Since the ATmega328PB was released, it has proven to be a better and cheaper MCU for manufacturing than the ATmega328P, the current MCU used by the Arduino Nano and clones.

“The adoption of the ATmega4809 in the next-generation Arduino board strengthens our partnership…” said Microchip v-p 8bit MCUs Steve Drehobl. Sadly, there are no other clues to what sort of Arduino ...

At its core, the Flexduino is essentially a clone of the classic Arduino Uno dev board. However, instead of using the standard ATmega328PB microcontroller chip, Rajesh opted for a low-profile ...

So eventually the decision was made to move the book over to the low-power ATmega328PB microcontroller and leverage the MiniCore project so the books could be programmed with the Arduino IDE.