Hi,
I recently bought this 16 x 16 matrix : 16x16 LED Display Module :Elecrow bazaar, Make your making Electronic modules projects easy.
The code that comes with it works, but it is not commented. Im not really sure how to begin changing it when I don't understand how the shift registers are getting their data.
Does anyone know or have a commented version of this code?
Thanks
It helps everyone if you could post URLs as links.
The code at the site has chinese comments, so it is not uncommented. These comments can be translated using any of the online translation tools (eg, Google Translate). I tried a couple and they make sense. The variable names are in English anyway.
Something you can try while you are waiting for someone to respond.
Thanks I already did that, it basically just says the love heart symbol and other stuff. Doesn't explain the code.
You are probably going to have to decipher using the schematic which is linked.
Looks like instead of using 4 MAX7219, they went with two 74HC138 and two 74HC595.
l played a little bit with yhis board and made this turning wheel using <ledMatrixObject.h> library
ino attached
success, Floris
wheel_2_spoke_16x16_dot_led_OK.ino (4.51 KB)
Hi, I too have this 16x16 LED Matrix board that uses 74HC138D and 74HC585D decoder chips.
Mine is the "duinotech" version, but it looks a lot like many of the others with different branding.
I am seeking example code that actually works with either/both Uno R3 or Mega 2560 microcontroller boards.
I and pretty frustrated with this device, having spent several days trying to get it working, but being rewarded only by a blank display showing the occasional few LEDS flashing on/off, and not looking like that example code I acquired. The example code looks like it all came out of the same shop, trying to load up a 2 x 32 bit graphic.
PLEESE (!!) can someone point me at (ie a link) to example code that worked for you and any tips you might impart towards helping me debug this things.
I already discovered that the Male / Female ribbon cable wiring I bought is somewhat suspect, appearing unreliable, to the extent I got some proper pins and soldered my own cable together to eliminate that as a possible cause of the problem. It WAS some of the problem, as the symptoms have now changed, but the thing still is not working and I need help.
brynparrott:
Hi, I too have this 16x16 LED Matrix board that uses 74HC138D and 74HC585D decoder chips.
Mine is the "duinotech" version, but it looks a lot like many of the others with different branding.I am seeking example code that actually works with either/both Uno R3 or Mega 2560 microcontroller boards.
I and pretty frustrated with this device, having spent several days trying to get it working, but being rewarded only by a blank display showing the occasional few LEDS flashing on/off, and not looking like that example code I acquired. The example code looks like it all came out of the same shop, trying to load up a 2 x 32 bit graphic.
PLEESE (!!) can someone point me at (ie a link) to example code that worked for you and any tips you might impart towards helping me debug this things.
I already discovered that the Male / Female ribbon cable wiring I bought is somewhat suspect, appearing unreliable, to the extent I got some proper pins and soldered my own cable together to eliminate that as a possible cause of the problem. It WAS some of the problem, as the symptoms have now changed, but the thing still is not working and I need help.
I see you didn't bother to link to your LED panel.
.