Hacked Gadgets Forum

August 6, 2010

RGB LED Blink Clock

at 5:06 am. Filed under Cool Gadgets, DIY Hacks, Electronic Hacks


Why do we have all of these redundant LED segments in the clocks around us. Just to show one digit of time we use 7 LEDs. If you are looking for a less is more solution to showing the time then you need to have a look at the Blinky Clock that John Boxall created. It is being run from a ATmega328 Microcontroller and a DS1307 Real Time Clock. This isn’t a clock that you can glance at to read the time but wouldn’t it be nice to point to it when your guest ask for the time.

“Using a minimal Arduino bootrom system, a DS1307 real time clock IC and an RGB diffused LED, we can make a clock that blinks the time, using the colours of the LED to note different numerical values. For example, if the time is 12:45, the clock will blink red 12 times, then show blue for a second (think of this as the colon on a digital clock) then blink four times in green (for forty minutes), then blink three times in red for the individual minutes. If there is a zero, blink blue quickly.”