LOLIN(WEMOS) D1 mini Pro
Enhanced D1 Mini with external antenna support - ideal for extended range or enclosure use.
34.2 × 25.6 mm
ESP8266
MCU
160MHz
clock
16MB
flash
~80KB
SRAM
17· 1 ADC
GPIO
Wi-Fi
radio
Pinout
Getting started
flash your first firmware in ~2 minutes1
Connect over USB
Serial chip: CP2104. Not detected? Hold BOOT while plugging in.
2
Flash with your tool
Arduino IDE, PlatformIO, ESPHome or esptool - copy the settings on the right.
3
Verify it runs
The blink example uses GPIO8 - swap for your board's LED pin if different.
Board: Esp8266 Wemos D1minipro
Flash Size: 16 MB · DIO
Upload Speed: 921600
// blink
pinMode(8, OUTPUT);
digitalWrite(8, LOW); // on (often inverted)[env:d1_mini_pro]
platform = espressif32
board = esp32dev
framework = arduino
monitor_speed = 115200
upload_speed = 921600esp32:
board: esp32dev
variant: d1_mini
framework:
type: esp-idf
# blink - GPIO8
output:
- platform: gpio
pin: 8
id: led_out
light:
- platform: binary
name: "LED"
output: led_outesptool.py --chip esp8266 --port /dev/ttyACM0 \
write_flash 0x0 firmware.binSpecifications
ESP8266 · 34.2 × 25.6 mmCompute
MCU
ESP8266
Clock
160 MHz
SRAM · Flash
~80 KB · 16 MB
Radio
Wi-Fi
802.11 b/g/n
Bluetooth
-
Antenna
PCB
I/O
GPIO · ADC
17 · 1
UART · I²C · SPI
2 · 1 · 2
PWM
-
Power
USB
Micro-USB
Serial
CP2104
Boot address
0x0000
Flashing
Upload · OTA
esptool · esp_ota
Flash · Boot mode
DIO · -
Sketch · Data
- · 80 KB
34.2 × 25.6 mm · pin pitch 2.54 mm
The LOLIN(WEMOS) D1 mini Pro uses esptool for firmware uploads, esp_ota for over-the-air (OTA) updates. Flash mode is DIO.
About this board
The WeMos D1 mini Pro (also written as LOLIN D1 mini Pro or Wemos D1 mini Pro) is an upgraded ESP8266 version of the popular D1 mini board with 16 MB of flash. It pairs a built-in ceramic antenna with an external u.FL/IPEX antenna connector, selectable via a small 0-ohm solder jumper, in the compact D1-mini form factor with shield compatibility. It's a good fit for Wi-Fi IoT projects needing better range or more flash. In this guide, you'll find the WeMos D1 mini Pro pinout, datasheet, technical specs, and setup instructions.
Resources
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