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ESP8266

ESP8266 D1 Board

Published

Compatible with Arduino

Introduction

1.The ESP8266 D1 Board is an open-source development board based on the ESP-8266 Wi-Fi module. It follows the Arduino UNO board layout and pin-header arrangement,integrates a Micro-USB serial chip and a 5V/1A switching power supply, and lets you write and upload programs directly with the Arduino IDE — a cost-effective choice for getting started with IoT development.

2.The board ships with its hardware and software resources fully open, allowing secondary development. You can use it directly as a Wi-Fi-enabled Arduino board, or build on it by trimming the low-level firmware and expanding peripheral interfaces. It suits IoT education, smart-home prototyping, and wireless data acquisition scenarios.

Specifications

Item	Specification
Core module	ESP-8266 Wi-Fi module
Programming	Arduino IDE (Arduino-compatible)
Digital I/O	11 I/O pins
Analog input	1 ADC channel, 0–3.3 V input range
Wireless upgrade	OTA over-the-air upload supported
On-board power	5V/1A switching power supply (input 5–12 V)
Flash	4 MB
SRAM	32 KB
DRAM	80 KB
Clock frequency	80 MHz / 160 MHz

Hardware

Size

FAQ

Q1: Computer does not recognize the serial port?

A: The CH340 driver is not installed — install it; or the USB cable only supports charging — use a data-capable cable.

Q2: Cannot connect to Wi-Fi?

A: The ESP8266 supports only the 2.4 GHz band; make sure the router has the 2.4 GHz network enabled.

Q3: Board keeps resetting

A: Usually caused by insufficient power. Power the peripherals from a separate supply, or use a USB port with a higher current capacity.

Downloads

Document

ESP8266 D1 Board User Manual v10 EN.pdf

Download

Document

ESP8266 D1 Board User Manual v10 RU.pdf

Download