Demo

GitHub Repository: https://github.com/omprakash2929/PromptCraft

Example workflow:

Gemini-Refined Prompt via PromptCraft:

“Provide a beginner-friendly explanation of DevOps including its key principles, core practices (CI/CD, automation, monitoring), and why it is important in modern software development. Use simple language and a short real-world example.”

The difference in output quality is immediately noticeable.
This shows how structured prompting changes model performance without changing the model itself.

What I Learned

1. AI Is Easy to Use — Hard to Control

Calling the Gemini API was straightforward.
Controlling response quality was not.
The real complexity lies in instruction design. Small changes in phrasing caused large differences in output structure and usefulness.

I learned that prompt engineering is not about longer prompts — it’s about clearer constraints.

2. Deterministic Thinking Doesn’t Apply

As developers, we expect predictable outputs for identical inputs. AI systems don’t behave like that.

Even with the same prompt, slight variations occur. To manage this, I:

Lowered temperature for refinement tasks
Explicitly constrained format requirements
Added structured output expectations

This reduced unpredictability significantly.

3. System Prompts Matter More Than Business Logic

Most of the product quality improvement didn’t come from adding more code.

It came from refining:

Role instructions
Tone constraints
Output format templates
Evaluation criteria

That was a surprising but powerful lesson.

4. Soft Skills Improved Too

Working with Gemini improved:

Clarity in writing
Instruction precision
Thinking from the model’s perspective
Patience with iterative improvements

It also made me more intentional about language in documentation and architecture design.

Google Gemini Feedback

What Worked Well

Strong contextual understanding
High-quality natural rewriting
Good balance between structure and creativity
Fast response times
Reliable intent interpretation

Gemini performed particularly well when tasked with structured rewriting and clarity improvement.

Where I Faced Friction

Occasionally verbose responses even when conciseness was requested
Sometimes superficial improvements instead of deeper structural refinement
Required very explicit formatting instructions for consistent output
To address this:
I reinforced system-level constraints.
I added role clarity (e.g., “You are a prompt engineering expert…”).
I constrained output format to bullet structures where needed.

Once properly guided, Gemini’s consistency improved significantly.

Reflection

This project changed how I view AI integration.
Initially, I thought I was building a tool that improves prompts.
In reality, I was learning how to design better instructions for intelligent systems.
PromptCraft taught me that AI isn’t magic. It responds directly to clarity, structure, and constraint.
The better you communicate, the better it performs.
And that realization will influence how I build future AI-powered products.

What’s Next

Planned improvements:
Prompt scoring system
Token usage analytics
Prompt history tracking
Backend proxy for secure API handling
Deployment on Cloud Run
Browser extension version

The long-term vision is to evolve PromptCraft into a developer-focused toolkit for serious prompt engineering workflows.

devchallenge #geminireflections #gemini

ai

🖥️ Retro Office PC — CSS Art: Office Culture 🎨

Omprakashchauhan — Sun, 06 Jul 2025 11:22:25 +0000

This is a submission for Frontend Challenge: Office Edition sponsored by Axero, CSS Art: Office Culture._

Inspiration

For many, "Office Culture" instantly brings images of modern laptops, remote setups, or coffee machines — but I wanted to take it back to the roots.
I recreated a nostalgic IBM-style Retro PC entirely using HTML and CSS, symbolizing the early tech that laid the foundation for office life as we know it.

From green-glow CRT screens to floppy drives, this design captures the classic aesthetic of 80s office setups — when monitors weighed more than your desk, and "Hello World" on a terminal felt revolutionary.

Demo

Live Preview: CodePen Demo Link

Screenshot:

Journey

Building this CSS art was a fun exploration of blending nostalgia with pure frontend creativity:

✅ Pure HTML & CSS Only — no images, no JS
✅ Custom Fonts for that authentic terminal look
✅ CRT Screen Glow & Scanline Effects
✅ Detailed Case Design including power buttons, LED indicators, floppy drives.

