Make a tiny Arduino with just one IC using the ATtiny84 or ATtiny85
The ATtiny84 and ATtiny85 microcontrollers are great little devices when you need the flexibility of a microcontoller in your project but don’t need all the bells and whistles of the more complex microcontrollers found in common Arduino boards, such as the Arduino Mega or Uno. That said, for such a small pin count they are…