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Topic: MatrixClock: an 8x8 LED matrix and no buttons (Read 4869 times) previous topic - next topic

kiwimew

This is a clock I made as a gift for my sister.

Matrix Clock - 3:50 by funnypolynomial, on Flickr


Matrix Clock - Side by funnypolynomial, on Flickr

The main challenge was to create a practical time display on the 8x8 LED matrix.  The outer LEDs are used to show the minutes (to the nearest 5) and I designed a 4x4 pixel "font" to show the hour on the inner LEDs.  Here's the time display in demo (sped up) mode:
http://www.youtube.com/watch?v=niVspPjHHfI

The unit has additional display modes: the time in words, the temperature, a "Matrix" style animation and random pseudo-words (taken from my Loquino project http://www.flickr.com/photos/funnypolynomial/sets/72157629076673753/).  The display mode is selected by changing the orientation of the unit, determined by an accelerometer.  From the standard position (displaying the time as above) tipping the unit over to the left shows the Matrix animation, to the right shows the temperature.  Turning it upside down shows the time in words.
http://www.youtube.com/watch?v=1O97MwmAgRw

The unit has no buttons.  The time is set by changing the orientation.  For example tipping the unit face up, rotating it anti-clockwise and then lying it flat puts it into hour setting mode.  The hour automatically increments.  The current hour is set by rotating the unit back to the standard position.  Repeating the process sets the minutes.
http://www.youtube.com/watch?v=rj8n6pWyV-0

The unit includes a light sensor to dim the LEDs when the ambient light dips below a threshold.  The alternate brightness and ambient threshold are set as above, but with a clockwise rotation.

I also spent a fair bit of time creating a semi-cryptic wordless instruction sheet.  Just diagrams and icons, drawn using PostScript code in an isometric projection:

Matrix Clock - Instructions by funnypolynomial, on Flickr

There are more photos, videos and details on flickr:http://www.flickr.com/photos/funnypolynomial/sets/72157631025316814/
The sketch is available from my site:http://www.funnypolynomial.com/software/arduino/matrixclock.html
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CrossRoads

Nice work! That's pretty clever all around.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

brandNothing


Jack Christensen

Way cool, very clever! Is the box bamboo?
MCP79411/12 RTC ... "One Million Ohms" ATtiny kit ... available at http://www.tindie.com/stores/JChristensen/


Pedro147

#5
Aug 28, 2012, 10:02 pm Last Edit: Sep 13, 2012, 11:01 pm by Pedro147 Reason: 1
You Kiwi's are way too clever, no wonder us Aussies want to claim all the good stuff you blokes come up with  8)   Very well done.
http://www.pedroduino.com

kiwimew

@Jack: yeah bamboo - a toothbrush holder  :)
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Jack Christensen


@Jack: yeah bamboo - a toothbrush holder  :)


Haha, another clever point for you. Bamboo is cool.
MCP79411/12 RTC ... "One Million Ohms" ATtiny kit ... available at http://www.tindie.com/stores/JChristensen/

johnft

As always - well done. Your projects are an inspiration!
http://www.freetronics.com

JO3RI

Ok√©, this is cool, real cool. It even has less buttons than an iPhone  :D
http://www.JO3RI.be

Nederlandstalige sectie - http://arduino.cc/forum/index.php/board,77.0.html -

meanpc

Fantastic job on the clock.  You had to do quite a bit of engineering on the display and the interface.  Your sister had to be stunned by this clock.  I really like the IDE cable!
http://www.meanpc.com


DuaneB

Hi,
   I have added a link to this project here -

http://rcarduino.blogspot.com/p/great-projects.html

I will of course remove it, if you prefer

Duane B

rcarduino.blogspot.com
Read this
http://rcarduino.blogspot.com/2012/04/servo-problems-with-arduino-part-1.html
then watch this
http://rcarduino.blogspot.com/2012/04/servo-problems-part-2-demonstration.html

Rcarduino.blogspot.com

kiwimew

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