M5Stack RFID2 Unit WS1850S 13.56MHz Sensor Module for Arduino & UIFlow IoT Projects with I2C Interface and 64 Byte Buffer, Includes HY2.0-4P Cable
M5Stack RFID2 Unit WS1850S 13.56MHz Sensor Module for Arduino & UIFlow IoT Projects with I2C Interface and 64 Byte Buffer, Includes HY2.0-4P Cable
M5Stack RFID2 Unit: A 13.56MHz NFC Sensor Module for Arduino and UIFlow IoT Development
The M5Stack RFID2 Unit (model WS1850S) is a purpose-built sensor module that brings 13.56MHz Radio Frequency Identification (RFID) and Near Field Communication (NFC) capabilities to makers and developers. Engineered for the Internet of Things, this compact module enables you to read and write compatible tags, making it a practical component for creating smart access systems, interactive installations, or asset tracking prototypes. Its core strength lies in direct compatibility with popular development ecosystems like Arduino and UIFlow, which support both Blockly and Python programming, allowing for a smooth integration into your existing projects. With a specified reading distance of under 20mm and support for common protocols, it provides a reliable foundation for close-range identification tasks.
Features and Construction
This module is designed with specific technical parameters that define its performance and physical integration. Its construction focuses on delivering core RFID functionality in a form factor suitable for prototyping.
Material and Build
The RFID2 Unit is built around its 13.56MHz operating frequency core, which is compatible with ISO14443A, MIFARE, and NTAG tag protocols. The electronics are housed on a compact board. For connectivity, it features an I2C interface, providing a simple two-wire communication bus to a host microcontroller. This interface supports a fast mode data rate of up to 400 kilobits per second and includes a 64-byte transceiver buffer to manage data packets efficiently. The unit's RF transmitter operates at a power of 4 decibel-milliwatts (dBm). To aid physical construction, the board incorporates two holes designed to be compatible with Lego bricks, allowing for creative and secure mounting in enclosures or models.
Size and Practical Fit
The module's dimensions are given as 7 by 2, a unitless measurement indicating its profile on the M5Stack ecosystem grid. This compact size ensures it can be neatly stacked or housed alongside other M5 units or within custom project cases. The two Lego-compatible holes further enhance its practicality, enabling builders to integrate the electronic module directly into mechanical structures built from standard bricks, bridging the gap between circuit boards and physical builds seamlessly.
Uses and Placement
The module's specifications guide its ideal applications and how it should be deployed within a system. Its use cases range from educational experiments to functional prototypes.
Event or Professional Use
In professional prototyping or event-based interactive setups, the RFID2 Unit can serve as a reliable identification node. Its support for common NFC protocols like ISO14443A makes it suitable for creating secure badge readers for conferences or workshops. The wide operating temperature range, from -20°C to 85°C, allows for deployment in environments with variable thermal conditions, provided the overall system design accounts for this. The long-term data storage capability, cited as over 10 years, ensures that configuration data or user credentials stored on connected tags remain viable for extended periods.
Everyday Home Use
For hobbyists and home automation enthusiasts, this module simplifies adding RFID control to projects. It can be used to create smart locks for cabinets, personalised media controllers activated by specific tags, or inventory systems for collectables. The compatibility with Arduino and the graphical UIFlow platform lowers the barrier to entry, allowing users with different coding skill levels to implement their ideas. The included HY2.0-4P cable provides the necessary link to a controller like an M5StickC, making the initial hardware setup straightforward.
Benefits and Buying Value
The value of this module is grounded in its stated technical attributes and the practical development path it enables, avoiding assumptions about unspecified performance.
Reuse and Low Maintenance
The module is designed for integration into various projects. Its standard I2C interface and protocol support mean the skills and code developed for one application can be adapted to another. The quoted sleep power consumption of 1 microampere indicates a design consideration for battery-powered applications where minimising idle current drain is important for longevity. This, combined with the robust operating temperature range, suggests a component built for repeated use in diverse conditions.
Why Choose This Product
Choosing the M5Stack RFID2 Unit is a decision based on its concrete specifications aligning with project needs. It offers a clearly defined 13.56MHz RFID solution with a stated reading distance under 20mm, a 64-byte data buffer, and direct compatibility with widely-used development tools. For developers working within the M5Stack ecosystem or those seeking a sensor that easily connects to an ESP32-based core, this module provides a supported and documented component. The inclusion of the necessary interface cable in the package ensures you have all the essential parts to begin communication testing immediately.
