Boardoza ESP01M Wi-Fi Module
Overview
The Boardoza ESP01M is a highly integrated, compact Wi-Fi SoC (System on Chip) solution driven by the high-performance ESP8266 core architecture. Engineered for robust IoT (Internet of Things) deployments, this module incorporates a full TCP/IP protocol stack and a high-efficiency 2.4 GHz transceiver, enabling seamless network bridging for embedded microcontrollers.
Designed with an ultra-small 18mm x 18mm footprint, the ESP01M minimizes PCB real estate requirements while offering flexible "Station" and "SoftAP" modes. It serves as a critical communication node for smart home automation, industrial telemetry, and low-power sensor networks.
Core Technical Specifications
The module is characterized by the following operational parameters:
Core Architecture: Built upon the Tensilica L106 32-bit RISC processor, optimized for ultra-low power consumption and high-speed data processing.
Operating Voltage: Supports a wide input range of 3.3V to 5V DC, facilitating direct integration with diverse logic levels.
Wireless Standard: Compliant with IEEE 802.11 b/g/n protocols, operating strictly in the 2.4 GHz frequency band.
Data Throughput: Capable of achieving physical layer (PHY) rates up to 72.2 Mbps in 802.11n mode.
Communication Interface: primarily utilizes a high-speed UART (Universal Asynchronous Receiver-Transmitter) bus with a default baud rate of 74880 bps for boot logs and command interfacing.
Thermal Endurance: Engineered to withstand harsh industrial environments ranging from -40°C to +85°C.
Physical Dimensions: A compact square form factor measuring 20 mm x 20 mm.
Key Engineering Features
Advanced Networking Modes
The ESP01M supports a versatile range of network topologies:
Station Mode (STA): Allows the module to connect to an existing Wi-Fi router as a client.
SoftAP Mode: Enables the module to act as a wireless access point for other devices.
Promiscuous Mode: Facilitates low-level packet sniffing for network analysis and security applications.
Virtual Wi-Fi Interfaces: Supports up to two simultaneous virtual Wi-Fi interfaces for complex routing scenarios.
Robust UART Integration
The module is designed as a serial-to-Wi-Fi bridge. By utilizing standard TX/RX lines, it allows any microcontroller with a UART port to offload the heavy lifting of TCP/IP processing, significantly reducing the computational load on the host MCU.
Hardware Interface and Signal Mapping
The Boardoza ESP01M exposes a simplified 6-pin header interface designed for rapid prototyping and reliable connectivity:
Power Terminals
5V Pin: The positive power supply input, accepting a regulated voltage between 3.3V and 5V.
GND Pin: The common ground reference for both power and logic signals.
Communication Bus
TX Pin: UART Transmit line. Used to send data from the ESP01M to the host controller.
RX Pin: UART Receive line. Used to receive commands and data from the host controller.
Control Logic
RST Pin: External hardware reset input. Driving this pin low triggers a hard reset of the SoC.
IO0 (GPIO0): A multi-functional pin used for boot mode selection. Pulling this pin LOW during power-up places the module into UART Download Mode (Flash Mode) for firmware updates.
Mechanical Specifications
The module features a square 20 mm x 20 mm PCB outline. Mounting is typically achieved via standard 2.54mm pitch headers, making it compatible with breadboards and industry-standard sockets.
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