A simple and inexpensive way to program new AVR ATtiny214, ATtiny414, ATtiny814 and Atmega microcontrollers using by the UPDI interface - ООО "НПК "Спецтехнаука"
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FTDI TTL-232RG-VSW5V USB to TC2030 Debug Cable | Tag-Connect
MICROCONTROLLER to PC Communication Via PL2303 (USB TO UART TTL) Converter - ATMega32 AVR