Search found 51 matches

by Aussie_Wombat
Mon Jul 30, 2012 11:47 am
Forum: Dot Matrix Display
Topic: Chained DMDs on low power?
Replies: 5
Views: 5272

Re: Chained DMDs on low power?

Daisy Chain Reply in this post

viewtopic.php?f=26&t=912&p=2510#p2510

Cheers Aussie_Wombat
by Aussie_Wombat
Mon Jul 30, 2012 11:44 am
Forum: Dot Matrix Display
Topic: Chained DMD Addressing?
Replies: 3
Views: 3677

Re: Chained DMD Addressing?

Hi Bwooce,

The layout is as follows
dmd_arduino.jpg
Panel Layout for Multiple DMD's
Of course max numbers are 63 and 47 NOT 64 and 48 as shown in picture....

Regards Aussie_Wombat
by Aussie_Wombat
Mon Jul 30, 2012 3:39 am
Forum: Dot Matrix Display
Topic: Chained DMDs on low power?
Replies: 5
Views: 5272

Re: Chained DMDs on low power?

Thanks Simon. I forgot about that. I have 6 dmd's at home, in a 2x3 configuration. I will check out the daisy chain plan when I get home. As for the idc cable connection. The red stripe on the edge generally denotes the side which pin 1 is on. The block on the idc plug denotes the side that pin one ...
by Aussie_Wombat
Sun Jul 29, 2012 12:29 am
Forum: Dot Matrix Display
Topic: Chained DMDs on low power?
Replies: 5
Views: 5272

Re: Chained DMDs on low power?

The usb will only power one dmd. To power 2 or more you need an external power supply. 5V 4A should suffice...
by Aussie_Wombat
Mon Jul 16, 2012 11:58 am
Forum: Dot Matrix Display
Topic: Need help with a project
Replies: 5
Views: 5328

Re: Need help with a project

Stripesace, That code I mentioned for the Maximite.. I added in the functionality you said about... here is a short 6 mb video.. http://members.iinet.net.au/~dpwyatt/videos/Maximite3x8.avi and a picture of the maximite. Maximite_new.jpg The MMBasic program was 6 Kb....most of that is the code for us...
by Aussie_Wombat
Mon Jul 16, 2012 7:01 am
Forum: Dot Matrix Display
Topic: Need help with a project
Replies: 5
Views: 5328

Re: Need help with a project

Stripesace, Here is the code I made for the testing. It just cycles the number every second. I am sure you could modify it to suit your needs. It does not matter whether you have the displays 3 wide x 1 down or 1 wide x 3 down. The code just seems to slow down.. to every 1/2 second , it draws 1 pixe...
by Aussie_Wombat
Mon Jul 16, 2012 12:33 am
Forum: Dot Matrix Display
Topic: Need help with a project
Replies: 5
Views: 5328

Re: Need help with a project

Stripesace I quickly wrote some code, to display the numbers on their side, by using the dmd.drawFilledBox() function. I found it drew ok to 2 panels, but when I set it to 3 panels it drew the numbers very slowly. 1 pixel per second. I haven't had a chance to investigate further, but maybe jon could...
by Aussie_Wombat
Sun Jul 15, 2012 2:27 am
Forum: Dot Matrix Display
Topic: Need help with a project
Replies: 5
Views: 5328

Re: Need help with a project

Hello Stripesace, Parts list: 3 DMD's of course 1 Freetronics eleven (no network ) or etherten (network) or arduino clone 1 wall powerpack 5V 4A for the 3 dmd's. join all 3 to powerpack 1 wall powerpack 9V 1A for the arduino clone (unless powered by usb from computer) an enclosure to mount it all in...
by Aussie_Wombat
Thu Jun 21, 2012 8:37 pm
Forum: Dot Matrix Display
Topic: DMD & etherten message board
Replies: 4
Views: 4947

Re: DMD & etherten message board

mjwillia In your Code you set the dmd panels ... //Fire up the DMD library as dmd #define DISPLAYS_ACROSS 1 #define DISPLAYS_DOWN 1 DMD dmd(DISPLAYS_ACROSS, DISPLAYS_DOWN); Here you have set it to only one panel.. You need to change the number to .... #define DISPLAYS_ACROSS 2 // Two panels across.....
by Aussie_Wombat
Thu Jun 21, 2012 9:19 am
Forum: Dot Matrix Display
Topic: DMD & etherten message board
Replies: 4
Views: 4947

Re: DMD & etherten message board

Hi mjwillia, Are you using an external power supply to power the etherten, or a usb cable? Sometimes the wiznet chip which controls the ethernet on the etherten, drops the ip if the power level gets to low.. Usually using an external power supply on the etherten will fix this. The dmd, etherten and ...