Since this is a tutorial for newbies, I'm intentionally using a chip with years of code, flashing, and peripheral circuit examples. It's also compatible with the Arduino Nano pinout so students can add peripherals with outside circuit examples.
For personal projects, I also prefer using fancier chips like the ESP32 series or the new generation of ATtinys.
For personal projects, I also prefer using fancier chips like the ESP32 series or the new generation of ATtinys.