Important Note

This entire repo was AI created - including all of the data within. The intent was to A) help me with my personal electronics inventory; and B) see how I could use AI to make that process a bit easier. DO NOT TRUST!

Adafruit Feather 32u4 FONA

Details

• Location: Cabinet-1, Bin 29
• Category: Feather Boards
• Type: ATmega32u4 Development Board with Cellular (Feather Form Factor)
• Microcontroller: ATmega32u4 @ 8MHz with 3.3V logic
• Brand: Adafruit
• Part Number: 3027
• Quantity: 2
• Status: Discontinued
• Product URL: https://www.adafruit.com/product/3027

Description

The Adafruit Feather 32u4 FONA was an all-in-one Arduino-compatible board with cellular connectivity, built-in USB and battery charging. It combined an ATmega32u4 with a FONA800 cellular module (SIM800), making it perfect for IoT projects requiring cellular data, SMS, or voice calls.

Specifications

• Microcontroller: ATmega32u4 @ 8MHz with 3.3V logic/power
• Memory: 32KB Flash, 2KB SRAM, 1KB EEPROM
• Cellular: SIM800 GSM module (Quad-band 850/900/1800/1900MHz)
• GPIO Pins: 20 total
• ADC: 10x analog inputs
• Peripherals: Hardware Serial, I2C, SPI support
• PWM: 7x PWM pins
• USB: Native USB support with bootloader and serial debugging
• Power: 3.3V regulator with 500mA peak current output
• Battery: Built-in 500mA LiPoly charger with status LED

Dimensions

• Board Size: 61mm x 23mm x 7mm (2.4” x 0.9” x 0.28”)
• Weight: 8.2g
• Form Factor: Standard Feather compatible

Image

Features

• Standard Feather form factor compatible with all FeatherWings
• Quad-band GSM cellular connectivity (2G networks)
• Make and receive voice calls with external speaker and microphone
• Send and receive SMS messages
• GPRS data connectivity (TCP/IP, HTTP)
• FM radio receiver capability
• Bluetooth client interface with SPP and audio
• AT command interface with auto-baud detection
• Built-in 500mA LiPoly charger with charging status LED
• Native USB support - can act as keyboard, mouse, MIDI device
• Pin #13 red LED for general purpose blinking
• STEMMA QT connector for easy I2C device connection
• 4 mounting holes and reset button

Cellular Capabilities

• Networks: 2G GSM (T-Mobile recommended in USA)
• Voice: Make/receive calls with external audio components
• SMS: Send and receive text messages
• Data: GPRS TCP/IP and HTTP connectivity
• Radio: FM radio receiver
• Bluetooth: SPP and audio support
• SIM: Requires 2G Mini SIM card

Required Accessories (Not Included)

• 2G Mini SIM Card (T-Mobile or compatible network)
• LiPoly Battery (500mAh or larger required for cellular operation)
• External Antenna (uFL connector)
• Microphone and Speaker (for voice calls)
• MicroUSB Cable (for charging)

Tags

microcontroller, atmega32u4, feather, fona, cellular, 2g, gsm, sim800, battery-charging, adafruit, arduino, discontinued

Notes

DISCONTINUED - This board is no longer manufactured due to the shutdown of 2G networks in many countries. It was designed for cellular IoT projects requiring voice, SMS, and data connectivity. Required a 500mAh+ LiPoly battery for proper cellular operation due to high current spikes. The SIM800 module provided comprehensive cellular functionality but was limited to 2G networks which are being phased out globally.