> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # Adalogger FeatherWing - RTC + SD Add-on For All Feather Boards **Type:** Product page · **SKU:** ADA2922 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia) **Page:** https://core-electronics.com.au/adalogger-featherwing-rtc-sd-add-on-for-all-feather-boards.html ([markdown](https://core-electronics.com.au/adalogger-featherwing-rtc-sd-add-on-for-all-feather-boards.html.md)) A Feather board without ambition is a Feather board without FeatherWings! This is the Adalogger FeatherWing: it adds both a battery-backed Real Time Clock and micro... ## Pricing - **Price:** $17.75 (inc GST) — $16.14 AUD, exc GST - **Quantity discounts:** 10+ $15.65 (exc GST) · 50+ $15.33 (exc GST) ## Availability & dispatch - In stock, ships same business day if ordered before 2PM (Australia/Sydney). - We can dispatch 2 today, and up to 500 more in 8–12 days. ## Restrictions Restrictions apply to this equipment as it uses button/coin cell batteries: - The equipment is intended to be used in trades, professions or industries - The equipment is not intended for sale to the general public - The equipment is not intended to be used where children are present - You are aware that this equipment may not meet child safety testing requirements as it is not intended to be used by consumers or general public, but rather, is intended to be used in trades, professions or industries in conjunction with the limitations and restrictions listed above - You are aware that these restrictions are due to a change in [A](https://www.accc.gov.au/media-release/businesses-on-notice-as-mandatory-button-battery-laws-commence)[ustralian legislation in 2022](https://www.accc.gov.au/media-release/businesses-on-notice-as-mandatory-button-battery-laws-commence) for button/coin cell batteries ![Button Battery Warning](https://core-electronics.com.au/attachments/uploads/iec-button-battery.png) A declaration of use will need to be submitted during checkout. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=ADA2922:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/ADA2922:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description A Feather board without ambition is a Feather board without FeatherWings! This is the **Adalogger FeatherWing**: it adds both a battery-backed Real Time Clock and micro SD card storage to any Feather main board. Using Adafruit's [Feather Stacking Headers](https://core-electronics.com.au/feather-stacking-headers-12-pin-and-16-pin-female-headers.html) or [Feather Female Headers](https://core-electronics.com.au/feather-header-kit-12-pin-and-16-pin-female-header-set.html) you can connect a FeatherWing on top of your Feather board and let the board take flight! Check out Adafruit's range of Feather boards here. This FeatherWing will make it real easy to add datalogging to any of Adafruit's existing Feathers. You get both an I2C real time clock (PCF8523) with 32KHz crystal and battery backup, and a microSD socket that connects to the SPI port pins (+ extra pin for CS). Tested and works great with any of our Feathers, based on ATmega32u4, ATSAMD21, or ESP8266. Adafruit recommend the Arduino's default SD library to talk to the microSD card socket. On ESP8266, the SD CS pin is on GPIO 15, on Atmel M0 or 32u4 it's on GPIO 10. You can cut the trace to the default pin and change this to any pin. To use the RTC, [use Adafruit's RTClib library](https://github.com/adafruit/RTClib). [If you need a precision RTC, check out Adafruit's DS3231 FeatherWing](https://core-electronics.com.au/ds3231-precision-rtc-featherwing-rtc-add-on-for-feather-boards.html) **Does not come with a micro SD card. A CR1220 coin cell is required to use the RTC battery-backup capabilities!** Adafruit don't include one by default, to make shipping easier for those abroad, [but we do stock them so pick one up or use any CR1220 you have handy](https://core-electronics.com.au/cr1220-replacement-battery-for-icufflinks-inecklace.html). If you're not using the RTC part of the FeatherWing, a battery is not required. [Adafruit's full tutorial has more information including diagrams, example code, pinouts, and more!](https://learn.adafruit.com/adafruit-adalogger-featherwing) ### Technical Details - 50.8mm x 22.9mm x 1.6mm / 2" x 0.9" x 0.06" - Weight: 5.1g - [Datasheets, EagleCAD PCB files, Fritzing objects, and more available in the tutorial](https://learn.adafruit.com/adafruit-adalogger-featherwing/downloads) ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/2/9/2922-01.jpg)