Attributes

Brand	-
Category	Electronic Components / Maker DIY / Development Boards & Control Boards
Origin	-
Microcontroller	ESP8266EX
Flash Memory	4MB
WiFi Standard	802.11 b/g/n
Operating Voltage	3.3V
Input Voltage	5V via Micro USB
Digital I/O Pins	11
Analog Input Pins	1 (A0)
Board Dimensions	34mm x 17mm
Programming Interface	Micro USB
Software Compatibility	Arduino IDE, MicroPython, Lua

5 reviews

Anonymous

Apr 10, 2026

Rating: 5/5

Perfect for IoT projects

This board works flawlessly with the Arduino IDE. WiFi connectivity is stable and the dual-side pin layout makes breadboarding much easier.

Anonymous

Apr 06, 2026

Rating: 4/5

Good value but small

Great little board for the price. Just be careful with the voltage levels as it is 3.3V logic. Otherwise, it performs well.

Anonymous

Mar 10, 2026

Rating: 4/5

Fast setup

Uploaded the first sketch within minutes. Documentation could be slightly better, but community support is huge.

Anonymous

Feb 23, 2026

Rating: 5/5

Fits breadboard perfectly

The form factor is exactly what I needed. It sits snugly on the breadboard without blocking adjacent rows.

Anonymous

Feb 17, 2026

Rating: 5/5

Reliable WiFi connection

I used this for a home automation sensor. The signal strength is surprisingly good for such a compact board.

5 FAQ

Q: Can I program this using Python?

A: Yes, this board supports MicroPython firmware which allows you to program it using Python.

Q: Is this board compatible with 5V logic sensors?

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

Q: What is the maximum current per GPIO pin?

A: We recommend drawing no more than 12mA per GPIO pin to ensure stability and longevity of the chip.

Q: Does it fit on a standard half-size breadboard?

A: Yes, the dimensions are designed to fit comfortably on standard half-size and full-size breadboards.

Q: Does it have an external antenna connector?

A: No, this model uses an onboard PCB antenna. It does not have a connector for an external antenna.

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