I had seen a few examples on of the OctoPrint interface running on a 3.5in TFT display. I already had one of those screens, so I gave it a try.
I got it working, but found the touch display too small to really be of much use, so decided to jump to a larger version. Went with the official Raspberry Pi 7in TFT display. Here is an Amazon link.
There are plenty of enclosures available for this screen that also allow you to mount the Pi on the back, but I found some 3D printed plans that looked a bit nicer, and the fact that I could make my own with customized colors was a plus! Here is the link to the one I made, and some pictures of the assembly process.
Now that everything is put together, here is the step by step guide that I made to get everything up and running. I pieced this together from various sets "how-to" documentation, as they all seemed to not have all the info I needed, or missing some step that was causing the setup to not work for me.
OctoPi Setup with 7in PiTFT Touchscreen LCD
Part 1: Install & Setup OctoPi
- Download Image and burn to MicroSD Card using Win32 Disk Imager or Etcher
- Once image is burnt to card access the following files in the boot directory to modify configuration of the OctoPi
- Remove the "#" from the follwoing 3 lines, and add your network info
- Modify these settings for your specific webcam. These settings for for the Logitech C615
- Remove the "#" from the following line and change settings to match your camera
- Assemble the Raspberry Pi
- Insert MicroSD card into Pi, Connect TFT Display, Keyboard, and HDMI Display, then boot up device
- Once device boots up and launches the Console, enter default user credentials
- Username: pi
- Password: raspberry
- obtain IP address
- Enter the IP address found with ifconfig into your web browser to launch the OctoPrint web Interface
- Complete Setup Wizard on Web Interface and establish log-in credentials
- Username: XXXXXXXXX
- Password: XXXXXXXXX
- Import CURA slicing profile if desired, for the Prusa i3 MK2 I am using, head here:
- Install Plugins
- Settings > Plugin Manager
- Automatic Shutdown
- STL Viewer
- Add the Prusa i3 as the Default printer with the following parameters
- Settings > Serial Connection
- Serial Port > Auto (
- Baudrate > 115200
- Save Settings
- Verify WebCam feed is working
- Go to "Control" tab to verify you see the streaming image from your webcam
- Go to Settings > Webcam & Timelapse > Stream URL
- Use the "Test" button to verify everything is working properly
- Also test the "Snapshot URL"
- Save Settings
- Update the instance of OctoPi if update is available
- Reboot the system once update is complete
Part 2: Configure PiTFT Touchscreen LCD
- You may need to provide yourself root access first
- change root password to something you will remember
- To gain SuperUser access
- From the Command line, update the database of available software
- Once update is complete, shutdown system
- Power on sytem and verify the the Touchscreen is working and the display is the correct orientation
- If desired, access the Raspberry Pi Configuration screen and change the default password to something more secure
Part 3: Setup: Boot to Browser (for OctoPi or Jessie Light)
- **NOTE** This section will be easier to complete if you access your PI via SSH using Putty
- From the piTFT screen, enter in user credentials and elevate to SU if needed
- Enter this information into the file if using an offical Pi Touchscreen
- If using an HDMI display, chang to "fb1"
- Save and exit (CTR-O, Enter, and CTR-X)
- Allow X11 to run as anybody
- Copy Service File and Register
- Test Kernel
- If browser doesn't launch we need to upgrade the Kernel and the Chromium Install
- Only Do this if Launching Browser didn't work
- Update Chromium
- Update Kernel
- You may have to run the steps before updating Chromium and Kernel again for TouchUI to AutoBoot
- System should now boot automatically to the TouchUI web interface of OctoPrint
Part 4: Setup Remote Print Access
- Reserve (These steps are for my ASUS Router, but should be similar for most brands)
- From Router UI go to LAN > DHCP Server
- Reserve the desired Local IP address for the Raspberry Pi
- Head to WAN > Virtual Server / Port Forwarding
- Enable port forwarding for both OctoPrint and SSH
- Octoprint Port: 80
- SSH Port: 22
- Both will use the OctoPi's IP Address
- Set up your Dynamic DDNS
- Open the Console or SSH and type the following
- AfterAfter creating the folders for the DUC it is time to download the software.
- Within the Terminal window type the following. After each entry you will press “Enter”.
- Next navigate to the directory you created to locate the downloaded files.
- Now install the program
- After typing “sudo make install” you will be prompted to login with your No-IP account username and password.
- After logging into the DUC answer the questions to proceed. When asked how often you want the update to happen you must choose 5 or more. The interval is listed in minutes, if you choose 5 the update interval will be 5 minutes. If you choose 30 the interval will be 30 minutes.
- To confirm that the service is working properly you can run the following command.
- Must be a Capital "S"
- To ensure that it will run on Start Up
- Add the following below the "fi" line and above "exit 0"
- Save and exit the file
- Now check to see if the process is already running or not
- Upon reboot, it should run the service
- Setup / Upkeep
- Make sure passwords on all devices and routers are secure
- If you don't want to update the NoIP every month, pay $25 for an annual setup
Here is a video I put together showing the TouchUI in action along with a companion app for Android called "Printoid" that has a nicer UI, but still works off of OctoPrint.