These are the Adafruit Feather 32u4 Radio (RFM69HCW) 900MHz and the 433MHz – our take on an microcontroller packet radio transceiver with built in USB and battery charging.

A few years ago, Adafruit launched the Feather 32u4 Basic Proto. This tiny development board featured — as you would expect — an ATMega32u4 microcontroller, a USB port, and a battery ch… ...

Adafruit explains that the new Feather M0 LoRa Radio makes use of the extra space left over to add an RFM9x LoRa 868/915 MHz radio module and although not great for transmitting audio or video ...