The Feather M0 RFM69HCW Packet Radio (868/915 MHz) combines the ATSAMD21G18 ARM Cortex M0+ processor with an SX1231-based RFM69HCW radio transceiver for wireless data communication at 868 or 915 MHz. The exact radio frequency is software-configurable, allowing you to tune dynamically for your region's ISM band.

The RFM69HCW radio is ideal for small data packet transmission where you need greater range than 2.4 GHz technologies like Bluetooth, Wi-Fi, or ZigBee. With up to 100 mW output power, AES-128 encryption, and multipoint networking support, it suits a wide range of wireless sensor and control applications.

Key Features

• ATSAMD21G18 Processor – ARM Cortex M0+ running at 48 MHz, 3.3V logic
• 256 KB Flash + 32 KB RAM – 8× more flash and 16× more RAM than ATmega328/32u4
• RFM69HCW 868/915 MHz Radio – SX1231-based packet radio with SPI interface, software-tuneable frequency
• +13 to +20 dBm Output – Up to 100 mW transmit power, selectable in software
• ~350 m Range – Depending on obstructions, antenna, and power settings
• AES-128 Encryption – Hardware-accelerated encrypted packet engine
• Multipoint Networking – Individual node addresses for creating wireless networks
• Native USB – Built-in USB-to-Serial for programming and debugging, no FTDI chip needed
• 20 GPIO Pins – Hardware Serial, I2C, and SPI; 8× PWM, 10× analogue inputs, 1× analogue output
• LiPo Battery Support – JST connector with built-in 100 mA charger, battery voltage monitoring via analogue pin
• Compact Design – 51 mm × 23 mm × 8 mm, weighing 5.8 g

Also Available

• Feather M0 RFM69HCW 433 MHz – Same radio at 433 MHz
• Feather M0 RFM95 LoRa 900 MHz – Long-range LoRa radio
• Feather M0 RFM96 LoRa 433 MHz – Long-range LoRa at 433 MHz
• Feather M0 Express – CircuitPython with 2 MB flash
• Feather M0 Basic Proto – Prototyping area
• Feather M0 Adalogger – MicroSD data logging
• Feather M0 Bluefruit LE – Bluetooth Low Energy
• Feather M0 WiFi – ATWINC1500 Wi-Fi

Ideal For

• Wireless sensor networks and remote monitoring
• Battery-powered radio telemetry
• Point-to-point and multipoint data links
• IoT projects requiring sub-GHz range

Package Contents

• 1× Feather M0 RFM69HCW 868/915 MHz
• 1× Header pin set