Adafruit Feather M0 with RFM95 LoRa Radio – 900MHz

Amazon.com Price: $39.44 (as of 27/09/2020 21:15 PST- Details)

SX127x LoRa based module with SPI interface
Packet radio with ready-to-go Arduino libraries
Uses the license-free ISM bands (ITU “Europe” @ 433MHz and ITU “Americas” @ 900MHz)

Description

Feather is the new development board from Adafruit, and like its namesake it is thin, light, and lets you fly! We designed Feather to be a new standard for portable microcontroller cores.

This is the Adafruit Feather M0 RFM95 LoRa Radio (900MHz) – 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. We have other boards in the Feather family, check’em out here.

This is the 900 MHz radio version, which 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. We also sell a 433MHz version of the same radio chipset!

At the Feather M0’s heart is an ATSAMD21G18 ARM Cortex M0 processor, clocked at 48 MHz and at 3.3V logic, the same one used in the new Arduino Zero. This chip has a whopping 256K of FLASH (8x more than the Atmega328 or 32u4) and 32K of RAM (16x as much)! This chip comes with built in USB so it has USB-to-Serial program & debug capability built in with no need for an FTDI-like chip.

To make it easy to use for portable projects, we added a connector for any of our 3.7V Lithium polymer batteries and built in battery charging. You don’t need a battery, it will run just fine straight from the micro USB connector. But, if you do have a battery, you can take it on the go, then plug in the USB to recharge. The Feather will automatically switch over to USB power when its available. We also tied the battery thru a divider to an analog pin, so you can measure and monitor the battery voltage to detect when you need a recharge.
SX127x LoRa based module with SPI interface
Packet radio with ready-to-go Arduino libraries
Uses the license-free ISM bands (ITU “Europe” @ 433MHz and ITU “Americas” @ 900MHz)
+5 to +20 dBm up to 100 mW Power Output Capability (power output selectable in software)
~300uA during full sleep, ~120mA peak during +20dBm transmit, ~40mA during active radio listening.

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