I like this. Following on from the creative use of LEDs with the Periodic Table, check out this smart shelving system, similarly driven by an Arduino and using LEDs, that serves as a clock. Not a ...

The purpose of a clock is to show the time, obviously. But if you’ve followed Hackaday for some time, you’ll know there are about a million different ways of achieving this. [illusionmanager] added ...

Bad LEDs don’t die. They just fade away and sometimes exceedingly quickly, like this LED nightlight example. Observant reader Clive Mitchell sent in this rather amusing example of a large display LED ...

Most electronic clocks, be they analog or digital, use a crystal oscillator (XO) based on a 32.768 kHz crystal for their reference. In fact, it is same crystal that’s commonly used as a real-time ...

Which digital wall clock is best? Whether you need particularly large numbers, extra information such as temperature or features such as alarms and dimmable backlighting, a wide range of digital wall ...

If you purchase an independently reviewed product or service through a link on our website, Rolling Stone may receive an affiliate commission. If you like waking up the (semi) old-fashioned way with a ...

Like many of you, I have an inexpensive, no-name, large-digit LED clock in my office to keep reminding me of how fast time is passing and how much I still have left to do on any given day. I bought ...