Feather is the new development board from Adafruit, and like its namesake it is thin, light, and lets you fly! Adafruit designed Feather to be a new standard for portable microcontroller cores.
This is the Adafruit Feather 32u4 Radio (RFM69HCW) 433MHz - Adafruit's take on an microcontroller packet radio transceiver with built in USB and battery charging. Its an Adafruit Feather 32u4 with a 433 MHz radio module cooked in! Great for making wireless networks that can go further than 2.4GHz 802.15.4 and similar, are more flexible than Bluetooth LE and without the high power requirements of WiFi. Adafruit have other boards in the Feather family, check'em out here.
This is the 433 MHz frequency module version. They also sell a 900MHz version which can be used for either 868MHz or 915MHz transmission/reception. If you want much longer range, check out the LoRa 433MHz Feather
At the Feather 32u4's heart is at ATmega32u4 clocked at 8 MHz and at 3.3V logic, a chip setup Adafruit have had tons of experience with as it's the same as the Flora. This chip has 32K of flash and 2K of RAM, with built in USB so not only does it have a USB-to-Serial program & debug capability built in with no need for an FTDI-like chip, it can also act like a mouse, keyboard, USB MIDI device, etc.
To make it easy to use for portable projects, Adafruit added a connector for any of Adafruit's 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. They 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.
Here's some handy specs! Like all Feather 32u4's you get:
- Measures 2.0" x 0.9" x 0.28" (51mm x 23mm x 8mm) without headers soldered in
- Light as a (large?) feather - 5.5 grams
- ATmega32u4 @ 8MHz with 3.3V logic/power
- 3.3V regulator with 500mA peak current output
- USB native support, comes with USB bootloader and serial port debugging
- You also get tons of pins - 20 GPIO pins
- Hardware Serial, hardware I2C, hardware SPI support
- 8 x PWM pins
- 10 x analog inputs
- Built in 100mA lipoly charger with charging status indicator LED
- Pin #13 red LED for general purpose blinking
- Power/enable pin
- 4 mounting holes
- Reset button
This Feather 32u4 Radio uses the extra space left over to add a RFM69HCW 433 MHz radio module:
- SX1231 based module with SPI interface
- Packet radio with ready-to-go library
- Uses the amateur or license-free ISM band (ITU "Europe" license-free ISM or ITU "American" amateur with limitations)
- +13 to +20 dBm up to 100 mW Power Output Capability (selectable in software)
- Range of approx. 350 meters, depending on obstructions, frequency, antenna and power output
- Create multipoint networks with individual node addresses
- Encrypted packet engine with AES-128
- Simple wire antenna or spot for uFL connector
Comes fully assembled and tested, with a USB bootloader that lets you quickly use it with the Arduino IDE. They also toss in some headers so you can solder it in and plug into a solderless breadboard. You will need to cut and solder on a small piece of wire (any solid or stranded core is fine) in order to create your antenna. Lipoly battery and USB cable not included but we do have lots of options in the shop if you'd like!
- 51mm x 23mm x 8mm / 2.0" x 0.9" x 0.28"
- Weight: 5.5g
- EagleCAD PCB files, Fritzing objects, datasheets and more in the tutorial!
This product is listed in:
Documentation and Resources:
- Boards of a Feather
Have you ever used an Arduino board, and wanted to hook it straight up to a JST connected LiPo battery but knew it wouldn’t work? Or maybe you wanted a microcontroller with built-in wireless capabilities? Well, Adafruit has developed their fam...
- CircuitPython vs MicroPython: Key Differences
Have you ever wanted to program your microcontrollers with Python instead of Arduino? MicroPython and CircuitPython bring the ease of Python to microcontrollers by adding hardware support! In MicroPython, Python is largely unchanged other than the ad...
- The Maker Revolution
The Maker Revolution celebrates the creation of new devices and the modification of existing ones - the transition from a consumer buying goods to eventually having a major part in their creation. The Maker Revolution places strong emphasis on free (...
- Wi-Fly with Feather Boards
I’ll level with you; the idea of microcontrollers and wireless networks was a little daunting to me initially. How on earth was I going to connect and control it with Wi-Fi?! But when I eventually I waded into the world of networking microcontr...
- Wings of the Feather
The Feather boards are the brains of your project, we took a closer look at the different models in our Birds of Feather article, check that out first (especially if you have no idea what the difference is between a feather and a wing). You can plug ...
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