USB programmer There are few components – the ATtiny45 microcontroller, two Zener diodes, a capacitor and several resistors. Of course, there are still connectors – USB plug and IDC-6 plug. Resistor R1 informs host about presence of USB device... Electronics Projects, Tiny USB programmer AVR microcontrollers AVRDUDE "avr project, microcontroller projects, programmer circuit, " Date 2019/08/04