A
Anonymous
Feb 15, 2026
Rating: 3/5
Pin labeling could be better
The silkscreen is a bit small. Had to check the wiki to confirm GPIO numbers.
Description
ESP8266 Serial WiFi Module V3, IoT Development Board with CH-340
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Development Boards & Control Boards |
| Origin | - |
| Microcontroller | ESP8266EX |
| USB-to-Serial Chip | CH340G |
| Flash Memory | 4 MByte |
| CPU Frequency | 80 MHz / 160 MHz |
| WiFi Standard | IEEE 802.11 b/g/n |
| Logic Level | 3.3V |
| Input Voltage | 5V DC via Micro USB |
| Digital I/O Pins | 17 Pins |
| Analog Input | 1 Pin (0-1V range) |
| Board Size | 58mm x 31mm x 13mm |
5 reviews
A
Anonymous
Feb 15, 2026
Rating: 4/5
Good board, install drivers
Make sure you download the CH340 drivers before plugging it in. Otherwise works great.
A
Anonymous
Feb 07, 2026
Rating: 5/5
Great value for money
Bought a pack of three. All functioning correctly. Fast shipping too.
A
Anonymous
Feb 01, 2026
Rating: 5/5
Excellent for Home Automation
Works perfectly with Home Assistant. The CH340 chip is recognized immediately on Windows 10.
A
Anonymous
Jan 28, 2026
Rating: 5/5
Stable WiFi Connection
Been running a temperature sensor for a month without disconnects. Very stable.
5 FAQ
Q: Can I power this via the VIN pin?
A: Yes, you can supply 5V via VIN, but using the Micro USB port is recommended for stability.
Q: Is this compatible with the Arduino IDE?
A: Yes, you can program this board using the Arduino IDE by installing the ESP8266 board package.
Q: Does it support MicroPython?
A: Yes, the ESP8266 chip is fully compatible with MicroPython firmware.
Q: Is the antenna internal or external?
A: This version features a PCB onboard antenna. No external connector is available.
Q: What voltage should I use for the GPIO pins?
A: The GPIO pins are 3.3V logic. Connecting 5V directly may damage the board.
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