Re:How to Debug Your Battery
by pjc50 on Monday July 29, 2024 @05:36AM
(#41099150)
This is a genius idea .. although I wonder how it competes with OCR against the 7-segment display.
[ Parent
| on HN ]
Depends, we managed to OCR all pixels from a standard 128x64pixel OLED. Doing 20 kB/s as a debugging interface was marvelous. Someone smart used the mounting holes on the screen to mount a fixed Finder pattern (the squares in QR Codes), and it was almost fool proof. So Yeah you can easily do seven segment displays now days.
I used Teodora Baluta's Linux Kernel Oops QR code generator as inspiration.
https://www.linuxfoundation.org/blog/blog/opw-intern-develop...
With a QR code you get self describing data streams, ECC, links to manuals.