Have an ESP8266 development board such as the NodeMCU or Wemos D1 ... You’ll need a USB OTG cable to get your ESP board jacked in to your Android device, but you don’t need root or even ...

I am referring to the ESP8266 and this product is a marrige of ... ll find the common pinout for a USB-to-serial programming cable. Above you can see the programming cable Adafruit sent me with ...