Isn't having two factories, one to produce a 555 and the other to produce an ATtiny, the waste of resources? I personally prefer to only have to keep one chip in stock; the factory-calibrated RC oscillator is more accurate than what I would build out of discrete components anyway.
(Also, an ATtiny is not an Arduino. The Arduino chips cost like $5, an ATtiny is 50 cents. ATtinys have much less flash, EEPROM, and ROM. But can still produce a nice square wave :)
(Also, an ATtiny is not an Arduino. The Arduino chips cost like $5, an ATtiny is 50 cents. ATtinys have much less flash, EEPROM, and ROM. But can still produce a nice square wave :)