The WiFi Shield V3 adds 802.11b/g/n wireless connectivity to your Arduino via a UART interface. It supports AP + Station dual mode, allowing it to both create its own wireless network and connect to existing routers. Configuration is simple — connect to the module's AP from a phone or tablet and set up via the built-in web interface, with no AT commands required for basic setup.

The shield features dynamic power management with low standby current (~80 μA), making it suitable for battery-powered prototypes. It supports TCP/UDP networking, up to 32 simultaneous clients in TCP Server mode, and common Wi-Fi encryption standards. Designed to the standard Arduino shield form factor, it plugs directly onto Arduino, MEGA, and Romeo boards.

Key Features

• 802.11b/g/n – Support for the latest wireless standards with up to 54 Mbps transfer rate
• AP + Station Dual Mode – Create a network or connect to an existing router
• Web Configuration – Friendly web-based setup page; AT commands also available
• Low Power – Standby ~80 μA, normal mode ~8 mA average, 200 mA peak
• UART Interface – TTL serial to wireless bridge with up to 460800 bps baud rate
• 1 MB Cache – Large buffer for transparent UART/protocol data transmission
• Factory Reset – Hold the Reload pin low for one second to restore defaults
• PCB Antenna – Integrated on-board antenna

Specifications

• Operating Voltage – 5 V
• Frequency – 2.4–2.497 GHz
• Output Power – 16 dBm
• Transmission Rate – 1–54 Mbps
• Range – Up to 150 m
• Protocols – TCP, UDP, ARP, ICMP, HTTP, DNS, DHCP
• Encryption – WEP64/128, WPA-PSK, WPA2-PSK, WAPI (TKIP/AES)
• Modes – TCP Server (up to 32 clients), TCP Client, UDP
• Dimensions – 55 × 53 × 11 mm
• Weight – 40 g

Ideal For

• Adding Wi-Fi to Arduino projects
• IoT prototyping and remote control
• UART-to-wireless bridge applications
• Low-power wireless sensor nodes

Package Contents

• 1× WiFi Shield V3 (PCB Antenna)

Resources

• Product Wiki (DFRobot)
• User Manual (PDF, includes AT commands)