This page is under construction and may not have complete or up-to-date information.
Description
Machine electronics and main components.
Use these options to define the machine hardware, including the mainboard, serial ports, etc. These are the most basic settings for every type of machine that Marlin supports.
Motherboard of the machine.
Set the motherboard ID using one of the BOARD_... constants defined in boards.h.
This option provides Marlin with the pin definitions it needs to control the onboard components and connected peripherals.
Example
#define MOTHERBOARD BOARD_RAMPS_14_EFBMain serial port.
The main serial port is used to communicate with the host. This is usually the serial port connected to USB.
Examples
#define SERIAL_PORT 0 // Set the first serial port to UART0#define SERIAL_PORT -1 // Set the first serial port to Native USBSecondary serial port
The secondary serial port can be used to communicate with a host, serial controller, or WiFi interface.
Third serial port
The third serial port can be used to communicate with a host, serial controller, or WiFi interface.
RS485 serial port (i.e., CANbus)
The RS485 serial ports is used to communicate with peripherals that use the CAN bus protocol.
Leave this set to 1 to use the default protocol. Check your host for protocol compatibility.