NTP sync, no RTC required, compatible with all timezone.
Found RATP trains hours.
Connect to wifi via web captive portal.
ESP8266 for Arduino IDE
- Redgick_MatrixMAX72XX.h: https://github.com/redgick/Redgick_GFX from project https://lenuage.io/
- ESPNtpClient.h: https://github.com/gmag11/ESPNtpClient/
- WiFiManager.h: https://github.com/tzapu/WiFiManager
- asyncHTTPrequest.h: https://github.com/boblemaire/asyncHTTPrequest and https://github.com/me-no-dev/ESPAsyncTCP
- ArduinoJson.h: https://github.com/bblanchon/ArduinoJson