BPI-Webduino smart module for 3.5 dollar easy to buy a sample https://www.aliexpress.com/store/product/BPI-Webduino-smart-home-IOT-development-board/302756_32762020761.html
BPI-Webduino smart module for 3.5 dollar easy to buy a sample https://www.aliexpress.com/store/product/BPI-Webduino-smart-home-IOT-development-board/302756_32762020761.html