Freetronics Forum

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.

Have you considered accessing the CAN bus directly? The information you need is obviously available there if the tacho is driven that way. There are plenty of resources available to help you with access and this might be a tidier solution. Asking for both hardware and software design for your basic ...

Scrolling speed is determined by how often you step the marquee. If you are using the original DMD library this is done by dmd.stepMarquee(), or for DMD2 it is dmd.marqueeScrollX(), which you execute within a timed loop. So all you need to do is adjust the timing of the loop to alter scrolling speed.

The SPI interface requires the 3 lines: - PIN_DMD_CLK - PIN_DMD_SCLK - PIN_DMD_R_DATA There is plenty of resources available which explain how this interface works. The DMD is arranged in 4 blocks and the 2 lines: - PIN_DMD_A - PIN_DMD_B are used to select which 1 of the 4 is currently active. And f...

Have a look at this topic . There is a file attached to one post called "MyBigFont.h". Have a look at that file. It should help explain how these fonts work. There are comments added throughout as well as a description of how it is built at the end of the file. This might help you to construct your ...

Scrolling with multiple displays does not perform very well the way the DMD2 library currently works at the moment. It is a result of the way it works, not the actual scrolling function. I would suggest you use the original DMD library. It certainly lacks some of the features of the DMD2 library, bu...