so im trying to repurpose the old board from my 3d printer, it was an Anet A8 built around an atmega1284p, with a ch340g for usb. in arduino on windows 10 i am able to upload sketches to it using some custom board files ‘sanguino’ or something. after setting sanguino_atmega1284p as my board in platf…

drunkscientist February 17, 2021, 9:24pm 2

found the problem… platformio is great at autodetecting MOST things, upload_speed = 57600 still needs to be manually set here…

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Atmega1284p 'avrdude: stk500... not in sync' with known good wiring