📦 Portability and Efficiency
The Echo Engine Portable is the most compact and economical version of the line. Designed to be discreet and easy to transport, it measures only 24.8 × 14.3 × 3 mm — ideal for environments where space and mobility are essential.
🔋 Autonomy and Energy
- Powered by rechargeable lithium battery
- Compatible with common cell phone chargers
- Up to 72 hours of activity with a single charge
💡 Features
Despite the reduced size, the Portable model maintains the main features of the Echo Engine Basic:
- Local visual feedback
- Storage of the last 24 hours
- Wi-Fi connection: client mode or access point
- Web interface for configuration and monitoring
- Remote update via OTA
🔧 Hardware Used
- Microcontroller: ESP8266 ESP-01
- Low-cost sound sensors
- Lithium battery with protection circuit
🌍 Applications
Ideal for use in educational, residential or urban environments, where sound monitoring needs to be discreet, accessible and reliable.
📊 System Diagram
Visualization of the compact architecture of the Echo Engine Portable:
