| ▲ | hturan 7 days ago | |
I might be wrong, but you might need need (at least) a 23x23 LED matrix to have a white border around the outside to give it the contrast needed (the "quiet zone", since QR data is black). | ||
| ▲ | phirks 7 days ago | parent [-] | |
This is why my first prototype had a white border around it. The LEDs were red back then, so I don't know exactly what I was thinking, but I was aware of the problem. https://github.com/Nicholas-L-Johnson/flip-card/blob/main/me... | ||
