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DWIN_T5UIC1_LCD_E3S1

Python class for the Ender 3 V2 and Ender 3 S1 LCD runing klipper3d with Moonraker

https://www.klipper3d.org

https://octoprint.org/

https://github.com/arksine/moonraker

Setup:

Disable Linux serial console

By default, the primary UART is assigned to the Linux console. If you wish to use the primary UART for other purposes, you must reconfigure Raspberry Pi OS. This can be done by using raspi-config:

  • Start raspi-config: sudo raspi-config.
  • Select option 3 - Interface Options.
  • Select option P6 - Serial Port.
  • At the prompt Would you like a login shell to be accessible over serial? answer 'No'
  • At the prompt Would you like the serial port hardware to be enabled? answer 'Yes'
  • Exit raspi-config and reboot the Pi for changes to take effect.

For full instructions on how to use Device Tree overlays see this page.

In brief, add a line to the /boot/config.txt file to apply a Device Tree overlay.

dtoverlay=disable-bt

Check if Klipper's Application Programmer Interface (API) is enabled

Open klipper.service and check ([Service]... ExecStart=...) if klipper.py is started with the -a parameter

sudo nano /etc/systemd/system/klipper.service

If not, add it and reboot your pi.

Example of my klipper.service:

#Systemd service file for klipper

[Unit]
Description=Starts klipper on startup
After=network.target

[Install]
WantedBy=multi-user.target

[Service]
Type=simple
User=pi
RemainAfterExit=yes
ExecStart=/home/pi/klippy-env/bin/python /home/pi/klipper/klippy/klippy.py /home/pi/klipper_config/printer.cfg -l /home/pi/klipper_logs/klippy.log -a /tmp/klippy_uds
Restart=always
RestartSec=10

Library requirements

Thanks to wolfstlkr

sudo apt-get install python3-pip python3-gpiozero python3-serial git

sudo pip3 install multitimer

git clone https://github.com/RobRobM/DWIN_T5UIC1_LCD_E3S1.git

Wire the display

  • Display <-> Raspberry Pi GPIO BCM
  • Rx = GPIO14 (Tx)
  • Tx = GPIO15 (Rx)
  • Ent = GPIO13
  • A = GPIO19
  • B = GPIO26
  • Vcc = 2 (5v)
  • Gnd = 6 (GND)

Here's a diagram based on my color selection:

I tried to take some images to help out with this: You don't have to use the color of wiring that I used:

I have added some Ender 3S1 specific images:

Run The Code

Enter the downloaded DWIN_T5UIC1_LCD_E3S1 folder.

To get your API key run:

~/moonraker/scripts/fetch-apikey.sh

Edit the file run.py and past your API key

nano run.py

This is how the run.py looks for an Ender3v2 and Ender 3 S1

#!/usr/bin/env python3
from dwinlcd import DWIN_LCD

encoder_Pins = (26, 19)
button_Pin = 13
LCD_COM_Port = '/dev/ttyAMA0'
API_Key = 'XXXXXX'

DWINLCD = DWIN_LCD(
	LCD_COM_Port,
	encoder_Pins,
	button_Pin,
	API_Key
)

If your control wheel is reversed (Voxelab Aquila) change the encoder_pins to this instead.

#!/usr/bin/env python3
from dwinlcd import DWIN_LCD

encoder_Pins = (19, 26)
button_Pin = 13
LCD_COM_Port = '/dev/ttyAMA0'
API_Key = 'XXXXXX'

DWINLCD = DWIN_LCD(
	LCD_COM_Port,
	encoder_Pins,
	button_Pin,
	API_Key
)

Make run.py executable

sudo chmod +x run.py

Run with python3 ./run.py or './run.py' Your output should be:

DWIN handshake 
DWIN OK.
http://127.0.0.1:80
Waiting for connect to /tmp/klippy_uds

Connection.

Boot looks good
Testing Web-services
Web site exists

Press ctrl+c to exit run.py

Run at boot:

Note: Delay of 20s after boot to allow webservices to settal.

path of `run.sh` is expected to be `/home/pi/DWIN_T5UIC1_LCD_E3S1/run.sh`
path of `run.py` is expected to be `/home/pi/DWIN_T5UIC1_LCD_E3S1/run.py`

The run.sh script that is loaded by simpleLCD.service will re-run run.py on firmware restarts of the printe. If it fails to start for 5 times within 30 second it will exit and stop until the net boot. 

sudo chmod +x run.sh simpleLCD.service
sudo cp simpleLCD.service /lib/systemd/system/simpleLCD.service
sudo chmod 644 /lib/systemd/system/simpleLCD.service
sudo systemctl daemon-reload && sudo systemctl enable simpleLCD.service
sudo reboot

Your LCD should start after 30 seconds. And when you restart your printer firmware the LCD should restart as well.

Status:

Working:

Print Menu:

* List / Print jobs from OctoPrint / Moonraker
* Auto swiching from to Print Menu on job start / end.
* Display Print time, Progress, Temps, and Job name.
* Pause / Resume / Cancle Job
* Tune Menu: Print speed & Temps

Perpare Menu:

* Move / Jog toolhead
* Disable stepper
* Auto Home
* Z offset (PROBE_CALIBRATE)
* Preheat
* cooldown

Info Menu

* Shows printer info.

Notworking:

* Save / Loding Preheat setting, hardcode on start can be changed in menu but will not retane on restart.
* The Control: Motion Menu