I have try the instruction on this page:
And I successfully burn the firmware into the MCU ESP8266 and also connect it to the wifi via Wio App.
But the question is :
How do I link the Grove sensors to this MCU, how to connect the pin? Where can I find the spec of the chip and the Wio? And need I make a grove connector myself to connect to the grove sensors?
BTW, the same question appears in this project :
Thanks for reading and hope get the answer soon.