nanoDLP

I Think i´ve found the problem with my screen. It´s probaply the node js server. When i install it by following the instructions on githup, i get the following messages:

2018-11-29 14:54:09 (260 KB/s) - ‘node-v6.4.0-linux-armv6l.tar.gz’ saved [12746855/12746855]

unlink: cannot unlink '/usr/bin/node': No such file or directory
unlink: cannot unlink '/usr/sbin/node': No such file or directory
unlink: cannot unlink '/sbin/node': No such file or directory
unlink: cannot unlink '/usr/local/bin/node': No such file or directory
unlink: cannot unlink '/usr/bin/npm': No such file or directory
unlink: cannot unlink '/usr/sbin/npm': No such file or directory
unlink: cannot unlink '/sbin/npm': No such file or directory
unlink: cannot unlink '/usr/local/bin/npm': No such file or directory
pi@raspberrypi:~/nextion $

Does anyone have an idea how i can solve these problems?

hello good guys
I need help, I have a nextion of 2.4 "inches but when trying to follow the git https:// github.com /Tibus/TouchScreen-For-NanoDLP
I can not make it work, the printer design I'm following is from @ToS.
If anyone could give me a tutorial to make it work, I would be very grateful

FIXED: I finally found these instructions and followed them.

Nextion displays being supported by NanoDLP internally.
To use them you need to load NanoDLP HMI on Nextion Display and enter correct address on NanoDLP.
If you are connecting Nextion to Raspberry Pi without Serial2USB adapter, you need to enable serial on Raspberry Pi by following steps below:
SSH into your Raspberry Pi
Run command: sudo raspi-config
Enable Serial
sudo nano /boot/cmdline.txt
remove command "console=ttyAMA0,115200" and "console=serial0,115200"
sudo nano /boot/config.txt
Add following line: dtoverlay=pi3-disable-bt
sudo reboot

Last edited by biqut2 (2019-07-26 22:24:41)

NanoDLP internal nextion support is quite easier to use. Problem with automating process is ever breaking backward compatibility on rpi. Any assumption about OS could be wrong on the next version.
Almost all of the new rasbian release break some function on nanodlp side. It is quite easy to automate serial port activation or so but it could break something in future.

Hello Shahin

I want to customize nextion interface and I need to latest HMI file for manipulating it.
please give me a link to download this file (My Nextion LCD model is NX4827T043_011).

Thanks a lot for your helping

Last edited by Kaveh (2019-08-22 13:27:26)

No you do not need to follow github page as it is external program no longer required for nextion.

What you need to do:
1. load TFT image on nextion display
2. connect nextion to your pi using serial2usb adapter
3. put correct path on the nanodlp setup page.

If you want to use serial (GPIO) instead of serial2usb, you need to enable serial port on raspberry pi. You can see list of changes required by pushing ? button above nextion input box on the setup page.

I REALLY wish that the OP or admin would add some clarification to the first post! I think it does a great disservice to the reputation of nanoDLP to have all this confusing and conflicting information out there. I think that there is a bit of expert blindspot going on too. Some of it may be appropriate to the older versions but its really unnecessary to have to go through it all.

Here is what I did to get my Nextion working. It turned out to be be MUCH simpler than any of the previous instructions. After HOURS of wasted reading the thread and trying all the well intentioned advice, the light went on after my other post. I sat down to write this up and document it, hoping to save others the same aggravation.  I realize that some of the images turned out to be a bit on the large size after writing all this, but I am not going back to make them smaller.

I am using a Nextion NX4024T032 - Generic 3.2" HMI TFT LCD Touch Display Module and I am using the serial over GPIO instead of the supplied serail2USB adapter.

1. Install the distro to the micro SD card like any other raspi distro.

2. Use raspi-config to configure the serial adapter.  I am copying info from https://collingwood.me.uk/blog/index.ph … ield-v1-1/ to make this more comprehensible.

3.Set up the serial interface
pi@raspberrypi:~ $ sudo raspi-config

In the main config screen, scroll down to “Interfacing Options” and hit enter. Its Number 5 on the list at the time of this writing.

Scroll down to “Serial” and hit enter. Its 'P6' at the time of this writing.

The first configuration choice is "Would you like a login shell to be accessible over serial?"
Use the arrow keys to swtich options, select “No”

Enter to proceed to the next page
The next choice is to enable the hardware serial port-
"Would you like the serial port to be enabled?"
Use the arrow keys to swtich options, select “Yes”

Hit enter and you will get the following confirmation screen-

Hit enter to return to the main raspi-config menu. Use the Tab key to access the bottom selections, select “Finish” and hit enter.

Hit enter to reboot:

4. Perform the usual ritual of raspi update- SSH to the Pi and do the usual
pi@raspberrypi:~ $ sudo apt-get update
pi@raspberrypi:~ $ sudo apt-get upgrade

I did not reboot yet, I will do that in the next part.

5. Set up the Nextion
The Nextion has an onboard processor and graphics system. It needs some configuration instructions. You need to put the right *.tft file on a microSD card, put that in the Nextion and then boot it up. The Nextion will find the file and start updating automatically.

Get the current Nextion files from the NanoDLP repository. Either browse to it via the 'Download' page or go here- https://www.nanodlp.com/download/#nextion. You will need to download and expand the compressed file and then choose the one that matches your unit. The repo shown here is the file list for V1.1.0-tft from nanoDLP.
I have the 3.2" basic one-

I put it on a spare card and powered up the Nextion. The screen turned a light gray, and in red letters it gave me status updates as it updated.

6. Connect the Nextion to the Pi. I am using the included 4 wire cable that came with the display to connect to the Pi. Here is the image from Tibus' github page-

I am not sure of the BCM pin assignments, but the header connector position is correct. This is my reference to Pi pinouts - https://pinout.xyz/.

This is where I rebooted the raspi and things initialized. After reboot, the display on the Nextion showed the new logo while connecting and the new Human Machine Interface appeared.

7. Update NanoDLP.  Use a browser to go to the instance of NanoDLP. I assume that you can do this without instruction. After you go through the initial startup of the instance of nanoDLP, where you choose the machine type and setup your WiFi, you will want to update to the most current system. 
(At some point, I had also applied the Wanhao D7 configuration from Teching Tech, so the machine ID is 'NanoDLP D7.' Yours will be different).

Look at the version at the top right hand corner.

If there is a blue box here telling you that there is an update available, click it and follow the prompts to install the update. Alternatively, you can go to the Setup->Tools ->Upgrade nanoDLP menu to get there.
You want to update to a version greater than #2101. I am on #2314 at the time of this writing. The system will reboot to complete the upgrade.

8. After the upgrade, you need to set nanoDLP 'Setup Mode' options to "Advanced"
In the first settings group, under "Printer Settings"

Scroll to the bottom and hit the green button to 'Submit'

9. After the display refreshes, scroll to the bottom where the 'Submit' button is.
In the section for 'Various Settings', there is an option for 'Nextion Display Port Address'
Since the Nextion is the only serial device connected to the Pi at this time, there is only one option.

10. I can not remember if I rebooted or restarted nanoDLP, but the display if responsive and functional.
My display now works as is shown in the YouTube video- https://www.youtube.com/watch?v=XrBzG2-P-Qo

Last edited by sinned6915 (2019-09-07 17:23:42)