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Topic: any tutorials on this? (Read 3 times) previous topic - next topic

Ruffsta

is there a way to control each led in the matrix individually or a better way to display what we want it to display vs bit patterns?

AWOL

I only said they "might" be better in PROGMEM - I don't know what else you have in mind to do with this device.
If you were going to build some kind of message matrix with multiple devices, it might be better to save RAM for user-specified messages.

However, there is nothing magical about PROGMEM, it is just another memory space on the processor, and there are lots of tutorials and threads on the topic.

"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.

Ruffsta

#17
Jan 25, 2013, 03:15 pm Last Edit: Jan 25, 2013, 03:58 pm by Ruffsta Reason: 1

Never underestimate a 13 year old when it comes to computer technology ...

Did you start wih easier stuff like the LED blinker and reading an analog input? I find it is good to get the basics right and build on that.


yeah, we got tired of making leds blink, so i go on ebay and get random stuff (such as this) and then go from there.. we did a few digit leds, still trying to get the 3 digit and 2 digits to work.. but in time i guess.

we played around with a sensor (4 pin)..

we want to get into multiplexing - building cubes and dancing images.. he wants to build a torrent (or whatever he calls it).. i have a project i am working on with crossroads.

we have a couple of lcd's yet to play with.. but yeah, multiplexing and the such is what we want to accomplish the most,

Ruffsta

#18
Jan 25, 2013, 03:18 pm Last Edit: Jan 25, 2013, 03:23 pm by Ruffsta Reason: 1

I only said they "might" be better in PROGMEM - I don't know what else you have in mind to do with this device.
If you were going to build some kind of message matrix with multiple devices, it might be better to save RAM for user-specified messages.

However, there is nothing magical about PROGMEM, it is just another memory space on the processor, and there are lots of tutorials and threads on the topic.




we just want it to display different things.. .nothing special at this time.. i have more max7219's if ever needed.. i stocked up on those :)

i mean, it's a red dot 8x8 matrix.. nothing we really can use it for or need it for.. was just something to mess and learn with..

Ruffsta

#19
Jan 25, 2013, 03:59 pm Last Edit: Jan 25, 2013, 10:10 pm by Ruffsta Reason: 1
we were inspired such vids:

http://www.youtube.com/watch?v=dVHP7Nhsn4E

http://www.youtube.com/watch?v=mfcpChh9HRk

http://www.youtube.com/watch?v=v56zLOqhjV4
the wiring and soldering doesn't bother me - it's the rest that does..his coding is off tho

http://www.youtube.com/watch?v=IO5Y13S4rsU

http://www.youtube.com/watch?v=Jw3MOZVG60M

http://www.youtube.com/watch?v=GUcX41pokZY

those are crazy! wish we were in that league of arduino! but alas, we are new and dealing with all this simple (yet confusing) stuff for now.

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