Grove – Uart Wifi
Grove – Uart Wifi
Grove – Uart Wifi
The Grove – Uart Wifi is a serial-to-WiFi communication module that enables wireless connectivity for embedded systems and microcontroller projects through a simple UART interface. IoT developers, embedded systems engineers, and electronics hobbyists use this module to add WiFi capabilities to Arduino, Raspberry Pi, and STM32-based projects without complex wireless protocol implementation. It solves the critical challenge of enabling remote data transmission and cloud connectivity for IoT applications while maintaining straightforward serial communication protocols.
Product Overview
The Grove – Uart Wifi module operates as a transparent serial-to-WiFi bridge, converting standard UART data streams into WiFi packets for transmission over 802.11b/g/n networks. The module features an onboard ESP8266 or similar WiFi chipset that handles all WiFi protocol management, allowing developers to focus on application logic rather than low-level wireless stack implementation. The transparent bridge mode enables seamless integration with existing serial-based code, requiring minimal firmware modifications to add WiFi functionality to legacy or new projects.
This module stands out through its plug-and-play Grove connector compatibility, eliminating the need for complex breadboard wiring or soldering. The integrated antenna provides reliable signal strength for typical indoor IoT deployments within 100-meter range. Operating at 3.3V logic levels with built-in voltage regulation, it ensures safe integration with modern microcontroller platforms while consuming minimal power during idle states, making it ideal for battery-powered remote monitoring applications.
Key Specifications
| Specification | Details |
| Product Type | Serial WiFi Module with Grove Connector |
| Brand | Seeed Studio |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| WiFi Standard | 802.11 b/g/n (2.4 GHz) |
| Communication Interface | UART (TTL Serial) |
| Operating Voltage | 3.3V DC |
| Baud Rate | 9600 to 115200 bps configurable |
| Connector Type | Grove 4-pin JST connector |
| Transmission Range | Up to 100 meters (open space) |
Key Features
- Transparent UART-to-WiFi Bridge: Converts serial data directly to WiFi packets without protocol conversion overhead, enabling plug-and-play integration with existing microcontroller code
- Grove Connector Interface: Standardized 4-pin JST connector eliminates soldering requirements and ensures reliable connections with Grove-compatible development boards
- Configurable Baud Rates: Supports 9600 to 115200 bps serial communication, allowing optimization for different microcontroller platforms and data transmission speeds
- Low Power Consumption: Efficient power management with sleep modes for battery-powered IoT applications, consuming less than 50mA during active transmission
- Built-in Antenna: Integrated PCB antenna provides stable 2.4GHz WiFi connectivity without external antenna requirements for typical indoor deployments
- AT Command Support: Full Hayes-compatible AT command set for configuration, WiFi network management, and TCP/UDP socket operations
Applications and Use Cases
- Remote Environmental Monitoring: Deploy temperature, humidity, and air quality sensors in distributed locations with wireless data transmission to cloud platforms like ThingSpeak or AWS IoT Core
- IoT Home Automation: Connect Arduino-based relay controllers, motion sensors, and smart switches to WiFi networks for remote home control via mobile applications
- Industrial Data Logging: Enable legacy serial-based industrial equipment and PLCs to transmit real-time operational data to cloud analytics dashboards without replacing existing hardware
- Wireless Sensor Networks: Build mesh networks of Arduino nodes with WiFi gateways for distributed environmental monitoring in agriculture, smart buildings, and research applications
- Remote Device Management: Create WiFi-enabled firmware update systems and remote configuration interfaces for embedded devices deployed in field locations
How to Use
Begin by connecting the Grove – Uart Wifi module to your microcontroller using the Grove connector, typically to the hardware UART pins (RX/TX) or software serial pins on Arduino boards. Configure the serial communication at your desired baud rate (default 9600 bps) and send AT commands to establish WiFi connectivity. Use commands like AT+CWJAP to join WiFi networks, AT+CIPSTART for TCP socket connections, and AT+CIPSEND for data transmission. The module operates transparently, passing serial data directly to the connected WiFi network once configured.
For Arduino implementations, initialize the SoftwareSerial library pointing to the UART pins connected to the WiFi module, then use standard serial print and read functions to communicate. Reference the comprehensive AT command documentation provided with the module to configure advanced features including static IP assignment, DNS settings, and multiple simultaneous socket connections. Test connectivity using simple serial monitor commands before integrating into your application firmware to ensure proper baud rate matching and antenna signal strength.
Frequently Asked Questions
What is the maximum WiFi transmission range of this module?
The Grove – Uart Wifi module provides reliable connectivity up to 100 meters in open indoor spaces with clear line of sight. Range decreases significantly with obstacles, walls, and interference from other 2.4GHz devices like microwave ovens and Bluetooth speakers. For extended range applications, consider using external WiFi repeaters or mesh networking topologies.
Can this module work with both Arduino and Raspberry Pi?
Yes, the module is compatible with any microcontroller featuring a UART interface. For Arduino boards, connect to hardware UART pins or use SoftwareSerial on digital pins. Raspberry Pi users can connect to GPIO pins configured for serial communication. Ensure proper voltage level matching (3.3V) using level shifters if your microcontroller operates at 5V logic levels.
How do I configure the WiFi network credentials on this module?
Use AT commands via the serial interface to configure WiFi settings. Send AT+CWJAP="SSID","Password" to connect to your WiFi network. The module stores credentials in non-volatile memory, so it automatically reconnects to the last configured network after power cycling. Use AT+CWLAP to scan available networks and AT+CWQAP to disconnect from current networks.
What data transmission protocols does this module support?
The module supports TCP and UDP protocols for socket-based communication. You can establish multiple simultaneous connections (typically up to 5) using AT+CIPSTART commands. It also supports HTTP client functionality for RESTful API integration with cloud platforms, making it suitable for IoT applications requiring cloud data synchronization.
Is external antenna support available for improved range?
The standard Grove – Uart Wifi module includes an integrated PCB antenna optimized for typical indoor deployments. Some variants support external antenna connectors for applications requiring extended range. Contact our support team to confirm antenna options for your specific use case and regional WiFi regulations.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
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- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
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- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
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