Tindie Blog | Foxie CardClock v2

The new and improved version of the CardClock is not only stuffed with more LEDs, but it now has a gorgeous swappable wooden front plate. The circular LED array on the left shows time in a traditional analog clock style, and the right-hand 223 RGB LED array shows the time digitally with all sorts of crazy patterns and colours!

Not only is it roughly the size of a credit card, meaning it can be used just about anywhere, but it’s powered by USB using the included 90-degree USB cable. This makes a nice and neat appearance (though it’d be cool to have the option of having the cable exit rearward instead for an even cleaner look) and makes running the clock easy.

It’s powered by an ESP32 which synchronizes the clock to NTP servers every three hours when connected to Wi-Fi. It updates an on-board RTC which keeps the time if internet isn’t available, and it has a supercapacitor to keep the time if you need to unplug the clock and move it.

If you’re looking for a great gift for a hacker friend or just want a super cool, small digital clock on your desk/bench, the CardClock v2 will definitely turn heads and get you some serious nerd cred! Check the video below for a demo.