On Wed, Jun 8, 2022 at 4:47 PM Konrad Rosenbaum <[email protected]> wrote: > the Nano clones from China often have bad or no bootloaders. This can be > very frustrating. I have dozens of those and only the ones I flashed > myself have the correct bootloader... > > My recommendation: buy an USBasp clone on Amazon or eBay (a bit under > 10Euro or 10$US) and forget about the on-board bootloader - it is much > much easier to use the proper ISP port and dispense with fiddling with > the finicky reset logic of the bootloader. If you can afford it you > could buy an AVR ISP mkII clone instead for about 20-25 bucks - those > are (in my experience) a bit easier to use and even more stable than the > USBasp.
Indeed usbasp is probably the most popular low cost programmers and it is rather cheap -- you can get it around US$3 to US$5 from AliExpress (shipment may take a bit of time). And yes AVR ISP mkii clones are also pretty good for its price. There are other alternatives as well like USBtinyISP, FT232R/FT245R based programmers or PICKit 2 clones or things like that. Ref: https://github.com/avrdudes/avrdude/discussions/1019#discussioncomment-3128949 -- Xiaofan
