DEV Community: Manas Sahu

CrossHID

Manas Sahu — Tue, 11 Aug 2026 15:18:38 +0000

CrossHID: Turn Your Laptop Into a Bluetooth HID Bridge for iPad

Have you ever wanted to use your laptop's mouse with your iPad without buying another Bluetooth mouse?

That was the idea behind CrossHID.

CrossHID is a Bluetooth HID bridge that lets your laptop act as a Bluetooth input peripheral for your iPad.

It supports both mouse and keyboard input, allowing your existing laptop setup to interact with your iPad over Bluetooth.

No extra mouse.
No extra keyboard.
Just your laptop and iPad.

What is CrossHID?

At its core, CrossHID takes input from your laptop and exposes it to the iPad as a Bluetooth HID device.

The basic flow looks like this:

Laptop mouse / keyboard → CrossHID → Bluetooth HID → iPad

From the iPad's perspective, CrossHID behaves like a normal Bluetooth input device.

This makes it possible to use the input hardware you already have instead of carrying another peripheral around.

Why did I build it?

I wanted a simple way to use my laptop's mouse with my iPad.

The obvious solution would be to get another Bluetooth mouse and keep it around for the iPad.

But that felt unnecessary.

The laptop already had a perfectly good mouse and keyboard connected to it.

So I started wondering:

What if the laptop itself could act as the Bluetooth peripheral?

That question eventually turned into CrossHID.

Mouse first, keyboard too

The primary use case for CrossHID is mouse input.

You can connect your iPad to CrossHID and use your laptop's mouse as the iPad's Bluetooth mouse.

Keyboard input is supported as well, so the same bridge can handle both major desktop input devices.

That means your setup can effectively become:

Laptop → CrossHID → iPad**

with your existing mouse and keyboard available to the iPad.

How it works

CrossHID sits between the laptop's input system and the iPad's Bluetooth connection.

It captures input events from the laptop, converts them into HID reports, and sends those reports to the iPad through a Bluetooth HID connection.

The iPad doesn't need a special CrossHID app to interpret those inputs.

It simply sees a Bluetooth HID peripheral.

That's what makes the project interesting to me: the laptop isn't just sending data to an iPad application — it is presenting itself as an input device.

Platform support

Right now, CrossHID is only available for Linux.

A Windows version is currently in the works and will be released soon.

What CrossHID supports

Currently, CrossHID supports:

🖱️ Mouse input
⌨️ Keyboard input
📡 Bluetooth HID connectivity with iPad

The goal isn't to replace dedicated peripherals.

It's to make the hardware you already have a little more useful.

Where to try it

CrossHID is not hosted on GitHub.

You can find and try it here:
crosshid.noblelex.in

Who is this for?

CrossHID can be useful if you:

Keep your iPad next to your laptop
Don't want to carry a second mouse
Want to use your existing keyboard with your iPad
Work between a laptop and iPad regularly
Like experimenting with Bluetooth and HID
Just want to try something a little different 😭

It's a relatively simple idea, but it can be surprisingly convenient once everything is connected.

The project is ready

CrossHID is now finished and ready to be used.

I'm releasing it because I don't want it to remain another project that only exists on my machine.

If you have a setup where CrossHID could be useful, give it a try.

Try it here: crosshid.noblelex.in

If you run into a bug, find something that doesn't work correctly, or have an idea for improving it, feel free to reach out through the site.

What's next?

For now, I'm mainly interested in seeing people actually use CrossHID.

There are plenty of things that could potentially be improved — better device handling, more input support, broader platform support, and a more polished experience.

But I'd rather let real usage determine what comes next.

Maybe CrossHID stays a small utility.

Maybe it grows into something more.

We'll see.

Final thoughts

CrossHID started from a pretty simple question:

"Can my laptop pretend to be a Bluetooth input device for my iPad?"

The answer turned out to be yes.

So I built it.

Now I'm putting it out there for anyone else who wants to try it.

If you find it useful, I'd love to hear about it. ❤️

Happy hacking! 🚀

NobleLex

Manas Sahu — Tue, 04 Aug 2026 17:08:21 +0000

I Built an AI Legal Assistant at 16 — Here's What I Learned

Over the past few months, I've been building NobleLex, an AI-powered legal assistant focused on Indian law.

The idea started with a simple question:

Can legal research become faster without sacrificing clarity?

That question led me into building features like:

AI-powered judgment analysis
Legal research assistance
Conversation sharing
Structured legal summaries
Citation support
A clean interface designed for long legal documents

The journey wasn't smooth.

I rewrote parts of the frontend, experimented with different AI models, redesigned the user experience multiple times, dealt with deployment issues, rate limits, and countless bugs that only appeared in production.

One thing I learned quickly is that building the product is only half the challenge.

The harder part is making something people genuinely find useful.

I've spent a lot of time improving the little details—making summaries clearer, reducing friction in the interface, and thinking carefully about how AI should assist rather than overwhelm users.

As a student, balancing school with development has also taught me consistency. Even small improvements made every day add up over time.

I'm now at the stage where I'm looking for honest feedback from developers, law students, and legal professionals.

If you've built products before, I'd love to hear:

What's the biggest lesson you've learned while building?
How did you get your first real users?
What would you improve in an AI tool for legal research?

Building in public has already taught me more than any tutorial ever could, and I'm excited to keep improving NobleLex based on real user feedback.

If you'd like to try it or share feedback, you can check it out here:
👉 https://noblelex.in

For any suggestions, feedback, or collaboration, feel free to reach out:
📧 support@noblelex.in

Thanks for reading!

Introducing NobleLex — AI for Legal Understanding ⚖️

Manas Sahu — Fri, 12 Jun 2026 15:28:23 +0000

NobleLex is an AI-powered legal assistant built to make legal documents easier to read, understand, and work with.
Legal judgments and documents are often long, complex, and time-consuming to go through. NobleLex is designed to simplify that process and help users focus on what actually matters.
It currently includes 8+ features to assist with legal research, analysis, and understanding.
You can open the website and explore everything in detail.
The goal is simple — reduce the time it takes to understand legal information without losing accuracy or depth.
We’re actively building and improving the platform, especially around legal research, document handling, and smarter AI-driven analysis.
If you’re into law, legal tech, or AI applications in real-world systems, this is what we’re building.

You can check out the website at https://noblelex.in

From IPC to BNS: I built a web tool to simplify India’s new criminal laws

Manas Sahu — Wed, 25 Mar 2026 15:36:01 +0000

🧠 I Built a Tool to Convert IPC Sections to BNS Instantly

With the shift from the Indian Penal Code (IPC) to the Bharatiya Nyaya Sanhita (BNS) in 2024, I noticed something:

👉 It’s actually confusing to track how sections have changed.
👉 There’s no quick way to understand mappings or transitions.

So I decided to build something simple.

🚀 What I Built

I created a web tool that helps you:

Convert IPC sections to their corresponding BNS sections
Understand how the structure has changed
Quickly access different chapters and mappings

The goal was to make it fast, simple, and useful—especially for students and anyone exploring the new legal system.

💻 Tech Stack

I kept the stack simple and focused:

Frontend: HTML
Backend: Python
Framework: Flask
Deployment: Vercel

The backend handles the mapping logic, while the frontend keeps things clean and easy to navigate.

🎯 Why This Matters

This tool can be useful for:

Law students trying to understand the transition
People preparing for exams
Anyone curious about how IPC maps to BNS

Instead of going through multiple sources, you get a quick and structured answer in one place.

🔗 Try It Out

You can check it out here:
👉 https://ipc-to-bns-mauve.vercel.app/