Feather M0 Wi-Fi

Adafruit’s Feather M0 Wi-Fi development board is designed around an Microchip 32-bit ARM Cortex-M0+ processor with an Microchip FCC-certified ATWINC1500 802.11bgn-capable Wi-Fi module with built-in low-power management capabilities, Soft-AP, and SSL, WEP, WPA, and WPA2 encryption support. At the heart of the Feather M0 Wi-Fi is an ATSAMD21G18 processor, clocked at 48 MHz with 3.3 V logic. This chip has 256 KB of Flash and 32 KB of RAM along with native USB. The SWDIO/SWCLK pins are available on the bottom of the Feather board, and, when connected to a CMSIS-DAP debugger, can be used with Atmel Studio for debugging.

With the onboard WINC1500 module, the Feather M0 Wi-Fi board can connect to existing Wi-Fi networks or create its own with Soft AP mode, where it becomes an access point. The Feather M0 Wi-Fi is low power, at about 12 mA for the WINC module when using auto-power management and 10 mA for the ATSAMD21 without using power management; with manual power management the Wi-Fi module can be as low as ~2 mA in sleep mode.

To make the Feather easy to use for portable projects, Adafruit added a connector for a 3.7 V Lithium polymer battery and built-in battery charging; the Feather will automatically switch over to USB power when available. The battery is tied through a divider to an analog pin, allowing measurement and monitoring of the battery voltage to detect when recharging is needed.

Video Adafruit Feather M0 Wi-Fi - ATSAMD21 + ATWINC1500

Features

• Measures 2.1" x 0.9" x 0.3" (53.65 mm x 23 mm x 8 mm) without headers soldered in. Note: It is 0.1" longer than most Adafruit Feathers
• Light as a feather: 6.1 grams
• ATSAMD21G18 at 48 MHz with 3.3 V logic/power
• 256 KB Flash, 32 KB SRAM
• ATWINC1500 802.11 b/g/n module with 802.11 WEP, WPA, and WPA2 Security
• 3.3 V regulator (AP2112K-3.3) with 600 mA peak current output, Wi-Fi can draw 300 mA peak during xmit
• USB native support, comes with USB bootloader and serial port debugging
• 20 GPIO pins
• Six total SERCOMs that each offer hardware Serial, I²C, and SPI support
• Eight PWM pins
• Ten analog inputs
• One analog output
• Built-in 200 mA lipoly charger with charging status indicator LED
• Pin #13 red LED for general purpose blinking
• Power/enable pin
• Four mounting holes
• Reset button