The maximum input voltage of the ADC0 pin is 0 to 1V if you’re using the ESP8266 bare chip. If you’re using a development board like the ESP8266 12-E NodeMCU kit, the voltage input range is 0 to 3.3V because these boards contain an internal voltage divider. You can learn how t...
Amica (the company that created both V0.9 and V1.0) made this board narrower to fit a breadboard. Moreover, the ESP8266 has also been upgraded from ESP-12 to ESP-12E (a few extra pins). This version uses the Silabs CP2102 as the USB controller. You can download the USB driver for...