Adafruit
Adafruit ATWINC1500 WiFi Breakout
The Adafruit ATWINC1500 WiFi Breakout adds 802.11b/g/n WiFi connectivity to your Arduino or other microcontroller project over SPI. Built around the Microchi...
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The Adafruit ATWINC1500 WiFi Breakout adds 802.11b/g/n WiFi connectivity to your Arduino or other microcontroller project over SPI. Built around the Microchip ATWINC1500 module, this FCC-certified breakout delivers reliable wireless networking with TLS 1.2 support for secure connections.
With built-in level shifting and a 3.3V regulator capable of handling 300 mA spikes, this board works with both 3V and 5V logic systems. Three controllable status LEDs provide visual feedback for connection state and data transmission. The onboard PCB antenna means no external antenna is required.
Key Features
- 802.11b/g/n WiFi – Connect to standard wireless networks with fast scanning and connection
- SPI Interface – Up to 12 MHz clock speed for reliable, high-throughput communication
- TLS 1.2 Support – Secure client connections with firmware 19.4.4
- WEP, WPA, and WPA2 Encryption – Compatible with all common network security protocols
- Soft AP Mode – Create ad-hoc networks for direct device-to-device communication
- Level Shifting – All input pins shifted for 3V or 5V logic compatibility
- 3.3V Voltage Regulator – Handles 300 mA spikes, power from 3–5.5 VDC
- 3× Status LEDs – Controllable via SPI or the Arduino library (SSID connected, data transmit)
- Onboard PCB Antenna – No external antenna required
- FCC Certified – Ready for use in finished products
Also Available
- ATWINC1500 WiFi Breakout with uFL Connector – For use with an external antenna
Ideal For
- Adding WiFi to Arduino Zero, Uno, or other microcontroller projects
- IoT devices requiring secure TLS connections
- Wireless data logging and sensor networks
- MQTT-based projects and cloud connectivity
Package Contents
- 1× Adafruit ATWINC1500 WiFi Breakout
- 1× Header strip
Jargon buster
Plain-language definitions for the technical terms used above.
- 3.3V regulator
- A 3.3V regulator is a power circuit that provides a steady 3.3 volts for parts that need that supply voltage. On a breakout board, it can let the sensor run safely even when the connected microcontroller or power source uses a higher voltage.
- breakout
- A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
- 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.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- 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.
- PCB
- A printed circuit board (PCB) is a board, usually rigid, with etched copper tracks that connect electronic components together without loose wiring. Components are mounted on the board and signals route between them through the copper layout.
- PCB antenna
- A PCB antenna is an antenna pattern built directly into the circuit board rather than a separate metal antenna. It matters because placement, nearby metal and enclosure design can affect wireless range.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
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