What I Learned:

Leveraging CSS gradients and shadows to simulate realistic screen textures
Using CSS-only techniques to model 3D-like components (floppy slots, buttons)
How much personality you can express with pure code and a bit of creativity

🚀 Final Thoughts

This was a fun throwback to simpler yet heavier! machines and the dawn of office computing.

Thanks to Axero and DEV for inspiring this nostalgic coding moment!

🚀 Hack Club Summer of Making 2025: Code, Create & Win Prizes!

Omprakashchauhan — Tue, 17 Jun 2025 11:32:32 +0000

Are you a high (college) school student and working professional (or know someone who is) who loves building cool things with code? Or maybe you’re someone who wants to support teens in tech and get rewarded for it? Either way, Hack Club’s Summer of Making 2025 is the perfect opportunity to unleash creativity, build amazing projects, and even win awesome prizes — all for free.

🔗 Join Now: https://summer.hack.club/bdh
🔁 Refer & earn prizes: pyramid.hackclub.com

🌟 What is the Summer of Making?

The Summer of Making is an annual global initiative by Hack Club — a community of high school and working professional hackers and builders — to support young makers in creating real-world tech projects. Whether you’re building websites, robots, games, or hardware hacks, you can get funding, mentorship, and prizes for your work.

It’s not a competition — it’s a celebration of youth creativity and open-source building.

🎁 How Do You Win Prizes?

There are two paths to earning awesome rewards like hardware kits, tech swag, and exclusive Hack Club merchandise:

👩‍💻 Build Something Cool (Ages >15) Head to summer.hackclub.com Sign up and start building a coding or hardware project Submit your project for a chance to get free hardware or gift boxes!
🔗 Refer Friends (All Ages Can Do This!) Go to pyramid.hackclub.com and log in with GitHub You’ll get a unique referral link + poster generator Earn 3 tickets per sign-up, 1 ticket per poster, and 3 bonus tickets per poster sign-up The more tickets, the more chances to win epic prizes! ✅ Tip: Share your referral link on social media, in Discord servers, school groups, or put up posters in libraries and cafes.

📍 Real Examples of How to Earn Tickets

Put posters with your QR code in public spaces like:
🏫 Schools
☕ Coffee shops
📚 Libraries
🛒 Grocery stores
Share your unique link online:
💬 Group chats
🧵 Threads on Twitter/X
📌 Discord statuses
📲 WhatsApp/Telegram/Facebook
You can track your referral progress in real time through your Pyramid dashboard.

🌍 Global Program, Free Shipping!

Prizes ship from Hack Club HQ in Vermont, USA
Free international shipping is covered!
You’re only responsible for any customs fees (if applicable in your country)

🧠 Why You Should Join or Share

Build your portfolio with real projects
Gain experience with open source and real tech tools
Win hardware kits and other fun prizes
Be part of a global community of teenage makers
Help other teens discover tech & get rewarded for spreading the word!
🏁 Let’s Make This Summer Count!
Whether you’re hacking together a hardware project, building a personal app, or simply helping others discover this incredible opportunity, the Hack Club Summer of Making 2025 is something you won’t want to miss.

👉 Join or Refer Now:

🔗 [summer.hackclub.com](https://summer.hack.club/bdh
🔁 Referral portal: pyramid.hackclub.com

Let’s make, learn, and share together this summer. Who knows — your next big project might just start here!

🙌 PS: Use My Link to Join & Help Me Earn Tickets!
[Insert your unique referral link here]

Thanks for supporting and spreading the word! 💙

A New Era for Node.js Framework: Introducing Express v5

Omprakashchauhan — Wed, 16 Oct 2024 15:08:04 +0000

Ten years in the making, Express v5 introduces subtle but significant changes, aiming to streamline development, improve security, and prepare the ecosystem for future growth. The release is designed to be intentionally "boring"—it doesn’t introduce flashy new features but rather focuses on core updates that unblock the ecosystem, allowing developers to build more efficiently while laying the groundwork for future enhancements.

