08/05/2026
Recently we worked on a pretty unusual project for our employer Cofinity-X
🎯 We had to develop a demo booth for an exhibition: four tablets mounted on one structure, all working together. No internet — just a local network.
Here’s how it was supposed to work 👇
A visitor interacts with any of the four tablets — say, taps a button or fills out a form. That would then trigger a chain of events on the other devices: pop-ups appear, animations play, notifications show up. At the same time, LEDs built into the booth light up 💡
⚙️ How we solved it:
· Set up a local server on a Raspberry Pi
· Tablets communicate over HTTP
· LEDs are controlled by an Arduino
· Simple flow: screen → server → controller → LED
The employer had their own person handling the PC–Arduino connection 🔌
Our job was to:
· figure out how everything should work together
· pick the right libraries
· put together clear docs — specifically, what commands our server sends to the Arduino, so their guy could configure the LEDs
Result
We assembled the booth, tested it, and handed it over ✅ The employer accepted it with zero issues. You can see the booth in action in the gallery.