I am running my 3D printer via DSF on a Raspberry PI. Its like Octoprint for RRF/Duet Boards. After a print is finished you can call the M81 command to poweroff the printer (Assuming you have installed the ATX Power Off). But this do not work on the PI. So found this Plugin: https://github.com/wilriker/execonmcode
This will parse the DSF for a specific M Command you can choose! The standard one is M7722.
It then runs whatever you want on the PI. For installing the plugin and installing it as a service i made some small YT Videos!
Due to the fact that the EXP1 and EXP2 Ports are used by the Wi-Fi Adapter it is not possible to connect a standard LCD to the SKR.
A Display is not needed to use the RepRapFirmware. You can start, configure etc everything via the web interface.
The display is an add-on and not mandatory! But if you want to have one, you have two options.
1.Using a TFT35 from Bigtreetech with a modified firmware 2.Using a PanelDue
I will show you how you can connect a PanelDue to the SKR Board. These are available quite cheap from aliexpress! Only drawback is, that you cannot print from SD card slot of the display!
Updating the firmware of the PanelDue. This ist pretty easy. Click here
Using the 4 Pin cable to connect to the SKR.
On the SKR you have 4 pins labeled TFT. On the underside of the board the pins are labeled with RST R0 T0 G 5V. We need ever pin except the RST.
On the PanelDue the 4 Pin Connector is labeled TXDRXD GND +5V
Now you have to be careful You have to connect the wires like this. (left Paneldue right SKR). I had to change the pins of the SKR side. For this you can press the little metal tab down and pull the wire out.
Now we have to add a line in config.g
M575 P1 S1 B57600
Save and reset the Board.
Now the display should work. If not got to Setup and change the baudrate to 57600 baud.
All SMD parts are solderd on by the factory! So no sketchy soldering by me ;)
The price seems quite high for such a simple board. But I can explain this.
Due to the COVID19 crisis I have to buy most of the parts directly in Germany. I also solder the most parts myself and test EVERY board with my SKR! I also preflashthe 8266 chip! In the end I do not make any money with this. My goal is to help the community out.