Freetronics Forum

Sorry but I can't offer much help here as I have not done much with DMD2. You could try limiting your serial while loop to doing nothing but gathering the input characters and putting them into a buffer and see if that has any effect.

I suspect your sketch is spending too much time in the interrupt updating the DMDs. It will take quite a while to do this with 10 DMDs. Characters will probably be lost during this time.

setLatchChannelOn() is a procedure defined at line 202 in the code provided in the earlier message so it should be available to you as long as you have the case correct case. NOTE the capital 'C' - you show setLatchchannelOn with a lowercase 'c' in your message and that will not work.

I think you can achieve what you are after by using the DMD2 library - have a play with that one. I have not done a lot with that so can't really help with that.
There is no mod to the DMD library that will do it for you as far as I am aware, but it would certainly be possible to do it.

Did you try your setup with the standard unmodified DMD library using some of the supplied examples? If that works, then there is a problem with the changes. If it still does not work there is probably a problem with your sketch or your hardware setup. Are you using a Uno? If you are still having pr...

Not very familiar with the DMD2 library, but doesn't the TextBox allow you set the vertical position? Would that work for you?
You can then read the height of the font and the display then work out where to place the text box.

It is best to rename your modified font to avoid any confusion as well as adding plenty of comments in the file to show what you have done and why - remember that you can never have too many comments. To rename the font you need to do 3 things: (demo here will use "MY_Droid_Sans_12" for the new name...

There is quite a bit of information on how these fonts work on this forum. You might find this thread a helpful starting point.

The Droid_Sans_12 font that you are using only defines characters within the range 32-127 (decimal). I'm not aware of any that do define the full extended character set - they might be out there but they would take up a lot of memory space. Might be best to find another solution. Rather than going t...

Not sure if this helps, but the degree symbol is part of the extended character set (127-255) so may not be available in the font you are using.
And I think the degree symbol is 176 decimal, not 247.
No idea on the brightness issue as I have not yet had a need to play with the OLED display.