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Hello,

I try to mount a sensor (BLtouch) on my Ultimaker O +, no connection problem but when I send the firmware suitable for it on the printer (https://github.com/Bevaz/Marlin/tree/Auto_level_3.00) , it loads fine but then the printer does anything: no LCD display and when I send the command "move z", via repetier, the engine makes a noise and do not move ...

Help please!

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Sounds as if the configuration is not set for an Ultimaker Original+. Best thing you can do is to compare the configuration.h of this special Marlin version with the configuration.h from the UMO+ repository line by line. There are special apps for this, e.g. Winmerge for Windows user. Make sure the configuration.h selects the correct components for e.g. display (Ulticontroller), for the board (Ultiboard 2.x) etc.

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Thnks... i don't now the repository ;)

I compared the versions of .h configuration file (with that of Cura 2) ... there are no difference.

But I did a test: open the hex file (Cura 2) Arduino and send in Ultimaker it is downloaded but the printer stops working. While the same file sent via Cura 2 makes it work.

I think that sends or compilation (in hex file) Arduino modified the file and makes it unreadable by Ultimaker

Moreover, the weight of the hex file created by Arduino is heavier than the hex file Cura 2

Ideas ???

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