Express.js has been the go-to web framework for building server-side applications with Node.js for over a decade. Its simplicity, flexibility, and vast ecosystem have made it one of the most popular choices among developers worldwide. With the long-awaited release of Express v5, the framework brings new updates and improvements that enhance the development experience while staying true to its minimalist and unopinionated philosophy.

Why Upgrade to Express v5?

The release of Express v5 brings several key features, bug fixes, and performance enhancements that modernize the framework. While previous versions were reliable and functional, v5 addresses the need for features present in more modern web frameworks by focusing on:

Support for modern JavaScript (ES6+) features
Better handling of async/await and promises
Improved routing and middleware management
Enhanced performance and security
More powerful error handling

Key Features and Improvements in Express v5

1. Full Support for Promises and Async/Await

One of the most significant updates in Express v5 is its native support for promises and async/await. Previously, Express relied on callback-based middleware, which often led to callback hell in complex applications.

In Express v5, you can now write cleaner and more readable asynchronous code using async/await.

Example in Express v4 (callbacks):

app.get('/user/:id', (req, res, next) => {
  User.findById(req.params.id, (err, user) => {
    if (err) return next(err);
    res.json(user);
  });
});

Express v5 (async/await):

app.get('/user/:id', async (req, res, next) => {
  try {
    const user = await User.findById(req.params.id);
    res.json(user);
  } catch (err) {
    next(err);
  }
});

The new support for promises and async/await not only reduces complexity but also aligns Express with modern JavaScript standards.

2. Middleware and Router Enhancements
Express v5 introduces improvements in how middleware and routers are handled. In earlier versions, routers and middleware were often confusing to manage in complex applications.

Now, Express v5 offers better control and more granular error handling for middleware, making it easier to create modular and scalable applications. Middleware functions can also return promises, which allows for cleaner asynchronous code in middleware chains.

3. Improved Error Handling
Error handling in Express v4 was functional but could become cumbersome when working with asynchronous operations. With Express v5, error handling is now more intuitive and integrates seamlessly with promises and async/await.

For example, if an error is thrown inside an async route handler, Express will automatically catch it and forward it to your error-handling middleware. This saves time and effort while improving the reliability of your application’s error management.

app.use(async (req, res, next) => {
  try {
    await someAsyncTask();
  } catch (err) {
    next(err);  // Express v5 handles this smoothly
  }
});

4. Deprecated Synchronous Middleware]
In keeping with the shift toward modern JavaScript practices, Express v5 deprecates synchronous middleware functions. All middleware and route handlers are now expected to be either asynchronous or return a promise.

This ensures that Express apps remain responsive and efficient, particularly in high-load environments where blocking synchronous operations can degrade performance.

5. Performance and Security Enhancements
Express v5 includes multiple under-the-hood optimizations that make it faster and more secure. Some of these improvements include:

Better memory management: Express v5 is more efficient when handling large numbers of requests, reducing memory usage and improving throughput.
Security enhancements: The framework has integrated better practices for handling HTTP headers and protecting against common web vulnerabilities like cross-site scripting (XSS) and cross-site request forgery (CSRF).
By adopting these improvements, Express v5 helps developers build more secure and scalable applications.
6. Ecosystem and Community Support
Express has always been supported by a robust ecosystem of middleware, libraries, and tools. While v5 introduces many changes, it maintains backward compatibility with most existing middleware. This means you can upgrade to Express v5 without having to overhaul your entire project.

The Express community remains active and vibrant, ensuring that v5 continues to evolve and meet the needs of developers.

How to Upgrade to Express v5

Upgrading to Express v5 is a relatively straightforward process, but it’s essential to test your application thoroughly before deploying the new version. Here’s a quick guide to help you upgrade:

Install Express v5 by running:

npm install express@5

2.Update your route handlers to use async/await, especially if you’re using asynchronous code.
3.Refactor synchronous middleware to return promises or use async functions.
4.Test your application thoroughly to catch any potential issues, especially if you’re relying on third-party middleware.

