Converted Ultimaker 2+ to Duet Wifi - Interface to UM2 LCD?



  • I have an Ultimaker 2+ that I converted to Duet Wifi + BLTouch. Enjoying the upgrade so far but lamenting the loss of the UM2+ standard LCD display and rotary control knob. Yes I know there's the PanelDue, but as my son remarked, the aesthetics of the machine are spoiled if you don't have the stock LCD working.

    I know there's code in C++ for the UM2 LCD menu system running under Marlin firmware. I also realize there'd be an electrical interface challenge in getting this to connect to the Duet.

    Anyone working on this or even thought about it? Lots of aging UM2 machines out there crying out for a 32bit upgrade.


  • administrators

    Some web searching suggests that the UM2 display is a Displaytech 204A-CC-BC-3LP which is a 20 characters x 4 lines text display. We decided against supporting 20 x 4 text displays in RepRapFirmware because 12864-based graphics displays and colour TFT displays have displaced them and can show much more data. Also they need 11 I/O pins to control them, which is a lot.

    if you want to preserve the retro look of that display, you could use an Arduino to drive it and communicate with the Duet through the PanelDue serial port. Caution: the Duet uses 3.3V signals levels, so you must not connect the URXD and UTXD pins of the Duet directly to a 5V Arduino.



  • Im in the process of converting Rostock Max v2 and also want the rotary control knob for Z height control. Any way that we can implement a rotary control knob?


  • administrators

    @manyakus said in Converted Ultimaker 2+ to Duet Wifi - Interface to UM2 LCD?:

    Im in the process of converting Rostock Max v2 and also want the rotary control knob for Z height control. Any way that we can implement a rotary control knob?

    With the Duet WiFi/Ethernet, not currently. With the Maestro, a 12864 display + rotary encoder is supported.



  • @dc42 said in Converted Ultimaker 2+ to Duet Wifi - Interface to UM2 LCD?:

    Some web searching suggests that the UM2 display is a Displaytech 204A-CC-BC-3LP which is a 20 characters x 4 lines text display. We decided against supporting 20 x 4 text displays in RepRapFirmware because 12864-based graphics displays and colour TFT displays have displaced them and can show much more data. Also they need 11 I/O pins to control them, which is a lot.

    UMO might be 20x4 but UM2 is certainly not. I'm pretty sure it's some form of 12864 but I would need to check.



  • @lowracer said in Converted Ultimaker 2+ to Duet Wifi - Interface to UM2 LCD?:

    ... my son remarked, the aesthetics of the machine are spoiled if you don't have the stock LCD working...

    Not exactly what you are looking for but I am using the paneldue as a tether device. That is, it's not attached mechanically to the printer and when I want to use it I pick it up and use. This way you can keep the original look of your printer (though non working display). It may also be ergonomic considering the small and non slanted screen of the UM2.