AVR的USB开发源代码 USB-RS232转换-AVR-USB309 for ATmega8 or ATtiny2313 RS232 converter

For this project you need a 3.7v power supply that prepared by LM317 regulator. So you need MAX232 for connect uart to pc .my AVR chip project is Mega8 that you can program on any Avr chip have 2kbyte rom. In bascom spi hardware don’t work correct, s