Adafruit Feather M0 with RFM69HCW Packet Radio - 868/915MHz 9703 use a logic level converter

use a logic level converter when connecting to 5 V systems

This chip can do both

Module Power Supply Volume control Best for PAM8403 (this) 2×3W 5V Yes (built-in pot) USB/battery speakers TPA2012 2×2

non-contact RF card

Flashlight and Mic

Adafruit Feather M0 with RFM69HCW Packet Radio - 868/915MHz 9703 use a logic level converterThis is the Adafruit Feather M0 RFM69 Packet Radio (868 or 915 MHz). We call these RadioFruits, our take on a microcontroller with an RFM69HCW packet radio transceiver plus built in USB and battery charging. It's an Adafruit Feather M0 with a 900MHz radio module cooked in! 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