When trying to run raspivid on Raspberry Pi OS Lite, you will see the following error message:
bash: raspivid: command not found
In recent versions of Raspberry Pi OS, raspivid has been replaced by libcamera-vid. Therefore, use libcamera-vid instead of raspivid.
First, install samba using
sudo apt -y install samba
then append the following to /etc/samba/smb.conf
[pi] comment = pi path = /home/pi writeable = yes browseable = yes public = yes create mask = 0644 directory mask = 0755 force user = pi
and finally restart samba:
sudo systemctl restart smbd
Now your /home/pi will be accessible via SMB (including write access).
sudo raspi-config -> 1 System options -> S5 Boot / auto-login -> Set to B2 Console Autologin
sudo apt -y install xserver-xorg xinit x11-xserver-utils matchbox-window-manager xautomation unclutter feh mkdir -p ~/kiosk-images sudo cat >~/kiosk.sh <<EOF #!/bin/sh xset -dpms xset s off xset s noblank matchbox-window-manager -use_titlebar no & unclutter & feh -Y -x -q -D 5 -B black -F -Z -z -r ~/kiosk-images EOF chmod a+x ~/kiosk.sh sudo cat >>~/.bashrc <<EOF # Kiosk xinit xinit ~/kiosk.sh -- vt$(fgconsole) EOF
~/kiosk-imagese.g. via scp or rsync
sudo reboot
Note: When logging in using SSH, the .bashrc hack (found originally at reelyactive) will cause xinit to run, with the message
/usr/lib/xorg/Xorg.wrap: Only console users are allowed to run the X server
appearing on screen and the console not opening. In that case, just type Ctrl+C to stop xinit and see the normal shell.
If you want to connect an USB device such as a 3D printer mainboard to your Raspberry Pi 4 using the USB-C connector as opposed to the larger USB-A connector, you need to first configure the Raspberry Pi kernel to use host mode for the USB-C connector.
sudo modprobe -r dwc2 && sudo dtoverlay dwc2 dr_mode=host && sudo modprobe dwc2
This method has the advantage of not requiring a reboot.
Edit /boot/config.txt and add
dtoverlay=dwc2,dr_mode=host
at the end of the file (in the [all] section). Then
reboot
In order to instal tailscale, on any Ubuntu version, you can use the official tailscale install command:
sudo apt -y install curl apt-transport-https curl -fsSL https://tailscale.com/install.sh | sh
libcamera-vid --width 1920 --height 1080 -f -t 10000000000
-t 10000000000 means to run for 10000000000 milliseconds (almost 4 months)
While trying to capture an image using raspistill, you see the following error message
ERROR: the system should be configured for the legacy camera stack
and no image is being produced
libcameraRecent versions of Raspbian use libcamera instead of the broadcom legacy camera API. You can capture an image using libcamera-still similarly to raspistill:
libcamera-still -o test.jpg
If you absolutely need raspistill specifically to work, you can still enable the legacy camera API using rpi-config:
sudo raspi-config
Go to:
and choose Yes to enable the legacy camera API.
On the Pi, run
libcamera-vid -t 0 --width 1920 --height 1080 --codec h264 --inline --listen -o tcp://0.0.0.0:8888
On the client, run
vlc tcp/h264://192.168.1.185:8888/
where 192.168.1.185 is the IP address of the Raspberry Pi.
The Raspberry Pi DSI display connector (for example the DSI display cable that comes with the Raspberry Pi 7″ display) has a pin pitch of 1.0mm:
Just use the official install command from the tailscale website:
curl -fsSL https://tailscale.com/install.sh | sh
First, mount the Raspberry Pi on top of the display PCB on the back of the display.
On the bottom (display) PCB, the silver contacts of the cable should be at the top (facing the Raspberry Pi):
On the Raspberry Pi, the silver contacts should face towards the USB connectors:
Overall, it should look like this:
First, install OctoPi to the SD card – for example, using rpi-imager: How to install OctoPi using rpi-imager
Open the boot partition on the OctoPi SD card and create a file wpa_supplicant.conf there, with the following content:
country=de
update_config=1
ctrl_interface=/var/run/wpa_supplicant
network={
scan_ssid=1
ssid="MyWifi"
psk="abc123abc"
}Always set the correct country code at the top ! If you don’t set it correctly, it won’t work!
Set ssid to the name of the wireless network.
Set psk to the wifi password.
First open rpi-imager:
then select Choose OS
Sroll down to Other specific-purpose OS (do not click on Other general-purpose OS, even though it sounds similar!)
Click on Other specific-purpose OS:
Now click on 3D printing:
Click on OctoPi:
Now click on OctoPi (stable):
Now click on Choose Storage to select the SD card you want to write the image to:
Click on the correct device to select it – double check to make sure you have selected the correct device !
Now click Write to download the image and write it to the SD card:
and now grab a coffee since it will take a couple of minutes to write:
The DSI display cable that comes with the Raspberry Pi 7″ display is 10cm (100mm) long:
The Rasbperry Pi DSI connector / cable has 15 pins:
Open the boot partition on the Rasbian SD card and create a file wpa_supplicant.conf there, with the following content:
country=de
update_config=1
ctrl_interface=/var/run/wpa_supplicant
network={
scan_ssid=1
ssid="MyWifi"
psk="abc123abc"
}Always set the country code at the top ! If you don’t set it correctly, it won’t work!
Set ssid to the name of the wireless network.
Set psk to the wifi password.
While trying to install rpi-imager using
sudo apt install rpi-imager
you see this error message:
Reading package lists... Done Building dependency tree Reading state information... Done No apt package "rpi-imager", but there is a snap with that name. Try "snap install rpi-imager" E: Unable to locate package rpi-imager
sudo apt -y install rpi-imager only works on Raspbian. On Ubuntu etc, you can install rpi-imager using
sudo snap install rpi-imager
Then start it using
rpi-imager
Quite simple. Just install it using
sudo apt-get install lirc
Update /boot/config.txt with dtoverlay=gpio-ir,gpio_pin=18
To use lirc in “default” mode (the default mode after installation is “devinput” mode) modify by sudo nano /etc/lirc/lirc_options.conf.
Change to driver = default
BTW: My first post on this blog 🙂
In order to hide all the boot messages (including the terminal) and the blinking cursor on the Raspberry Pi, edit /boot/cmdline.txt and first change
console=tty1
to
console=tty3
After that, add the following to the end of the line:
loglevel=3 quiet logo.nologo vt.global_cursor_default=0
Now you can reboot and enjoy the clutter-free experience.
When trying to extrude low-temperature filaments using OctoScreen, you will see this error message:
The temperature of the hotend is too low to extrude. Please increase the temperature and try again
By default, OctoScreen has a minimum extrusion temperature of 150°C which is fine for PLA, but for some low temperature materials you need to change the hardcoded value.
Note that setting you minimum extrusion temperature too low might damage or even destroy your extruder, if the material is not properly melted. So take caution in setting the correct value here.
Open utils/tools.go and edit this line:
const MIN_HOTEND_TEMPERATURE = 150
Just set your desired temperature and then recompile (see the OctoScreen README on how to do that)
Note that often the firmware (like Marlin) has a separate cold extrusion prevention limit, so you need to change the limit in both OctoScreen and the firmware. For Marlin, see How to disable Marlin cold extrusion prevention via G-Code.