Attributes

Brand	-
Category	Electronic Components / Maker DIY / Development Boards & Control Boards
Origin	-
Microcontroller	ESP8266EX
Flash Memory	4MB (32Mbit)
Operating Voltage	3.3V
Input Voltage	5V via Micro USB
Digital I/O Pins	17 Pins
Analog Input Pins	1 Pin (A0)
Wi-Fi Standard	802.11 b/g/n (2.4 GHz)
CPU Clock Speed	80MHz / 160MHz
USB Interface	Micro USB (CH340G)
Board Dimensions	58mm x 31mm x 13mm

5 reviews

Anonymous

Mar 16, 2026

Rating: 5/5

Reliable for smart home projects

Using these for my light switches. Stable connection and easy to program.

Anonymous

Mar 08, 2026

Rating: 5/5

Perfect for IoT starters

Great board for learning IoT. Connected to Wi-Fi instantly using Arduino IDE.

Anonymous

Mar 03, 2026

Rating: 5/5

Excellent for university projects

Bought for my final year project. Documentation online is plentiful.

Anonymous

Feb 17, 2026

Rating: 4/5

Good value but needs patience

Works well once configured. Driver installation took some time on Windows 10.

Anonymous

Jan 22, 2026

Rating: 4/5

Solid hardware

Pinout is standard. Wish it had more analog pins but otherwise great.

5 FAQ

Q: Is this compatible with the Arduino IDE?

A: Yes, you can program it using the Arduino IDE with the ESP8266 board manager.

Q: Can I power it with a 3.3V regulator directly?

A: Yes, you can supply 3.3V to the 3.3V pin, but ensure stable power supply to avoid resets.

Q: Are the header pins pre-soldered?

A: This version typically comes with unsoldered headers unless specified otherwise in the variant selection.

Q: What is the maximum current per GPIO pin?

A: The maximum current per GPIO pin is approximately 12mA. Please do not exceed this to avoid damage.

Q: Does this board support MQTT protocol?

A: Yes, the ESP8266 supports MQTT libraries widely used for IoT communication.

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