We call these RadioFruits, our take on an microcontroller with packet radio transceiver with built-in USB and battery charging. It’s an Adafruit Feather RP2040 with a RFM69HCW 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.
It’s kinda like we took our RP2040 Feather and RFM69 900MHz breakout board and glued them together. You get all the pins for use on the Feather, the Lipoly battery support, USB C power / data, onboard NeoPixel, 8MB of FLASH for storing code and files, and then with the 8 unused pins, we wired up all the DIO pins on the RFM module. There’s even room left over for a STEMMA QT I2C connector an a uFL connector for connecting larger antennas.
This is the 900 MHz RFM69 packet 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. Despite calling it a ‘packet’ radio (and it does send packets of data) the RFM69 can also be used for non-packetized radio transmission and reception.
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Python for Microcontrollers – Adafruit Daily — Python on Microcontrollers Newsletter: CircuitPython 2025 Wraps, Focus on Using Python, Open Source and More! #CircuitPython #Python #micropython @ThePSF @Raspberry_Pi
EYE on NPI – Adafruit Daily — EYE on NPI Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey
