Overview What happens when... Powering up: Power Switch turned to ON Chamber lights (dim mode), display backlight and fans turn on. Material bay drive homes. Controller SBC Performs Power On Self Test (POST). POST looks at voltages, checksum and memory, etc. BIOS starts and loads the OS (operating system) from the hard drive to the SBC RAM. Performs basic hardware setup such as checks for number of material bays and loads gantry parameters, etc. OS boots - performs check disk (chkdsk) and loads Linux OS from hard drive to RAM. After chkdsk is complete, “Copyright” screen will be displayed. Once printer software is loaded to RAM the controller runs the POST test again.
Loads printer software from hard drive to RAM. SBC send second reset (in) command to controller. “Starting Up” “Initializing” is displayed. Controller receives updated parameters from SBC. Loads parameters to controller (Coldfire chip) (e.g. extrusion parameters). Power enabled to the XYZ motors, via the XP command. SBC enables power to XYZ motors • Chamber lights on (full power) “Starting Up” “Calibrating” is displayed • Load globals • Door locks • Performs “Calibrate” (home) sequence: “Calibrate” (home) by issuing move commands to the controller 1. Moves Z stage down to Z EOT sensor 2. Moves head to X home (BOT) sen- sor 3. Moves head to Y home (BOT) sen- sor 4.
Moves head to Y EOT sensor Head and chamber heaters begin to heat up, via the th, tr and tx commands “Idle” is displayed -3 Commands head and chamber to heat to “Idle” temperature (sets temperatures)