Page 3 of 4

Re: MAX7219 32x32 LED Display

Posted: Mon May 25, 2026 2:52 pm
by mnfisher
Something awry with v10....

So - I re-exported from v10 and it still crashed - send report bad crash...

I re-exported again and still no joy. So I tried adding another component - first that I tried failed (unable to add) - second (picked at random - grove_humidity_sht31) added okay... Then I could add the display component - and compiles okay. Also runs okay in sim. I could also delete the grove component (although still in the file here)

Martin

Re: MAX7219 32x32 LED Display

Posted: Mon May 25, 2026 3:08 pm
by kaqkk007
The breakthrough has happened—thank you. It's already running in the simulator and compiling to hex.

Re: MAX7219 32x32 LED Display

Posted: Mon May 25, 2026 4:28 pm
by Steve-Matrix
Thanks. I will have a look to see if I can determine why this component is causing a crash.

Re: MAX7219 32x32 LED Display

Posted: Mon May 25, 2026 4:43 pm
by mnfisher
kaqkk007 - phew... Lets us know how you get on!

Steve - thanks, I might have done something odd?

Re: MAX7219 32x32 LED Display

Posted: Mon May 25, 2026 5:58 pm
by kaqkk007
It's already working in the simulation—how can I view and interact with the LUT? Right now, I can only create numbers and individual light points.

Re: MAX7219 32x32 LED Display

Posted: Mon May 25, 2026 6:03 pm
by mnfisher
What would you like to do?

I had a fairly specific need (points and numbers) when I wrote it - but it could be extended fairly easily?

Martin

Re: MAX7219 32x32 LED Display

Posted: Mon May 25, 2026 6:22 pm
by kaqkk007
I've "gotten the hang of it." At first, my goal was just a 4- to 6-digit clock, but if I could edit characters and letters, it could look even more impressive.

Re: MAX7219 32x32 LED Display

Posted: Mon May 25, 2026 6:29 pm
by mnfisher
The LUT contains 16*16bit maps for 0..9. I got AI to draw the characters with limited success :( The LUT could be the extended to include other characters (either text or graphic) if needed (for example set char 10 to be ':' for your clock?) or go the whole way and use ASCII?

Re: MAX7219 32x32 LED Display

Posted: Mon May 25, 2026 6:34 pm
by kaqkk007
As far as I'm concerned, there's no reason why we couldn't use ASCII characters—or even write a LUT—if a "mere mortal" could access it. The only thing missing from our repertoire is the display itself. https://www.youtube.com/channel/UCanvQp ... LOj5nXYJ2Q

Re: MAX7219 32x32 LED Display

Posted: Mon May 25, 2026 7:00 pm
by mnfisher
As another thought - it would be easy to add a DrawChar macro that takes an array of data - so the client program would store it's own data. This could work with 16*16 (as Write) or possibly 8x8?

Martin