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1. WebConfigServerWebConfigServerPublic

   Arduino-ESP C++ library for ESP8266 and ESP32 that creates a web-based configuration server to manage device settings stored in a config.json file on SPIFFS and display real-time data on a dashboard.

   C++ 5 1

2. MQTTClientMQTTClientPublic

   A C++ MQTT client library for ESP32 and ESP8266 that wraps ESP-IDF mqtt client component on ESP32 and PubSubClient on ESP8266.

   C++ 7

3. USBtoUARTUSBtoUARTPublic

   Compact USB-to-UART board (CP2102N) with an LDO (XC6220B331ER) for 3.3V power output

   HTML

4. iot-postboxiot-postboxPublic

   Integrated open-source HW and FW for an IoT smart mailbox sensor with Wi-Fi and LoRaWAN connectivity.

   HTML

5. PowerManagementPowerManagementPublic

   Arduino-ESP32 C++ library to handle power status based on MCP73831/2, TP4054 and TP4065 battery charger ICs

   C++ 1

6. iot-co2Trackeriot-co2TrackerPublic

   A portable IoT CO2 tracker with GPS logging, a real-time LVGL UI, and a full backend solution using MQTT, LoRaWAN, Node-RED, and Grafana

   C