Adafruit Feather M0 900MHz RFM69HCW Packet Radio

Adafruit Feather M0 RFM69HCW Packet Radio is offered as a microcontroller with an RFM69HCW packet radio transceiver. The Feather M0 RFM69HCW Packet Radio features a built-in USB and battery charging. The packet radio also integrates an Adafruit Feather M0 in a 900MHz radio module. Designers can use this 900MHz radio version for either 868MHz or 915MHz transmission and reception.

The design is based on the ATSAMD21G18 ARM Cortex M0 processor, which is clocked at 48MHz and at 3.3V logic. The chip offers 256K of flash and 32K of RAM.

The Feather M0 RFM69HCW Packet Radio supports portable projects. The development board does this by including a connector for Adafruit 3.7V lithium polymer batteries and built-in battery charging.

Features

Feather M0 Features
- Measures 2.0" x 0.9" x 0.28" (51mm x 23mm x 8mm) without headers soldered in
- Weight 5.8 grams
- ATSAMD21G18 @ 48MHz with 3.3V logic/power
- No EEPROM
- 3.3V regulator with 500mA peak current output
- USB native support comes with a USB bootloader and serial port debugging
- 20 GPIO pins
- Hardware Serial, hardware I²C, hardware SPI support
- 8 PWM pins
- 10 analog inputs
- Built-in 100mA lithium polymer battery charger with charging status indicator LED
- Pin #13 red LED for general purpose blinking
- Power/enable pin
- 4 mounting holes
- Reset button

Feather M0 Radio Features
- SX1231 based module with SPI interface
- Packet radio with ready-to-go Arduino libraries
- Uses the license-free ISM band ("European ISM" @ 868MHz or "American ISM" @ 915MHz)
- +13 to +20dBm up to 100mW Power Output Capability (power output selectable in software)
- 50mA (+13dBm) to 150mA (+20dBm) current draw for transmissions
- Range of approx. 350 meters, depending on obstructions, frequency, antenna, and power output
- Create multipoint networks with individual node addresses
- Encrypted packet engine with AES-128
- Simple wire antenna or spot for uFL connector