I open this issue to report a avrdude warning message when burning optiboot bootloader v8.0 into board UNO R3 (microcontroller Atmega328p) with IDE v1.8.13.
Important: apart of that warning, optiboot bootloader is anyway successfully burned into the controller.
IDE version
Board selection
Warning message
Optiboot v8.0 boards.txt file
Original boards.txt file coming with IDE v1.8.13
0x05
0xFD
Like shown above, the first three bits are the same: BOD threshold 2,7v
I open this issue to report a avrdude warning message when burning optiboot bootloader v8.0 into board UNO R3 (microcontroller Atmega328p) with IDE v1.8.13. Important: apart of that warning, optiboot bootloader is anyway successfully burned into the controller.
IDE version
Board selection
Warning message
Optiboot v8.0 boards.txt file
Original boards.txt file coming with IDE v1.8.13
0x05
0xFD
Like shown above, the first three bits are the same: BOD threshold 2,7v
This could be verified using, for example, AVR fuses calculator https://www.engbedded.com/fusecalc/