Freetronics Forum

Had a look at ebay? Something like this or this?
Not encapsulated but pretty small. AliExpress might be worth a look as well to see what is available there.

It is all pointing to your display not being compatable with the DMD library. You could try inverting the data line - the others appear to function normally. That could be done in the library in software or just a simple inverter in the physical interface hardware. And you will need the line you del...

It works fine for me except for these: Line 25: dmd.clearScreen( false ); clears the screen to all LEDs ON. I think you mean to have all leds OFF, so it should be: dmd.clearScreen( true ); Line 30: dmd.drawString( 0, 0, newString ,sLength, GRAPHICS_INVERSE); displays the '123' as black on white. Sin...

I Just had some free time so I ran a copy of your sketch supplied in the earlier post. It displays correctly for me, however you need to change line 62 from Serial.println(readString); to Serial.println(myString); to echo your received characters back to the serial monitor, and you are not yet displ...

Did you try the example dmd_demo? Did that work correctly for you?

Did you try the dmd_demo? Did that work correctly for you?
For some reason your setup does not appear to be working as expected. There are 2 options for the graphics mode: GRAPHICS_INVERSE and GRAPHICS_NORMAL - have you tried GRAPHICS_INVERSE?

Convert the variables to a string then append them to your original string.

Once again, if you do not post your sketch, I can only guess at what you are doing. From the download via the link you provided, it appears to be the DMD library. In that download there are several examples which will help you understand how these DMDs work. Try 'dmd_demo' and see how that goes. If ...

Difficult to give an accurate answer without knowing more about your sketch. I will assume you are using the DMD library as you mention 'DMD Lib' and not DMD2. If that is the case, have a look at the format of drawMarquee(): drawMarquee(const char *bChars, byte length, int left, int top, byte fgcolo...

I suspect you will have a trouble achieving your goal with unos. You are correct with the basic limit of 6 DMDs on a single uno, so you would have to set up a master/slave configuration. However I doubt a single uno as master could handle enough slaves. And you would not be able to achieve any accep...