Pimoroni RV3028 Real-Time Clock (RTC) Breakout

SKU: PIM449 Brand: Pimoroni

An ultra-low-power ( ~100 nA), highly accurate real-time clock breakout. The RV3028 RTC breakout is perfect for adding timekeeping to your project and, thanks to the tiny on-board battery, it'll keep time when your device is powered off. Like all the best timepieces, it's Swiss-made!

$29.30 AUD, inc GST

$26.64 AUD, exc GST

Available with a lead time
Expect dispatch between Nov 29 and Dec 04

Quantity Discounts:

10-25 $25.84 (exc GST)
25+ $25.31 (exc GST)

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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 ustralian legislation in 2022 for button/coin cell batteries

Button Battery Warning

A declaration of use will need to be submitted during checkout.

The RV3028 RTC is factory-calibrated, and is quoted to drift by just ±1 second per million seconds at 25 degrees. This will vary slightly depending on a number of factors. In Pimoroni's testing, they've seen performance better than ±2 seconds per million seconds. For comparison, that's up to five times more accurate than your average digital watch.

The tiny silver oxide battery (8mAh, included) keeps the RTC running when your device (Raspberry Pi or Arduino) is powered off and can sync the time when powered back on. It should last for several years (up to nine in theory, although the battery shelf-life is five years)!

The RV3028 breakout has an I2C interface and is 3.3V or 5V compatible. Like our other Pimoroni breakouts, Pimoroni has designed it so that you can solder a piece of right-angle header onto it and then pop it straight onto the bottom left 5 pins on your Raspberry Pi's GPIO header (pins 1, 3, 5, 6, 9).

It's also compatible with the fancy Breakout Garden, where using breakouts is as easy as just popping it into one of the six slots and starting to grow your project, create, and code.

Features

RV3028 Real-Time Clock (RTC)
Ultra-low-power (~100nA typical current draw)
±1 second drift per million seconds at 25 degrees
Silver oxide battery included (1.55V, 8mAh, 337 type)
3.3V or 5V compatible
I2C interface (address 0x52)
Reverse polarity protection
Raspberry Pi-compatible pinout (pins 1, 3, 5, 7, 9)
Compatible with all 40-pin Raspberry Pi models
Compatible with Arduino
Python library
Datasheet and applications manual

Kit includes

RV3028 RTC Breakout
1x5 male header
1x5 female right angle header

Software
Pimoroni has put together a Python library that you can use with your RV3028 RTC Breakout, and an easy one-line installer to install everything.

Their Python library allows you to set and get the time (year, month, day, hour, minute, second), set periodic countdown timers with interrupts, and to set one-off or recurring alarms with interrupts.

Notes

You'll need to run the set-time.py example the first time that you use your RV3028 RTC breakout to set the time correctly and to enable the clock to run on battery backup!
The battery in this breakout is extremely tiny, so take care not to lose it. Also take care not to contact any metal objects with the breakout to avoid shorting the battery (don't toss it in a box with other breakouts or conductive materials)
Dimensions: 19x19x4mm

This product is listed in:

Other Favourites>Pimoroni>Breakouts>Other

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We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):

$3+ for Stamped Mail (typically 10+ business days, not tracked, only available on selected small items)
$7+ for Standard Post (typically 6+ business days, tracked)
$11+ for Express Post (typically 2+ business days, tracked)
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Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

Some batteries (such as LiPo) can't be shipped by Air. During checkout, Express Post and International Methods will not be an option if you have that type of battery in your shopping cart.

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$12+ for Pack and Track (3+ days, tracked)
$16+ for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount will increase based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia

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