This IoT use netpie microgear to pass data from NodeMCU to front-end, using UART communication protocol between NodeMCU and stm32 and using I2C commmunication protpcol between stm32 and the sensor.
The data trasmitted from netpie is in Format of "CO2=%d" and timestamp in format of "%a %b %d %H:%i:%s %Y"
เปิดใช้งานโดยเรียกใช้ index.html