Strage aspect behavior

I have two similar 64x32 panel, drived by ESP32, with the same behavior: one of the 32x32 part works perfectly, but the other “stretch” the display horizontally, like here:

I dont know it is a failure on panel, or software problem?


This looks like a panel problem. The way I would verify this is

  1. use another driver for that panel (not smartmatrix) and see if it has the same problem
  2. use another panel with your existing smartmatrix code to see if that one displays ok.
    Yes, this is crude debugging, but it should work.