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 ]

Sunčani sat sa LEDicama Link Comments (1)

site friends

• 
• Bittele Electronics

sponsored links

ads

• NodeThirtyThree
• Svijet Igra
• 
• 
• Stomatološka ordinacija Tuzla
• Micromatic.hr
• 
• Dobar majstor
•