Someone used their Raspberry Pi to create the perfect desk companion for CS2 players, a physical kill counter
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Forget Razer’s new AI companion – this creative Counter-Strike 2 player has built a physical kill counter that sits on a desk and updates in real time using a Raspberry Pi. You don’t even have to rely on on-screen overlays or constantly check the scoreboard, as this setup displays live match stats on a small LED panel, giving players instant feedback while playing.
The project was shared by a Reddit user who built the device using a Raspberry Pi Pico paired with a Pimoroni Galactic Unicorn LED matrix. The result is a compact hardware display that acts like a real-world HUD for Counter-Strike 2, sitting directly under the monitor.
Raspberry Pi kill counter for Counter-Strike 2
What makes this project stand out is how the data is collected. The creator is not modifying the game or reading memory in any way. Instead, the system uses Valve’s Game State Integration (GSI), which is an official feature that allows games to share match data externally. That data is sent to a Python script, which then communicates with the LED matrix over USB to update the display instantly. This keeps the setup clean and avoids any cheating concerns.
The kill counter updates the moment a kill is registered in-game. Beyond that, the creator added several visual effects tied to different events. When the player earns an MVP, the display triggers a gold confetti-style animation. When a map loads, the entire panel flashes bright white, mimicking the effect of a flashbang. While sitting in the lobby, the display loops an animated AK-47 spray pattern, keeping the screen active even outside matches.
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The device runs entirely as an external accessory and does not interfere with gameplay. It simply reacts to game data and visualizes it in a fun, physical way. For players interested in building one themselves, the creator has open-sourced the entire project. The code, hardware list, and setup instructions are available on GitHub, making it easy for others to recreate or expand on the idea.
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