QR codes and bin labelling strategy

It turns out the label resolution (203dpi 16mm tall label) determines the minimum height of my gridfinity bins (3U).

Lesson learned: do NOT get a low resolution 203/216 dpi thermal printer. Checks specs and make sure it is minimum 300 dpi.

I first tried to minimize the height to the minimum gridfinity height of 2U (because I like stack my bins to maximize storage), but I discovered that the QR codes generated by bit.ly app when printed that small, my iPhone wouldn't recognize it.

The label resolution is like an old school fax with easily visible stair-stepping.

I originally wanted the higher resolution 300dpi M1 labeller but I couldn't find it. I did tests from my laser printer that allowed me to get recognizable QR codes at 5mm square. Tiny picture images come out horribly as the image of the photo resister label shows.

I use all 4 walls on the inside vertical faces of each bin compartment to get around the labelling space limitations. 16mm is slightly higher than the gridfinity 3U but partition, so I cut it to fit.