DFRobot
Gravity: WiFi IoT Module
This WiFi IoT module would be an excellent choice for IoT classroom teaching and smart home projects. It supports multiple programming platforms, such as Mak...
This WiFi IoT module would be an excellent choice for IoT classroom teaching and smart home projects. It supports multiple programming platforms, such as MakeCode, Mind+, and Arduino IDE, and can also be used on various popular IoT platforms like Easy IoT, IFFTTT, ThingSpeak, SIoT. Besides that, the module is designed with easy-to-use Gravity interface and employs UART and I2C communication protocols. You can use it to build IoT projects with other mainboards like micro:bit, Arduino, STM32, etc.

Board Overview
FEATURES
- Support Arduino IDE programming, MakeCode and Mind+ Graphical Programming
- I2C and UART Communication
- Support Maincontroller Arduino, micro:bit, etc.
- Support protocols like MQTT, HTTP, etc. Work well with IoT platforms EasyIoT, IFTTT, ThingSpeak, etc.
- PH2.0-4P Gravity Interface
SPECIFICATION
- Power Supply: 3.3V~5.5 V
- Communication: I2C, UART
- Wireless Mode: IEEE802.11b/g/n
- Encryption Type: WPA WPA2/WPA2–PSK
- WiFi Frequency: 2.4GHz
- Built-in Protocol: TCP/IP Protocol Stack
- Dimension: 37×32mm/1.46×1.26”
- Supported IoT Platforms: Easy IoT, IFFTTT, ThingSpeak, SIoT
- Supported Programming Platforms: Arduino IDE, MakeCode, Mind+
DOCUMENTS
- Product Wiki
SHIPPING LIST
- Gravity: WIFI IoT Module ×1
Jargon buster
Plain-language definitions for the technical terms used above.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- IDE
- Short for Integrated Development Environment, a program used to write, run and manage code. It matters because some learners prefer a traditional coding workspace instead of a guided notebook-style lesson.
- IoT
- Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
- MQTT
- A lightweight messaging protocol often used for IoT devices to publish and receive data through a server called a broker. It matters for home automation and sensor networks because it is simple, efficient, and widely supported.
- SIoT
- SIoT is a local Internet of Things server system used to collect and share data between connected devices, often using MQTT messaging. It matters when choosing a learning kit because it lets a classroom or project network store and exchange device data without relying entirely on cloud services.
- STM32
- STM32 is a family of microcontroller chips commonly used in embedded electronics. Knowing a product uses an STM32 can help when looking at firmware updates, pin connections, or low-level serial control options.
- UART
- UART is a simple serial connection that sends data over separate transmit and receive wires, often labelled TX and RX. It matters because this module is designed to replace a wired UART cable with a wireless link while keeping the same serial data format.
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Brands
Connectivity
Supplier page — dfrobot.com
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