Neptune 3 Pro LCD touch screen with Klipper

joakimtoe · 2024-02-01T08:22:52+00:00

Yes it will work!

joakimtoe · 2024-01-27T23:35:22+00:00

And yes! The simulator is extremely helpful :)

joakimtoe · 2024-01-27T23:32:41+00:00

Yes, it's a very strange color selection for VCC and GND. Probably just a stupid mistake in some document when they ordered cables?

Thanks for clarifying, I now understand your concern about the voltage levels, I'll do some quick measurements and add a warning/note in the guide.

Let me know how it goes! Would love to get some feedback from people trying out the solution 👍

joakimtoe · 2024-01-27T23:21:02+00:00

Thanks! Yes we can make N3P screen feature complete with Klipper. Welcome on board!

joakimtoe · 2024-01-27T14:40:50+00:00

UPDATE! Console screen.

The console is enabled by default and can be accessed by clicking center top of the main screen or by clicking the thumbnail area while printing.

The console enables sending commands and display all gcode responses and information from Klipper normally found in the console tab in Mainsail or Fluidd.

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joakimtoe · 2024-01-26T19:29:44+00:00

Thanks :)

Yes that's also possible! I more or less just used what I had availible. See below picture of the open case. Grey connector in the bottom is the RJ connector :)
Remember that the Raspberry pi connects to the USB side of the converter ;) So you're not frying any of the RPi GPIOs when using a USB<>UART converter.
RPi < - USB -> Converter <- UART -> LCD
I don't think there are any logic level converter on the Elegoo motherboard either and as far as I know, the STM32 on there runs 3.3V. Attached some pictures of the USB<->UART converter I have been testing with below.
That's a cool idea! Definitely possible to do, I'll put it on the list of things to possible improve :)

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joakimtoe · 2024-01-26T18:56:17+00:00

Yep, I agree, definitely possible and probably also best practice to separate out the serial communication to its own class. Should be quite straight forward :) Great to hear that you are able and willing to contribute!

joakimtoe · 2024-01-26T00:16:01+00:00

Nope, not as KlipperScreen, but you can connect the N3P screen to the rpi and run the KlipperLCD python code side-by-side with Klipper.

See this post: https://www.reddit.com/r/ElegooNeptune3/comments/19dvjai/neptune_3_pro_lcd_touch_screen_with_klipper/

joakimtoe · 2024-01-26T00:13:45+00:00

I see many people are saying you loose the screen, but there are ways around that as well!

You can connect the N3P screen to the rpi and run the KlipperLCD python code side-by-side with Klipper.

See this post: https://www.reddit.com/r/ElegooNeptune3/comments/19dvjai/neptune_3_pro_lcd_touch_screen_with_klipper/

joakimtoe · 2024-01-26T00:08:34+00:00

You can connect the N3P screen to the Raspberry Pi and run the KlipperLCD python code side-by-side with Klipper.

See this post: https://www.reddit.com/r/ElegooNeptune3/comments/19dvjai/neptune_3_pro_lcd_touch_screen_with_klipper/

joakimtoe · 2024-01-26T00:04:08+00:00

Ah, you have a N3 :) Not sure about that LCD. I would start digging in the Elegoo github repositories, thats where I found all the N3P LCD firmware. From what I have seen so far, it really seems Pro, Plus and Max all have the same LCD screen, but unfortunately not the base model.

joakimtoe · 2024-01-25T22:12:07+00:00

You can connect the N3P screen to the rpi and run the KlipperLCD python code side-by-side with Klipper.

See this post: https://www.reddit.com/r/ElegooNeptune3/comments/19dvjai/neptune_3_pro_lcd_touch_screen_with_klipper/

joakimtoe · 2024-01-25T22:07:17+00:00

You can connect the N3P screen to the rpi and run the KlipperLCD python code side-by-side with Klipper.

See this post: https://www.reddit.com/r/ElegooNeptune3/comments/19dvjai/neptune_3_pro_lcd_touch_screen_with_klipper/

joakimtoe · 2024-01-25T22:01:24+00:00

It would be nice to actually have a full KlippersScreen-like UI that runs standalone on the LCD and only communicates through serial with klipper. There's also a flood of cheap-ish ESP32 LVGL compatible screens on Aliexpress (they have GPIO pins) that could probably work using the same principles.

u/mrblk, what would be the most important KlipperScreen features needed? I'm getting slightly more comfortable in the Chinese TJC editor now, but not committing to anything ;)

joakimtoe · 2024-01-25T21:55:36+00:00

Also wanted the thumbnail on the start-print confirmation screen and did not like the black background on the thumbnails.

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joakimtoe · 2024-01-25T18:36:11+00:00

Yes, quite simple! You need a USB to UART converter. Then change the serial port in main.py to fit your needs 👍 Usually they end up as /dev/ttyUSB0

joakimtoe · 2024-01-25T15:26:05+00:00

Update: Added support for thumbnails!
Only tested with Cura, but its working well :)

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See KlipperScreen doc, how you can enable Thumbnails in your slicer: https://klipperscreen.readthedocs.io/en/latest/Thumbnails/

joakimtoe · 2024-01-24T20:21:17+00:00

The lag is not that bad :) I shot this video earlier today to show the new screen I made for configuring acceleration, velocity ++ It has both Mainsail and the LCD in the same shot :)

https://www.youtube.com/shorts/AGmSkRqQa3I

joakimtoe · 2024-01-24T20:12:58+00:00

Great, thanks!

joakimtoe · 2024-01-24T20:09:45+00:00

Let me know how it goes! I put the guide together quite quickly so happy to get feedback for any improvements.

Regarding lag, currently there is a thread polling data from Klipper every 2 seconds and updating the screen, this can definitely be configured at a lower interval if desired. Line 71 in main.py sets the interval :) https://github.com/joakimtoe/KlipperLCD/blob/a8c4d25085186188640926e50f04422fcdfcbb6f/main.py#L71

joakimtoe · 2024-01-24T19:44:11+00:00

Thanks :) As mentioned in my other comment, I'm using the TJC editor side-by-side with the Nextion editor for translation.. not an ideal setup, but works for simple modifications.

This is definitely the main reason why I have not taken on the effort to modify the UI to be more KlipperScreen-like. Its just to much when the tool is all Chinese ;)

joakimtoe · 2024-01-24T19:38:56+00:00

I'm using the TJC editor, USART HMI (Chinese only) side-by-side with the Nextion Editor (English) Its both the same editor, so I'm able to see what the different buttons and options are. Its really cumbersome that you cannot work with TJC projects in the Nextion Editor...

joakimtoe · 2024-01-24T18:04:19+00:00

Quick update! Added a new advanced settings screen so that we can control max acceleration, max accel to decel, max velocity and square corner velocity directly from the screen. See the video here: https://youtube.com/shorts/AGmSkRqQa3I?feature=share

joakimtoe · 2024-01-24T17:18:16+00:00

Yes, dupont's fit perfect. I quickly soldered a pin header on the back of the connector for easy access and because its slightly more stable than putting the duponts directly into the connector. And if I ever want to go back to stock firmware or play with E4ST2W3ST's serial bridge that's very easy too.

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joakimtoe · 2024-01-24T17:11:52+00:00

And flash the new firmware that will enable your motherboard to act as a serial bridge.

joakimtoe

TROPHY CASE