The Raspberry Pi Pico doesn't have a built-in Real-Time Clock (RTC) with battery backup, which means it loses track of time whenever it's powered off. Enter the DS3231 RTC module - a popular solution ...

Raspberry Pi enthusiasts may be interested in a new open source USB Raspberry Pi RTC offering a MCP2221 USB-I2C Converter, DS3231 High-Precision RTC Chip, TCXO, integrated temperature sensor as well ...

The DS3231 (product website) is a real-time clock (RTC) with integrated crystal oscillator. It also features two 2 alarms and a battery-backup input. There are breakout boards that use this RTC, ...