Atmega328P + ESP8266 – UNO + Wi-Fi – compatible with Arduino

This module is like the baby of an Arduino UNO and a Wemos D1. It combines a full integration of an Atmel ATmega328 and the ESP8266 WiFi chip with 32 MB flash memory and USB-TTL converter CH340G. All sections can work together or independently – selected by a row of piano switches.

Specifications:
Microcontroller: ATmega328
Wi-Fi MCU: ESP8266
USB-TTL converter: CH340G
Power Out: 5V-800mA
Power IN USB: 5V (500mA max.)
Power IN Vin/DC Jack: 9-24V
Power Consumption: 5V – 800mA (max.)
Logic Level (external): 5V
WIFI: Wi-Fi 802.11 b/g/n 2.4 GHz
USB: Micro USB
Digital I/O: 14Pin
Analog I/O: 6Pin
ESP3288 external memory size: 32Mb
Antenna: Built-in
Operating temperature: −40С°/+125С°
Dimensions: 53.34×68.58mm

Jumper settings:

Documentation:
Dimensional drawings
Pinout
Schematic
CH340 USB driver