Adafruit Feather M0 with RFM95 LoRa Radio - 900MHz
SX127x LoRa® based module with SPI interface
Packet radio with ready-to-go Arduino libraries
Use license-free ISM bands
+5 to +20 dBm up to 100 mW Power Output Capability (selectable in software)
Simple wire antenna or spot for uFL connector
This is the Adafruit Feather M0 RFM95 LoRa Radio. These RadioFruits, our take on an microcontroller with a "Long Range (LoRa)" packet radio transceiver with built in USB and battery charging. Its an Adafruit Feather M0 with a 900MHz radio module cooked in! Great for making wireless networks that are more flexible than Bluetooth LE and without the high power requirements of WiFi. Feather is the new development board from Adafruit, and like its namesake it is thin, light, and lets you fly! Designed to be a new standard for portable microcontroller cores. This is the 900 MHz radio version can be used for either 868MHz or 915MHz transmission/reception - the exact radio frequency is determined when you load the software since it can be tuned around dynamically.
This chip has a whopping 256K of FLASH (8x more than the Atmega328 or 32u4) and 32K of RAM (16x as much)! It comes with built in USB so no need for an FTDI-like chip. To make it easy to use for portable projects, you don't need a battery, it will run just fine straight from the micro USB connector. If you do have a battery, it will automatically switch over to USB power when its available. The battery is also tied thru a divider to an analog pin to measure & monitor the battery voltage to detect when you need a recharge.
Item Specifics ATSAMD21G18 @ 48MHz with 3.3V logic/power 3.3V regulator with 500mA peak current output USB bootloader and serial port debugging 20 GPIO pins 8 x PWM pin 10 x analog input (1 output) Built in 100mA lipoly charger with status indicator LED Size: 2.0" x 0.9" x 0.3" Weight: 5.6g / 0.2oz