I have two different ESP32 development boards labelled "ESP32S v1.1 NODEMCU" (A) and "ESP32 DEVKITV1" (B). From what I can tell they have the same major components, but their pins and general layout are quite different. I assume they are both knock-offs.
When uploading from the Arduino IDE, both read the same revision number and features:
Chip is ESP32-D0WDQ6 (revision 1)
Features: WiFi, BT, Dual Core, 240MHz, VRef calibration in efuse, Coding Scheme None
Crystal is 40MHz
From what I can tell NodeMcu has something to do with the firmware for the ESP8266 (wiki)? Also, it seems my ESP32S NodeMcu board doesn't have the standard pin layout for ESP32 boards.
What exactly is this NodeMcu board and what are the differences between the two?