CH340 as bootloader programmer | Failed to enter programming mode #137
Godehardt2003
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Just a small thing that occurred on my China Arduino CH340.
I tried to burn the HoodLoader2 bootloader on my Arduino Mega 2560 with a CH340 Arduino Uno. Wired everything up as described on this page https://github.com/NicoHood/HoodLoader2/wiki/Burn-the-bootloader-from-another-Arduino .
What I got was a frustrating "Failed to enter programming mode. Double-check wiring!".
Just to make it short: I don't know why but my ICSP Pins on my China CH340 were not working. Solution was to use Pin 10-13 which have the same functions:
Couldn't find any previous post about that, I hope it helps someone.
Might be a note to add on https://github.com/NicoHood/HoodLoader2/wiki/Troubleshoot-FAQ
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