SKU: IOWC-1100
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Adafruit Adalogger FeatherWing - RTC & SD Add-on

₹1,469.00 (Inclusive of all taxes)
Out of Stock

The Adalogger FeatherWing is a data-logging add-on board for Adafruit Feather development boards, adding a battery-backed real-time clock (RTC) and microSD card storage via I2C and SPI interfaces for Arduino and CircuitPython projects.

Features

  • Adds battery-backed RTC (PCF8523) and microSD storage to any Feather board.
  • Enables precise time-stamped data logging for IoT sensor nodes and portable devices.
  • Simple plug-and-play connection via Feather stacking headers or female headers.
  • Includes comprehensive tutorial with wiring diagrams and code for Arduino/CircuitPython.
  • Compact form factor designed to match the Feather board footprint.

Out of stock

Description

The Adalogger FeatherWing is a dedicated expansion board designed to augment the capabilities of Adafruit’s Feather ecosystem. It integrates a PCF8523 I2C real-time clock with a 32kHz crystal and a dedicated CR1220 coin cell backup slot, ensuring persistent timekeeping even during main power cycles. Simultaneously, it provides a full-size microSD card socket connected to the host Feather’s SPI bus, creating a complete local data storage solution.

This board is engineered for system integrators and makers building data-logging applications, such as environmental monitors, GPS trackers, or portable sensor nodes. The FeatherWing mechanically and electrically mates directly with any Feather mainboard via stacking headers, preserving all other GPIO and features. The included tutorials provide ready-to-use firmware examples for setting the RTC and writing sensor data to the SD card, significantly reducing development time for embedded logging projects.

Key Features

  • Integrates a precise I2C real-time clock (PCF8523) with battery backup for autonomous timekeeping.
  • Features a full-size microSD card socket for high-capacity, local SPI-based data storage.
  • Designed for seamless mechanical and electrical compatibility with the entire Adafruit Feather board family.
  • Enables creation of standalone, battery-powered data loggers with timestamped records.
  • Supported by extensive Arduino and CircuitPython libraries and example code for rapid prototyping.

Applications

  • Environmental data logging (temperature, humidity, air quality sensors).
  • GPS tracking and location history recording for asset monitoring.
  • Portable sensor nodes and field data collection devices.
  • Energy monitoring systems with timestamped power consumption logs.
  • Any Feather-based project requiring reliable timekeeping and local data storage.

Technical Specifications

Interface/ConnectivityI2C (RTC), SPI (microSD)
RTC ChipPCF8523
Backup PowerCR1220 Coin Cell (not included)
Storage InterfacemicroSD Card Slot (SPI)
CompatibilityAll Adafruit Feather Boards
Dimensions (LxW)50.8 x 22.9 mm
Weight5.1 g

Frequently Asked Questions

How do I connect the Adalogger FeatherWing to my Feather board?

You can connect it using Feather stacking headers soldered to the main board, which allows multiple Wings to stack, or use female headers on the FeatherWing to plug directly onto the male headers of a standalone Feather. Ensure the board orientation aligns the USB port side. No external wiring is needed for the I2C RTC or SPI SD card as they use the Feather's dedicated internal bus lines.

What code libraries are needed to use the RTC and SD card?

For Arduino, install the Adafruit PCF8523 library for the RTC and the standard SD library for the card. For CircuitPython, copy the adafruit_pcf8523.mpy and adafruit_sdcard.mpy library files to your board's lib folder. Adafruit provides complete example sketches and code for initializing the clock, setting the time, and writing data files to the SD card, which can be adapted for your sensor readings.

Does the FeatherWing include the required CR1220 battery and microSD card?

No, the Adalogger FeatherWing does not include the CR1220 coin cell battery for the RTC backup or a microSD card. You must supply these separately. The RTC will function without the battery if you don't need timekeeping during power loss, but for persistent time, a battery is essential. Any standard microSD card (formatted as FAT16/FAT32) is compatible for data storage.

Package Includes

  • 1 x Adalogger FeatherWing Board

Additional Information

Weight 0.0051 kg
Dimensions 5.08 × 2.29 cm