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Dual Extruder Firmware with VIKI LCD Panel
Posted: Fri Oct 03, 2014 4:00 pm
by Q*bert
I have a VIKI LCD panel (same as was sold by MakerGear at one time) and I love having it mostly for monitoring temps while printing from the SD card.
I enabled the VIKI support in the current dual firmware and I updated pins.h to be the same as the working single extruder VIKI firmware. The display works fine, but the buttons aren't being properly read.
I'll play around with it more this weekend, but before possibly reinventing the wheel, has anyone else modified the dual extruder firmware to enable the VIKI/MakerGear LCD?
Re: Dual Extruder Firmware with VIKI LCD Panel
Posted: Mon Apr 06, 2015 10:25 pm
by fmeroney
Any Luck, I will be having the same issue.
Re: Dual Extruder Firmware with VIKI LCD Panel
Posted: Mon Apr 06, 2015 10:54 pm
by insta
fmeroney wrote:Any Luck, I will be having the same issue.
I have a hacked-up version of the MG firmware with Viki support and dual-extrusion attached. It does NOT have the skipping problems I talked about earlier. It's been reliable for me but it should be noted this is an experimental version, not supported by MG, etc etc.
If you get errors about missing LiquidTWI2, move the two files from the root folder into the Marlin folder and relaunch the Arduino IDE before building.
Re: Dual Extruder Firmware with VIKI LCD Panel
Posted: Tue Apr 07, 2015 1:02 am
by fmeroney
Fantastic, i will be purchasing the dual extruders... In gerneral are they worth it? Do you have any pictures?
Thank for the quick reply!
insta wrote:fmeroney wrote:Any Luck, I will be having the same issue.
I have a hacked-up version of the MG firmware with Viki support and dual-extrusion attached. It does NOT have the skipping problems I talked about earlier. It's been reliable for me but it should be noted this is an experimental version, not supported by MG, etc etc.
If you get errors about missing LiquidTWI2, move the two files from the root folder into the Marlin folder and relaunch the Arduino IDE before building.
Re: Dual Extruder Firmware with VIKI LCD Panel
Posted: Tue Apr 07, 2015 3:59 am
by insta
[quote="fmeroney"]Fantastic, i will be purchasing the dual extruders... In gerneral are they worth it? Do you have any pictures?
Thank for the quick reply!
Check the other threads in the Dual Extruder forum. Both questions answered and more

Re: Dual Extruder Firmware with VIKI LCD Panel
Posted: Wed Apr 08, 2015 6:13 pm
by dsmith
insta wrote:fmeroney wrote:Any Luck, I will be having the same issue.
I have a hacked-up version of the MG firmware with Viki support and dual-extrusion attached. It does NOT have the skipping problems I talked about earlier. It's been reliable for me but it should be noted this is an experimental version, not supported by MG, etc etc.
If you get errors about missing LiquidTWI2, move the two files from the root folder into the Marlin folder and relaunch the Arduino IDE before building.
Have you made any changes to the experimental version of the firmware or will MG send the firmware updates with the dual upgrade?
-Don
Re: Dual Extruder Firmware with VIKI LCD Panel
Posted: Wed Apr 08, 2015 6:39 pm
by insta
dsmith wrote:insta wrote:fmeroney wrote:Any Luck, I will be having the same issue.
I have a hacked-up version of the MG firmware with Viki support and dual-extrusion attached. It does NOT have the skipping problems I talked about earlier. It's been reliable for me but it should be noted this is an experimental version, not supported by MG, etc etc.
If you get errors about missing LiquidTWI2, move the two files from the root folder into the Marlin folder and relaunch the Arduino IDE before building.
Have you made any changes to the experimental version of the firmware or will MG send the firmware updates with the dual upgrade?
-Don
Eh, just "comfort" changes. The homing speeds are a bit higher, the accel and jerk are a bit lower. MG does not send firmware with the dual-extruder update, at least they didn't when I ordered mine.
Re: Dual Extruder Firmware with VIKI LCD Panel
Posted: Wed Apr 08, 2015 6:50 pm
by jsc
Re: Dual Extruder Firmware with VIKI LCD Panel
Posted: Wed Apr 08, 2015 7:18 pm
by insta
Firmware without viki

Re: Dual Extruder Firmware with VIKI LCD Panel
Posted: Wed May 06, 2015 10:22 pm
by dsmith
Insta,
I installed the firmware and my screen looks like this picture in simplify3D... Any ideas?
-Don