ESPWatch with weather forecasting, based on MQTT

We just designed an ESPwatch with weather forecasting, with MQTT and Openweathermap.
It based on the ESP12 and 12864 OLED, get the real time from MQTT, and 3~5 days weather forecasting, depends on the city you lived.

Although the whole product is not difficult, but i think it useful for the learner to learn the basic hardware and coding, about IOT. i have post the detailed step-by-step guide at:ESPwatch guide

The most difficult for the learners is the Arduino IDE library installing..wish the very detailed guide helpful. All the hardware& software are open source at:ESPwatch open-source hardware&software