This is my minimum approach!
(I am using the atmega8 firmware... so it runs at 8 mhz but without an external oscilator, just an stable 3.3v power and the reset button)
This is my minimum approach!
(I am using the atmega8 firmware... so it runs at 8 mhz but without an external oscilator, just an stable 3.3v power and the reset button)