APR10
Sundial LED clock
Here is a very interesting concept of indoors sundial clock. A sundial is a device that measures time by the position of the Sun. Since indoors we don't get the Sun to cast a proper shadow for these purposes, it can be replaced with, yes, good old LEDs.
This shadow clock can show all three "hands"; hours just like a real sundial clock, minutes and seconds. Each shadow, or hand, is cast from a different light source - a ring, and each ring is of a different color (RGB). So, there are three rings, each having 12 LEDs (36 LEDs in total) and it is all multiplexed and controlled with AVR microcontroller.
There will probably be a kit of this cool clock soon, so check it out!
© Evil Mad Scientist
[ Source: Evil Mad Scientist ]
similar content
- LED display in a business card (08-01-2009) [@News]
- IN-8 single nixie tube clock (26-08-2009) [@Projects]
- Sonar enabled jacket (20-12-2008) [@News]
- Double sided PCB UV LED exposure box (20-04-2009) [@News]
- One-second clock signal source (14-02-2004) [@Schematics/Everything else]
- Voice powered crystal controlled radio transmitter (04-11-2009) [@News]
- LED VU-meter (07-03-2004) [@Schematics/Optics]
- VCR cassette clock (21-03-2009) [@News]
- Dual LED 12V blinker (10-02-2005) [@Schematics/Everything else]
- LED show with PIC (06-04-2004) [@Schematics/Microcontrollers]
add comment
Please log-in!
You can log-in on forum link: Login page. After logging-in, return to this page and click refresh in your browser.