ctadlock
Well-known member
I just built a custom Teensy 4.x and its all working great. What I was surprised at is when I ran the first blink sketch I had to compile as Teensy 4.1. What configured this as a 4.1 vs a 4.0? As far as I know its the same bootloader chip for both, so I presume its in the logic of the bootloader chip. Size of the flash memory? Ive read through the original long thread about the custom bootloader and dont see anything in there.
https://forum.pjrc.com/index.php?threads/high-performance-custom-nfc-reader-based-on-teensy-4.76634/