New WiFi ESP8266 + 32MB, compatible with nodemcu board. Added an additional 32MB memory size. This is best for large library projects.
On board there is aCH340G usb-ttl serial converter, usb mini plug.
DC 4 ~ 9v 9v PowerIn pin VIN Pitch 2.54mm (0.1 ") Set of 15x2 wire pins.
No soldering.
Combining WiFi access point and feature station + microcontrollers using Lua programming language is simple.