Samsung TV Terminal Interface

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  github-page

Inspiration

I was inspired by the 2018 Hawaii false missile alert, where a single interface error sent a state-wide panic message to every phone and TV. It made me curious about how much control software can actually have over hardware. I wanted to see if I could build a tool that could communicate directly with a Smart TV's internal "brain" from a simple terminal command line.

What it does

transforms any terminal into a fully functional command center for Samsung Smart TVs. Instead of fumbling for a physical remote, you can control your entertainment directly from your dev environment.

How we built it

I built the controller using Node.js to send commands over the local network. To make the remote practical, I designed a system that captures a unique string of characters (the authorization key) from the TV during the first handshake. I set the script to save this key into a local file called tv-token.txt. By referencing this file in subsequent runs, the script "remembers" the TV.

Challenges we ran into

The biggest hurdle was the "Allow" popup. Initially, the TV would ask for permission every single time I sent a command, which defeated the purpose of a fast terminal remote. The Solution was to capture and store the session token correctly. Automating this handshake so the script silently refers to tv-token.txt was a major breakthrough, allowing for instant control without needing to touch the physical TV remote at all.

Accomplishments that we're proud of

I’m proud that this runs entirely in a standard Linux terminal (Ubuntu/Mint) using Node.js, making it accessible for developers who want to stay in their workflow while controlling their environment.

What we learned

During this project, I dove deep into Network Protocols and IoT Security. I discovered that Smart TVs use specific hex codes (like 0x0000) to execute functions I learned about AP (Access Point) Isolation, which is a security feature on routers that can prevent devices from talking to each other on the same network. I had to ensure my development environment was configured to allow these packets to move through.

What's next for Samsung TV Terminal Interface

I want to expand the API logic to support other major Smart TV brands (LG, Sony, etc.), turning this into a universal terminal remote.

Integrating my experience with Whisper.cpp to allow voice commands directly through the terminal (e.g., saying "Volume Up" into the mic to trigger the Node.js script).

Mobile Terminal Support: Porting the script to run on Termux so I can control the TV from a smartphone terminal, giving me power over the TV even when I'm away from my laptop.

Building a lightweight React dashboard that displays the current TV status (volume level, active app) in real-time.

Built With

• node.js
• samsung-tv-controll