Hi all, This has been driving me absolutely insane for the past couple days. I soldered together an Atmega644P standalone circuit, and also added a CH340G usb to serial converter as well with all the necessary components. But for the life of me, I simply can't get sketches onto the chip. I checked …

Alright, so I desoldered the CH340G chip and replaced it with a new one. It works now. I pray to God, PLEASE to not give my circuit any more issues... This is REALLY weird since I have no idea when and how the chip got damaged. When it stopped working again after my little crystal switcheroo "solved…

Can't download sketches via USB-serial converter onto 644P, even with a bootloader

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PocketHarambe101 November 11, 2021, 8:02am 5

Thanks for the input, I'll try that. Should I have multiple near the chip/regulator or is one for each ok?

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Can't download sketches via USB-serial converter onto 644P, even with a bootloader

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