Heart & Industry

Home · Electronic components · Pimoroni

Adafruit PCF8523 Real Time Clock (RTC) Breakout Board

Adafruit PCF8523 Real Time Clock (RTC) Breakout Board

Pimoroni

£4.25

Price read from Pimoroni on 2026-10-22. Check before buying.

This is a great battery-backed real time clock (RTC) that allows your microcontroller project to keep track of time even if it is reprogrammed, or if the power is lost. Perfect for data-logging, clock-building, time stamping, timers, and alarms, etc. Equipped with PCF8523 RTC - it can run from 3.3V or 5V power logic! Adafruit have had a breakout board version of this RTC for a while, but they want to make it even easier for folks to use, so now it comes with STEMMA QT connectors for plug-and-play simplicity. Works great with an Arduino using the RTC library , with CircuitPython , or with a Ras

Pimoroni's own words, read from their page.

Buy from PimoroniPrice seen 2026-10-22. Not an affiliate link, we earn nothing from it.

Where this comes from

The part other shops don't tell you. Three separate questions, kept separate on purpose, each with its source.