Start the Arduino IDE if you haven't already and then click on "File" and then "Open". Change "Files of Type" to "Sketches (*.ino, *.pde)" Browse to the location where you unpacked the firmware. You may have to go in one or two more sub-directories to reach the folder named "Repetier". This is where the firmware source code is.
Click on the "Repetier" file that has the Arduino IDE logo associated with it. This will load all the firmware files into the IDE.
Click on the tab marked "Configuration.h". Locate the line "#define PRINTER". Change the value to match your printer model (default is 5 = Rostock Max v3)
Locate the line "#define HOTEND". Change the value to match your hot end. (Default is 3 = HE280)
Locate the line "#define MOTHERBOARD". This tells the firmware what kind of hardware you have. The Rostock Max v1, v2, and v3 use the RAMBo (301). Eris and Orions after 8/1/2016 use the Mini-RAMBo (302)
Locate the line "#define Power_Supply". by default it is set to 2 (Brick or Rail Style PSU). On older models of Rostock Max v2 and Orions equiped with an ATX supply you will need to change this variable to 1
Just like you did for the eeprom_clear program, click the "Play" button in order to compile and upload the new firmware to the Rambo. You should see "Done Uploading" in the status bar when it's finished.
Your contributions are licensed under the open source Creative Commons license.
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