{"product_id":"adafruit-ds3231-precision-rtc-breakout","title":"Adafruit DS3231 Precision RTC Breakout","description":"\u003cp\u003eThe datasheet for the \u003cstrong\u003eDS3231\u003c\/strong\u003e explains that this part is an \"Extremely Accurate I²C-Integrated RTC\/TCXO\/Crystal\". And, hey, it does exactly what it says on the tin! This \u003cstrong\u003eReal Time Clock (RTC) \u003c\/strong\u003eis the most precise you can get in a small, low power package.\u003c\/p\u003e\n\u003cp\u003eMost RTCs use an external 32kHz timing crystal that is used to keep time with low current draw. And that's all well and good, but those crystals have slight drift, particularly when the temperature changes (the temperature changes the oscillation frequency very very very slightly but it does add up!) This RTC is in a beefy package because the crystal is inside the chip! And right next to the integrated crystal is a temperature sensor. That sensor compensates for the frequency changes by adding or removing clock ticks so that the timekeeping stays on schedule.\u003c\/p\u003e\n\u003cp\u003eThis is the finest RTC you can get, and now we have it in a compact, breadboard-friendly breakout. With a coin cell plugged into the back, you can get years of precision timekeeping, even when main power is lost. Great for datalogging and clocks, or anything where you need to really know the time.\u003c\/p\u003e\n\u003cp\u003eComes as a fully assembled and tested breakout plus a small piece of header. You can solder header in to plug it into a breadboard, or solder wires directly.\u003c\/p\u003e\n\u003cp\u003eA coin cell is required to use the battery-backup capabilities! We don't include one by default, to make shipping easier for those abroad, but you can use any CR1220 you have handy!\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/learn.adafruit.com\/adafruit-ds3231-precision-rtc-breakout\/\" target=\"_blank\"\u003eCheck out Adafruits detailed tutorial for pinouts, assembly, wiring \u0026amp; testing, and more!\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003eTECHNICAL DETAILS\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eRevision History:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAs of January 19, 2023\u003c\/strong\u003e – Adafruit have updated this PCB with \u003ca href=\"https:\/\/github.com\/adafruit\/Adafruit_Pinguin\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eAdafruit Pinguin\u003c\/a\u003e to make a lovely and legible silkscreen - you may get the new PCB or the older version with vector fonts - both are identical other than the fancy silkscreen.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e23mm x 17.6mm x 7.2mm \/ 0.9\" x 0.7\" x 0.28\"\u003c\/li\u003e\n\u003cli\u003eWeight: 2.1g\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/learn.adafruit.com\/adafruit-ds3231-precision-rtc-breakout\/downloads\" target=\"_blank\"\u003eDatasheet, schematic, EagleCAD PCB files, and Fritzing available in the product tutorial\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":16610898055,"sku":"ADA3013","price":17.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0174\/1800\/products\/3013-09.jpg?v=1676370896","url":"https:\/\/shop.pimoroni.com\/en-eu\/products\/adafruit-ds3231-precision-rtc-breakout","provider":"Pimoroni Ltd","version":"1.0","type":"link"}