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li_fai

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Reply with quote  #1 
Hi,
 
I have done the MAX7219 arduino example 3 in the following link.
May I know how to control more than eight 8x8 LED matrix display by using another MAX7219?
Also, can I add android phone control the LED matrix display via bluetooth on this project?
I have a HC-06 bluetooth module.
tronixlabs

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Reply with quote  #2 
You can daisy-chain more than one MAX7219, just repeat the circuit and connect data out from the first MAX to data in on the second. 
Yes you could add Android control, you would need to write an app (e.g. with MIT Android App Inventor, it's free) that sends text from the app back to the Arduino via serial over Bluetooth. The Arduino could then send the text to the displays. 
The tronixstuff MAX7219 tutorial be being re-written at the moment to please refrain from questions about the content as it will soon change. 

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li_fai

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Reply with quote  #3 
When will the tronixstuff MAX7219 tutorial re-write complete?
Thanks.
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Reply with quote  #4 
Quote:
Originally Posted by li_fai
When will the tronixstuff MAX7219 tutorial re-write complete?
Thanks.


No ETA, it's a hobby site that gets updated when the owner has spare time. 
Have a look in Instructable, etc.  in the meanwhile. 

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Jayllyn

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Reply with quote  #5 
good evening tonixlabs [smile] , i'm glad to be part of this forum. I just wanna ask something about my MAX7219, ahm can we change the display of LED Dot Matrix with respect to the IR Proximity Sensor (SHARP). I just wanna make a counter and my aim is too input the sensor and display it the LED Dot Matrix. Can u help me? I really need your help [frown] . Is it possible or not ? 
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Reply with quote  #6 
It is possible however you need to make it yourself. You have the information on how to display text and numbers using the MAX7219, so convert the data from the IR sensor and send it to your display. Have a look at:
http://tronixstuff.com/2010/05/14/getting-started-with-arduino-chapter-six/ to see more about the Sharp IR sensor. 

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