Official ESP32 client for DTG IoT Hub (MQTT, Modbus RTU, no-code I/O, FOTA).
Wi-Fi and cellular MQTT client with a Let's Encrypt trust store (ISRG Root X1/X2, Root YR/YE), Hub downlink, no-code GPIO, Modbus RTU, and checksum-verified HTTPS OTA. Install PubSubClient, ArduinoJson, and TinyGPSPlus from Library Manager. For Modbus sketches also install eModbus from GitHub (eModbus/eModbus).
| Filename | Release Date | File Size |
|---|---|---|
| DTG_IoT-1.1.1.zip | 2026-10-30 | 131.74 KiB |