Compatibility Note
Most existing middleware should continue to work with Express v5, but if you’re using custom middleware or less common packages, you may need to verify compatibility and make necessary adjustments.

Space Invaders - Alien Attack 🌌👾 web game

Omprakashchauhan — Sat, 28 Sep 2024 13:32:05 +0000

Space Invaders - Alien Attack 👾🌌

This is a submission for the Web Game Challenge, Build a Game: Alien Edition.

What I Built

I created Space Invaders - Alien Attack, a browser-based game where you take control of a space fighter and defend Earth from an onslaught of alien invaders. Inspired by the classic Space Invaders arcade game, this project focuses on delivering a fun and retro gaming experience entirely in the browser using HTML5, CSS3, and JavaScript.

Key Features:

Retro Pixel Graphics: Aesthetic that brings back the 80s arcade vibe.
Progressive Difficulty: Alien waves speed up as you advance, increasing the challenge.
Smooth Controls: Use arrow keys to move and the spacebar to shoot.
High Score Tracking: Keep track of your top scores across game sessions using local storage.

Demo

Play the game directly in your browser here.

Check out the source code on GitHub: GitHub Repo.

You can also embed the game directly here.

Preview

Journey

This project was an exciting challenge to recreate a nostalgic game experience with modern web technologies. Here's a bit about my journey:

What I Learned:

Game Development with JavaScript: Building the game loop, handling user input, and collision detection were key areas of focus.
Responsive Design: Ensuring the game works seamlessly across desktop and mobile screens.
Optimizing for Performance: Managing frame rates and optimizing rendering to ensure smooth gameplay.

What I'm Proud Of:

Smooth Player Controls: Creating responsive and fluid controls that feel satisfying to use.
Game Mechanics: Implementing progressively harder alien waves and handling collision detection for a dynamic experience.

What's Next:

Power-Ups: I plan to add power-ups like shields or multi-shot to increase gameplay variety.
Leaderboard: Integrating a global leaderboard using an API to track high scores globally.
Level Design: Adding more distinct levels with new alien types and mechanics.

Thanks for checking out my submission! I hope you enjoy playing Space Invaders - Alien Attack as much as I enjoyed building it! 👾🎮

If you have any feedback or want to contribute, feel free to drop a comment or open an issue on GitHub.

summer 2024 june

Omprakashchauhan — Sat, 08 Jun 2024 05:29:56 +0000

This is a submission for Frontend Challenge v24.04.17, CSS Art: June.

Inspiration

As India enters the summer of 2024, it's becoming increasingly clear how crucial tree cover is to our environment. Looking back at the past, when lush greenery was more widespread, we can see a stark contrast to the present, where the decrease in tree cover has resulted in severe heat waves and environmental challenges.

The Past: In previous decades, the Indian landscape was adorned with vast forests and urban greenery, and trees played a crucial role in moderating temperatures, providing shade, and maintaining ecological balance.

Cooler temperatures: Trees absorb sunlight and release moisture into the air through transpiration, significantly cooling the surroundings.

Cleaner air: They act as natural air filters, trapping dust, pollutants, and producing oxygen.

Healthier ecosystems: Forests support biodiversity, providing habitat for countless species and maintaining soil health.

The present: Reduced tree cover and its effects.

Today, rapid urbanization and deforestation have drastically reduced the number of trees across India. This loss has led to numerous adverse effects:

Rising Temperatures: Without sufficient tree cover, urban areas experience the "urban heat island" effect, where concrete and asphalt absorb and retain heat.
Increased Pollution: Fewer trees mean less filtration of pollutants, leading to poorer air quality.
Biodiversity Loss: The destruction of habitats has resulted in the decline of many plant and animal species.
The Way Forward
Understanding the critical role of trees in combating climate change and mitigating heat waves is imperative. To ensure a sustainable future, we must:

Plant More Trees: Engage in massive afforestation and reforestation projects.
Protect Existing Forests: Implement and enforce laws to prevent illegal logging and deforestation.
Urban Greening: Encourage green city spaces, such as parks, green roofs, and community gardens.

