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...
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 this board at this link. NodeMCU V3 Pinout This is a version invented by Lolin with a CH340G USB...
The most widely used ESP8266 boards are the ESP-01, ESP8266-12E NodeMCU Kit, and the Wemos D1 Mini. For a comparison of these board, you can read this guide: ESP8266 Wi-Fi Development Boards comparison. ESP8266-01 Pinout If you’re using an ESP8266-01 board, you can use the follo...