LOLIN(WEMOS) D1 R2 & mini

LOLIN(WEMOS) D1 R2 & mini

The Wemos Mini is a small ESP-8266 based wifi board.


11 digital io pins, all pins have interrupt/pwm/I2C/one-wire supported(except D0)

1 analog input(3.2V max input)

a Micro USB connection

Compatible with Arduino and nodemcu

Manufacturer(s) Lolin
Used chip ESP8266EX
Flash 4 (MB)
Total nr of pins 16
Programmable pins 12
Antenna PCB Antenna
Module ESP-12F

Added by

Other contributors (3)

Onno Dirkzwager

2021-01-13 15:33:44
Updated pins_total

Onno Dirkzwager

2021-01-13 15:33:44
Updated pins_prog

Onno Dirkzwager

2021-01-13 15:32:56
Updated text

Used module(s)


ESP8266 is a highly integrated chip designed for the needs of a new connected world. It offers a complete and self-contained Wi-Fi networking solution, allowing it to either host t...

Arduino board settings

Board name:
LOLIN(WEMOS) D1 R2 & mini

Flash size:
  • 4MB (32Mb)

Partition scheme:
  • 4MB (SPIFFS(FS) 2MB OTA:~1019KB)
  • 4MB (SPIFFS(FS) 3MB OTA:~512KB)
  • 4MB (SPIFFS(FS) 1MB OTA:~1019KB)