Demo

Journey

My Process
Creating the inspirational text and HTML/CSS design involved several key steps:

Understanding the Requirements:

The first step was to clearly understand the user's request to create a design highlighting the impact of tree cover on summer heat in India, contrasting the past with the present.
Drafting the Content:

I composed an inspirational message that reflects on the historical significance of tree cover, the current issues due to deforestation, and a call to action for the future.
Designing the HTML Structure:

The next step was to structure the content in HTML, ensuring it's logically organized and easy to read.
Styling with CSS:

I applied CSS to enhance the visual appeal of the content, focusing on readability, aesthetics, and highlighting important points.
Iterative Improvements:

Finally, I reviewed and refined both the text and the code, ensuring clarity, coherence, and functionality.
What I Learned
Impact of Trees: Researching and writing about the role of trees in climate regulation reinforced my understanding of their importance in maintaining ecological balance.
Content Structuring: Balancing detailed information with readability is crucial. Breaking down the content into clear, concise sections helps in better communication.
HTML and CSS Styling: Revisiting foundational web development skills reminded me of the importance of clean, semantic HTML and effective CSS styling for presenting information.
Things I Am Particularly Proud Of
Clarity and Impact: I am proud of how the inspirational text turned out, effectively communicating the critical message about the importance of trees.
Visual Design: The final HTML and CSS design is clean, visually appealing, and enhances the readability and impact of the content.
Responsive Layout: Ensuring that the design is responsive and looks good on various devices is a crucial aspect that was successfully implemented.
What I Hope to Do Next
Interactive Elements: In future iterations, I hope to incorporate interactive elements, such as animations or interactive infographics, to make the message even more engaging.
Deeper Research: Diving deeper into specific case studies or data related to deforestation and its impacts in India could add more depth to the content.
Broader Campaigns: Expanding this concept into a broader campaign, including social media strategies and community engagement tools, could amplify the impact and reach of the message.

Placeholder Contributor

Omprakashchauhan — Mon, 02 Oct 2023 04:56:56 +0000

Intro

Highs and Lows

Growth

Demystifying React Custom Hooks In 2023

Omprakashchauhan — Sun, 20 Aug 2023 12:50:12 +0000

Easy waye to make custome Hooks

React custom hooks are a powerful tool that allows developers to extract reusable logic from components, promoting cleaner and more maintainable code. In this article, we'll take a user-friendly approach to understanding custom hooks in React, breaking down the concepts and providing a practical example to illustrate their usage.

Understanding Custom Hooks:
Custom hooks are JavaScript functions that encapsulate specific behavior, making it easy to reuse that behavior across multiple components. They are named with the prefix “use” (e.g., useCustomHook) to indicate that they follow the rules of hooks and can access other hooks if needed.

Custom hooks offer a way to share logic that doesn’t require the complexity of state management solutions like Redux or Mobx. They are especially useful for managing side effects, handling API calls, managing local storage, and more.

more Info with live example: visit now

JavaScript vs. Python: Which Programming Language is Right for You in 2023?

Omprakashchauhan — Sun, 25 Jun 2023 11:07:15 +0000

python VS JavaScript

Python and JavaScript are two powerful programming languages, each with its own strengths and areas of expertise. Python is known for its simplicity, readability, and versatility, making it popular for web development, data analysis, machine learning, and automation. JavaScript, on the other hand, excels in web development, offering interactivity and dynamic content creation. With its extensive libraries and frameworks, Python caters to a diverse range of applications, while JavaScript's popularity lies in its role as the backbone of interactive web pages. The choice between Python and JavaScript depends on project requirements, developer background, and desired outcomes. Understanding their differences helps programmers select the right language for building robust and innovative applications.

Read Full Blog About

Create React App craete[ Chat web application]

Omprakashchauhan — Mon, 21 Nov 2022 13:35:43 +0000

Welcome to my Let’s Build: With React js. This series focuses on building a Real Time Chat web application using Firebase Connect. Users can sign up, login and chat with friends and 100% secure application.

