Since then I’ve tried many different configurations, with and without external power supply using windows and linux hosts, testing my programmers with other 328p chips, etc. I’ve got no log from that procedure but now, the board is not serial-printing its version number on startup anymore.

I clicked the “Burn bootloader” entry, it did something and then crashed. Reading | # | 100% 0.02sĪvrdude.exe: Expected signature for ATmega328P is 1E 95 0Fĭouble check chip, or use -F to override this check.Īfter several hours I thought it would be a great idea to just modify Arduino’s avrdude configuration to expect this device signature. `$ avrdude -c avrisp -p m328p -P com6 -b 19200 -B 100Īvrdude.exe: AVR device initialized and ready to accept instructions With all connection in place and the external power supply connected I got something like this from avrdude: From the begin on I had problems connecting the Woodpecker using the usbasp-clone, so I mostly tried to update with the avrisp. So sorry for that, but any help is highly appreciated!įollowing first what I’ve done to kill the board and then what I’ve tried to get it back up.Īs described above I am using an usbasp-clone and an Arduino Nano as ArduinoISP.

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.

Woodpecker 2.8 grbl