The goal was to create a multi-device communication and audio playback system controlled from a mobile application, where several units can “play a dialogue” by reproducing preloaded audio in a defined sequence.

We designed a 4-layer PCB with WiFi + Bluetooth, enabling automatic communication between devices and scenario-based playback.

Audio assets are stored locally (SD-card / memory) and can be played in the required order across multiple devices.

The system also integrates a cloud/server layer for management.