Screenshot web application

Home page

Get the source code

click here

Available Scripts

In the project directory, you can run:
first run this commend your powershell

npm install
npm start

Runs the app in the development mode.
Open http://localhost:3000 to view it in your browser.

The page will reload when you make changes.

You may also see any lint errors in the console.

Deployment server

How To deploy this project run
npm run build

Open your hosting filemanger and past build folder all file
Deploy successfully

Crypto Send and receive React web3.O application

Omprakashchauhan — Sat, 30 Apr 2022 12:29:57 +0000

Overview of My Submission

I build is the inspiration behind the idea! one Days i use crypto app see and i think to create react base web3.O appllication.Cryptonite is a cryptocurrency application utilizing the MERN stack and blockchain technology written in JavaScript framework react. React is powering the front end views with Express routing our backend to appwrite. There are also several npm packages we employed to deliver the features of our MVP. Below we'll discuss certain features and why we made the decisions we did in our application.GitHub repository,and includes the MIT permissive license

Submission Category:

# Web3 Wunderkinds

Link to Code

GitHub repository `{% https://github.com/omprakash2929/Web3.O_project %}`

Additional Resources / Info

visite Demo website `{%https://omprakash2929.github.io/Web3.O_project/ %}`

Screenshots Website!

UserName:

*@omprakash2929 *

[Reminder]: # (Submissions are due on May 12th, 2022 @ 11:59 PM UTC).

DEV Community: Omprakashchauhan

Built with Google Gemini: I Built a Prompt Engineering Tool — and It Taught Me More Than I Expected

What I Built with Google Gemini

Architecture Overview

Demo

Example workflow:

Gemini-Refined Prompt via PromptCraft:

What I Learned

1. AI Is Easy to Use — Hard to Control

I learned that prompt engineering is not about longer prompts — it’s about clearer constraints.

2. Deterministic Thinking Doesn’t Apply

This reduced unpredictability significantly.

3. System Prompts Matter More Than Business Logic

That was a surprising but powerful lesson.

4. Soft Skills Improved Too

Google Gemini Feedback

What Worked Well

Where I Faced Friction

Reflection

What’s Next

devchallenge #geminireflections #gemini

ai

🖥️ Retro Office PC — CSS Art: Office Culture 🎨

Inspiration

Demo

Journey

What I Learned:

🚀 Final Thoughts

🚀 Hack Club Summer of Making 2025: Code, Create & Win Prizes!

🌟 What is the Summer of Making?

🎁 How Do You Win Prizes?

📍 Real Examples of How to Earn Tickets

🌍 Global Program, Free Shipping!

🧠 Why You Should Join or Share

👉 Join or Refer Now:

A New Era for Node.js Framework: Introducing Express v5

Why Upgrade to Express v5?

Key Features and Improvements in Express v5

1. Full Support for Promises and Async/Await

How to Upgrade to Express v5

Space Invaders - Alien Attack 🌌👾 web game

Space Invaders - Alien Attack 👾🌌

What I Built

Key Features:

Demo

Preview

Journey

What I Learned:

What I'm Proud Of:

What's Next:

summer 2024 june

Inspiration

Demo

Journey

Placeholder Contributor

Intro

Highs and Lows

Growth

Demystifying React Custom Hooks In 2023

Easy waye to make custome Hooks

JavaScript vs. Python: Which Programming Language is Right for You in 2023?

Create React App craete[ Chat web application]

Available Scripts

Deployment server

Crypto Send and receive React web3.O application

Overview of My Submission

Submission Category:

Link to Code

GitHub repository {% https://github.com/omprakash2929/Web3.O_project %}

Additional Resources / Info

visite Demo website {%https://omprakash2929.github.io/Web3.O_project/ %}

Screenshots Website!

UserName:

GitHub repository `{% https://github.com/omprakash2929/Web3.O_project %}`

visite Demo website `{%https://omprakash2929.github.io/Web3.O_project/ %}`