Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards
Origin	-
Microcontroller	ESP8266EX
Operating Voltage	3.3V
Digital I/O Pins	11
Analog Input Pins	1 (Max 1V)
Flash Memory	4 MBytes (32Mbit)
Clock Speed	80 MHz / 160 MHz
WiFi Standard	IEEE 802.11 b/g/n
Dimensions	34.2mm x 17.8mm
USB Interface	Micro USB (CH340G)
Compatibility	Arduino IDE, NodeMCU, MicroPython

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Exceeded expectations

Fast shipping and the board arrived in perfect condition. The soldering quality is top-notch. It works immediately out of the box with NodeMCU firmware.

Anonymous

Mar 26, 2026

Rating: 5/5

Best budget dev board

Amazing price point for what you get. The community support is huge, so finding code examples for sensors and actuators is effortless. Highly recommended for learning.

Anonymous

Mar 06, 2026

Rating: 4/5

Great value, minor pin labeling issue

Works flawlessly with the Arduino IDE. My only complaint is that the silkscreen labeling for the GPIO pins is a bit small to read without a magnifying glass. Otherwise, excellent performance.

Anonymous

Mar 06, 2026

Rating: 5/5

Reliable and compact

I've bought ten of these for our workshop. They are stable, connect quickly to networks, and the built-in USB chip makes programming very convenient compared to bare ESP modules.

Anonymous

Mar 04, 2026

Rating: 5/5

Perfect for IoT beginners

This board is incredibly easy to set up. I had it blinking an LED via WiFi within 15 minutes of unboxing. The form factor is tiny but fits perfectly on a breadboard.

Anonymous

Mar 03, 2026

Rating: 4/5

Solid for home automation projects

Using these to control smart lights around the house. They handle the load well and maintain a stable connection. Just ensure your power supply can handle the current spike during WiFi transmission.

5 FAQ

Q: Is this compatible with the standard Arduino IDE?

A: Absolutely. You just need to add the ESP8266 board manager URL to your preferences and install the ESP8266 package by Hristo Gochkov.

Q: Does it support Over-The-Air (OTA) updates?

A: Yes, the WeMos D1 Mini fully supports OTA updates, allowing you to upload new sketches wirelessly once the initial code is uploaded via USB.

Q: Can this board be powered directly via the 5V pin?

A: Yes, the board includes a voltage regulator that converts 5V from the USB or VIN pin down to the required 3.3V for the ESP8266 chip.

Q: What is the maximum current this board can supply to external sensors?

A: The 3.3V pin can typically supply up to 600mA depending on your USB source, but it is recommended to keep loads under 200mA for stability.

Q: Can I use this with 5V logic sensors?

A: No, the GPIO pins operate at 3.3V logic levels. Connecting them directly to 5V logic sensors may damage the board. Please use a logic level converter.

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