So he tried his hand with some really small SMD parts by building this USB to serial Arduino programmer. The chip he went with isn’t the FTDI part we’re used to. Instead of using an FT232RL ...

Why not turn it into an In System Programmer for AVR chips ... It uses the data wires from four different USB cables to program AVR chips, enlisting the help of a 74HC00 NAND gate along the ...