/diy/ - Do It Yourself

>>1910688
Arduino and clones are, above everything, devboards and tools on your workbench, and thus have convenience features, such as builtin serial to usb interface chips.
They can be used for prototyping and interfacing, but when doing a project for real, you'd move to a real board, be it just a FR4 prototype board or a real PCB.
There, I would use an arduino-as-isp to program bare chips. I could also use dedicated avrisp (tiny board with the ISP header). Or a pickit4. I even have a TL866, which can do high voltage parallel programming. I've never had to use it for that purpose though. But I have burned a great deal of 27C roms with it, such as my Amiga's kickstart roms.