2/22/2024 0 Comments Arduino wire library set timeoutHowever, using a bootloader potentially reduces the production cost of a custom Arduino board if you don't want to rely on separate hardware for programming. The downside is that micronucleus uses 2k of the available flash, leaving us with only 6k of flash for our program! A bootloader like micronucleus allows us to upload firmware to the microcontroller over a "virtual" USB (V-USB) connection rather than using a separate microcontroller for programming. The ATtiny84 and 85 have 8k of flash memory (compared to 32k in the ATmega328p, the most commonly found microcontroller on Arduino platforms). The ATtiny microcontrollers are fantastic little chips but often suffer from low programming space.
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