26 August 2020
I’ve done the upgrade previously to get the 3.x firmware in the first place, so I knew I needed to upgrade in 2 steps: the LCD via a microSD card and the main board via Cura over USB.
I dug through the manuals and directions a bit,
and decided I could copy the contents
of the raw zip
onto a formatted SD card
instead of writing the
to the raw SD device with
That fit on a handy 2GiB card.
I took the couple screws out of the front panel,
inserted the micro SD card,
powered it up,
and watched the LCD display all the new images it was loading.
When it’s done, I turned it off,
and replaced the screws.
Then I could easily connect the printer
to the Linux laptop via USB,
and upload the custom firmware
from Cura’s Manage Printers screen.
I did need to take a moment
to add my user to the
to get access to the USB ports
for serial communication
to the printer.
Upon reboot, the printer wiped out the old incompatible settings, and I rebooted it again to see the new startup screen and version numbers. I ran through some tunings: PID and extruder, and kicked off a test print that went fine.
I currently have the thermal protection enabled, and I’m hoping it’s not too sensitive, and I can keep it turned on. I expect this upgrade will hold for a long time until I see 5.0 available, and it’s had some time to settle.
12 March 2018
The sanding stick needed a little adjustment to be assembled successfully.
11 March 2018
I finally modeled a sanding stick for small sandpaper belts I bought a year ago to kickstart the project.
03 March 2018