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Topic: Cheap LED Matrix (Read 2 times) previous topic - next topic

coco3431

I am new to the forum and I want to make a clock with and arduino and an led matrix. I wanted to make the following and change the code:
http://makeprojects.com/Project/PS-2-You+LED+Sign/1069/1#.UOhbMG8bSSo
but it seems that Sure Electronics dosent sell the led matrix anymore. I looked at adafruit.com and came across the following:
https://www.adafruit.com/products/872
but it is more expensive and it is small for a wall clock. Can anyone assist me in what I need or where I can get one of these cheaply.

Grumpy_Mike


coco3431


Is this one big enough for you?
http://www.evilmadscientist.com/2007/led-matrix-displays/


This would be great, perfect size and reasonable price. My only question is how many pins would I need to control this matrix and could I use some kind of a chip to decrease the pins needed without much work.

CrossRoads

Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

coco3431


The MAX6953 can control 4 of those 5x7 displays using just 2 IO pins, SCL & SDA

http://www.maximintegrated.com/datasheet/index.mvp/id/3291?ver=F&utm_expid=50713806-2&utm_referrer=http%3A%2F%2Fwww.maximintegrated.com%2Fpst%2Frun.mvp%3Fq%3Dmax6953%26image.x%3D19%26image.y%3D12



Is there anything cheaper? Maybe it could only control one display would be ok. I cant really imagine spending $25 on a chip that ill probably solder wrong and it does not really look like it would go in a breadboard.

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