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Topic: Sketch examples of scrolling text on 8x8 LED matrix w/ MAX72xx (Read 19826 times) previous topic - next topic

bratan


I like the idea of using the 8x8 matrix blocks, beats the hell out of hand soldering 128 individual LED's. I might be tempted to do a smaller wordclock using these.


Thanks Riva! :) 
Yeah those 8x8 blocks are super cheap these days. I got 10 of them for $15 on ebay!
Xronos Clock - A talking arduino based alarm clock is now available. Check out xronosclock.com for pictures, source code, schematics, and purchasing info :)

Pedro147

#31
Oct 22, 2012, 10:55 pm Last Edit: Oct 22, 2012, 10:57 pm by Pedro147 Reason: 1
Hi Bratan,

Very impressive for someone who recently said

"Thanks!  Honestly I don't really understand any of it (it's a little too advanced for me at this stage), but I will try! :) I need to read some more about SPI..."

Although I realise that that was specifically in regard to SPI, I wish that I could pick this up as quickly as you seem to have. Hopefully I can look through this code and try to understand how I can eventually write my first scrolling text code.   8)  wish me luck Pedro.
http://www.pedroduino.com

bratan


Hi Bratan,

Very impressive for someone who recently said

"Thanks!  Honestly I don't really understand any of it (it's a little too advanced for me at this stage), but I will try! :) I need to read some more about SPI..."

Although I realise that that was specifically in regard to SPI, I wish that I could pick this up as quickly as you seem to have. Hopefully I can look through this code and try to understand how I can eventually write my first scrolling text code.   8)  wish me luck Pedro.


Yeah I was absolutely clueless when I started, but persistence paid off I just refused to give up.  You have to try and try and try again, until it starts to make sense.  The way I eventually figured it out is that I drew everything on paper, made excel spreadsheet, tracked every iteration of for loops, values of variables, tons of Serial.printl commands.  Try to come up with general plan/algorithm first, describe it in words before you start writing code. I had very little success until I drew all matrix screens and pixels in the spreadsheet, all 16 frames of it and described what is happening. At that point I knew exactly what to do and it compiled and worked almost right away, like magic!  Wish you lots of luck Pedro, and let me know if you have a question!
Xronos Clock - A talking arduino based alarm clock is now available. Check out xronosclock.com for pictures, source code, schematics, and purchasing info :)

Pedro147

If I knew how to give karma points I would certainly send one your way  8) And you may regret your generous offer




  Wish you lots of luck Pedro, and let me know if you have a question!
http://www.pedroduino.com

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