I know this is most probably not an issue with GRBL itself and thus should not be posted as an issue for that, but I have no idea where to look for support regarding this specific problem. Long story short, after several ours of fiddling around I finally managed to brick my controller board. The connection seems to be bridged by something – maybe a diode? Nevertheless, I tried to connect my programmer (usbasp-clone and ArduinoISP). For some reason I can’t get a direct connection between the pin associated with MISO and its counterpart on the chip itself. I also read the issue about connecting limit switches to this board ( #123) and as mentioned there I re-checked all pins from the header regarding there mapping to the 328P. I found Mariano Gaston’s YouTube video that promises the feasibility of this procedure and shows the necessary connections. Hello, I just recently decided to update my Chinese “Woodpecker CNC Board” to the most up-to-date grbl Version 1.1f.
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