LoRa Mesh Networking with TTGO ESP32 (Firmware Customization

Worked with TTGO LoRa32 (ESP32 + OLED + LoRa) modules originally shipped with Paxcounter firmware.
Flashed both devices with MeshStatic firmware to enable point-to-point LoRa communication.
Configured communication parameters (frequency, spreading factor, bandwidth, etc.) via smartphone interface.
Established successful bidirectional messaging between two mobile phones through the LoRa mesh nodes.
Performed real-world signal stability and performance tests using custom enclosures and USB power.