Adafruit Feather 32u4 RFM96 LoRa Radio

Adafruit Feather 32u4 RFM96 LoRa Radio is a microcontroller with a Long Range (LoRa) packet radio transceiver and built-in USB and battery charging. The microcontroller packet radio transceiver integrates Adafruit Feather 32u4 in a 433MHz radio module. The 32u4 RFM96 LoRa Radio supports wireless networks that extend past 2.4GHz 802.15.4. The device is also more flexible than BLUETOOTH® LE and without the high-power requirements of WiFi.

The design is based on the ATmega32u4 processor, clocked at 8MHz and at 3.3V logic. The chip offers 32K of flash and 2K of RAM. The built-in USB provides a USB-to-Serial program and debug capability. To support portable projects, the development board includes a connector for Adafruit 3.7V lithium polymer batteries and built-in battery charging.

Features

Measures 2.0" x 0.9" x 0.28" (51mm x 23mm x 8mm) without headers soldered in
Weight 5.5 grams
ATmega32u4 @ 8MHz with 3.3V logic/power
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 lipoly charger with charging status indicator LED
Pin #13 red LED for general purpose blinking
Power/enable pin
4 mounting holes
Reset button

Feather 32u4 Radio Features
- SX1276 LoRa® 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)
- +5 to +20dBm up to 100mW Power Output Capability (power output selectable in software)
- ~300uA during full sleep, ~120mA peak during +20dBm transmit, ~40mA during active radio listening.
- Simple wire antenna or spot for uFL connector