DOIT Mini Ultra-Small size ESP-M3 Serial WiFi Module Compatible with ESP8266

Looking for Esp-m3? DOIT Mini Ultra-Small size ESP-M3 Serial WiFi Module Compatible with ESP8266 is available at Zbotic with fast shipping across India.

Product Description

• The WiFi module ESP-1 utilizes the high-performance ESP8285 chip. This compact chip integrates an enhanced Tensilica L106 Diamond series 32-bit kernel CPU with SRAM, endowing the ESP8285 with full Wi-Fi functionality. It can operate independently or as a subordinate to another host CPU. As a subordinate, it boots from the onboard Flash.

• The embedded high-speed buffer not only boosts system performance but also optimizes storage management. Moreover, the ESP8285 can serve as a Wi-Fi adapter via SPI/SDIO or I2C/UART interfaces when incorporated into other MCU designs.

Features

• Ultra-small size.
• Support serial to WiFi
• Wireless transparent transmission.
• Long distance transmission with ultra-low power.
• Support outboard antenna.
• Bearing high temperature to 125 ºC, compared to the 85ºC for ESP8266.
• Module size:24.5mm x 14mm.
• Derived from ESP8266, ESP8285 has a flash memory of 1MB
• Totally compatible with ESP8266
• WiFi support 802.11 b/g/n/e/i
• High temperature resistant, working temperature: -40℃-125℃

SOC Characteristics:

• Built-in Tensilica L106 ultra-low power consumption 32-bit CPU,  the main frequency can be 80MHz and
• 160MHz,  also support RTOS;
• Built-in TCP/IP protocol stack;
• Built-in 1 channel 10-bit high precision ADC;
• The outside interfaces have HSPI, UART, I2C, I2S, IR Remote Control, PWM, GPIO;
• The deep-sleep current is about 10uA, and the cut-off current is smaller than 5uA;
• Can be wake-up within 2 ms, and connect to transmit data package;
• the consumer power is smaller than 1.0mW (DTIM3) when at standby status;
• built-in 1M byte for SPI Flash.

Wi-Fi Characteristics:

• Support 802.11 b/g/n/e/i
• Support three modes: Station, SoftAP, and SoftAP+STA;
• Support Wi-Fi Direct(P2P);
• Support hardware acceleration for CCMP (CBC-MAC, computation mode), TKIP (MIC, RC4),
• API(SMS4), WEP(RC4), CRC;
• P2P find, P2P GO mode/GC mode and P2P power management;
• WPA/PA2 PSK and WPS;
• Support 802.11 i  security: pre-certification and TSN;
• Support 802.11n (2.4 GHz);
• 802.1h/RFC1042 frame encapsulation;
• Support seamless roam;
• Support AT remote updation and cloud OTA update;
• Support SmartConfig function for Android and iOS device SmartConfig.

Application:

• Serial Transparent transmission;
• WiFi probe;
• Smart power plug/Smart LED light;
• Mesh networks;
• Sensor networks;
• Wearable electronics;
• Security ID label;
• Wireless location recognition;
• Wireless location system beacon;
• Industrial wireless control.

Package Includes

• 1 x DOIT Mini Ultra-Small size ESP-M3 Serial Wireless WiFi Transmission Module
• 1 x Header Pins

DOIT Mini Ultra-Small size ESP-M3 Serial WiFi Module Overview

The DOIT Mini Ultra-Small size ESP-M3 Serial WiFi Module is a compact wireless communication board based on the ESP8285 chipset, fully compatible with ESP8266 firmware and development tools. Designed for 2.4 GHz Wi-Fi connectivity, it serves as a standalone MCU with built-in Wi-Fi or as a network adapter for other microcontrollers via UART, SPI, SDIO or I²C interfaces.

Key Features of DOIT Mini Ultra-Small size ESP-M3 Serial WiFi Module

• Powered by ESP8285 chip with integrated Tensilica L106 32-bit CPU and 1 MB onboard Flash
• Supports 802.11 b/g/n/e/i Wi-Fi standards at 2.4 GHz
• Operating voltage 3.3 V with wide temperature tolerance (–40 °C to 125 °C)
• Ultra-small footprint ideal for space-constrained projects
• Full compatibility with ESP8266 AT commands and Arduino IDE
• Genuine product with fast shipping from Zbotic across India

Applications and Use Cases

• Standalone IoT sensors and data loggers with cloud connectivity
• Home automation devices such as smart switches, lighting, and thermostats
• Wireless serial bridge for legacy MCU platforms lacking onboard Wi-Fi
• Wearable electronics requiring compact Wi-Fi modules
• Remote monitoring systems for environmental and industrial parameters
• Prototyping networked robotics and telemetry applications

How to Use DOIT Mini Ultra-Small size ESP-M3 Serial WiFi Module

To start, power the module with a stable 3.3 V supply and connect its TX/RX pins to your host MCU or USB-TTL programmer. Install the ESP8266 board package in the Arduino IDE (or use AT command firmware), select the proper COM port, flash your sketch or firmware at 115200 baud, and configure SSID/password for Wi-Fi. Once programmed, the module can function as an independent MCU or bridge network access to an external controller via UART, SPI, SDIO or I²C.

Why Buy from Zbotic?

• Genuine Products: All items sourced from authorized distributors
• Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
• Free Shipping: Free delivery on qualifying orders
• COD Available: Cash on Delivery, UPI, cards, net banking
• Technical Support: Expert help for setup and troubleshooting
• Easy Returns: Hassle-free replacement for defective products

Frequently Asked Questions

What is the flash memory capacity of this module?

The ESP-M3 module uses the ESP8285 chipset, which includes 1 MB of onboard SPI flash memory for firmware and data storage.

Can I use this module with existing ESP8266 sketches?

Yes, the module is fully compatible with ESP8266 firmware, AT commands, and Arduino IDE libraries, allowing seamless code reuse.

How do I interface the module with another microcontroller?

You can connect via UART, SPI, SDIO or I²C. Simply wire the corresponding pins to your host MCU, supply 3.3 V, and use standard AT command or custom firmware to manage Wi-Fi functions.