The source she’s used is a Leo Bodnar mini precision GPS reference clock, which includes a low-jitter synthesiser that can be set to the Pi’s 19.2 MHz required clock.

The Raspberry Pi Real Time Clock also comes complete with a 1 x CR1220 12mm Diameter – 3V Lithium Coin Cell Battery. Adafruit explain a little more.

The SHIM RTC expansion board provides the Raspberry Pi mini PC with a real-time clock that is supported by all three Raspberry Pi models A, B and B+ and it does’t use up valuable GPIO headers ...

When [Rodrigo Feliciano] realized that the reason his seven-segment LED wall clock wasn’t working was because the original TG1508D5V5 controller was fried, he had a decision to make. He could… ...

Meant to flag this last week - the Shim RTC. Element 14 has added the real-time clock (RTC) board to its Raspberry Pi add-on line-up, writes Steve Bush. The board is designed to be added to Raspberry ...

The Pi 3 Model B+ also has one full size HDMI port for display output, as well as four USB 2.0 ports, a microSD port for storing data and running the OS, and support for Power over Ethernet (PoE ...

I like this one: a home-school clock that’s powered by a Raspberry Pi with a Pimoroni Inky wHAT display. Basically, it’s a neat way to inform kids studying from home what they should be doing next, to ...