RICOH SP 230SFNw Printer/Scanner Linux
It's a dream come true! This machine works out of the box on ubuntu 22.10 !
printing works, scanning works!
kralo
/ a_rico_sp230sfnw_printer_scanner_linux.md
Created
December 30, 2022 16:59
RICOH SP 230SFNw Printer/Scanner Linux
kralo
/ a_gpon_fiber_latency_ftth.md
Last active
March 6, 2023 08:17
FTTH GPON Latency and throughput in european residential home networks
View a_gpon_fiber_latency_ftth.md
Summary
Expect the following latencies to the "first hop":
ADSL 19 ms (depends on interleaving times)
VDSL50 24 ms (without Vectoring, no detail data in this report)
VDSL50 4 ms (with Vectoring)
GPON Fiber 1.5 ms (nearly the same in France & Germany)
COAX Docsis 7.5 ms (line is not stable unfortunately)
kralo
/ a_TetraControl_Live_Web_Callmonitor.md
Created
May 11, 2022 07:18
Live Callmonitor for Tetracontrol - Tetra Funkgespräche mit Details (in kleinem always-on-top Windows Fenster anzeigen geht mit Electron)
View a_TetraControl_Live_Web_Callmonitor.md
Live Tetra (Group-)Callmonitor für Tetracontrol
Hiermit lassen sich aktive Gespräche, die von TetraControl erfasst werden, live über Webtechnologien anzeigen.
Sehr hilfreich bei mehreren Funkkreisen und Arbeitsplätzen mit viel Bildschirmplatz, die ein kleines weiteres Fenster anzeigen können.
Es werden bis zu 4 Funkkreise unterstütz, mit Klick auf den blauen Text lassen die sich einfach verstecken/anzeigen.
kralo
/ a_reresolve-dns-windows-powershell.md
Created
December 14, 2021 20:47
Wireguard re-resolve dns script for dynamic endpoints (dyndns)
View a_reresolve-dns-windows-powershell.md
This is a script I use on windows for dynamic DNS endpoints ("servers").
The big upside is that it supports multiple configurations and does not need hard-coded endpoints or "ping-endpoints".
I have tested this in win7 and win10. You might add it to the task scheduler and run this every 3 minutes or so.
Some care has to be taken as to know which user is running the script. The encrypted dpapi-binary file can only be read by the same user that created/saved the tunnels, i.e. \system.
kralo
/ a_Wireguard_Windows_Client_Unprivileged.md
Created
September 10, 2021 09:22
wireguard client on windows unprivileged user restart tunnel
View a_Wireguard_Windows_Client_Unprivileged.md
Howto install wireguard as tunnel-Service when user is not local administrator.
See the setup .bat for setup. Key here is to set the service rights, so that anyone can restart the service.
See the restart script for how to restart. this is especially useful if the tunnel is "broken", because the peer is behind a dynamic dns service.
kralo
/ a_electron_auto-resize_window_to_content.md
Last active
August 15, 2021 18:16
electron_auto-resize_window_to_content
View a_electron_auto-resize_window_to_content.md
resize the electron app to match the content. Might be used for web-based Asterisk BLI-Pages or other unobstrusive notifications.
Window is always on top on Ubuntu/Windows
kralo
/ linux_v4l2-ctl_example_usage.txt
Created
January 26, 2021 13:52
Example usage how to get rough timing debug information
View linux_v4l2-ctl_example_usage.txt
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| $ v4l2-ctl --stream-mmap --stream-count=2 --verbose | |
| VIDIOC_QUERYCAP: ok | |
| VIDIOC_REQBUFS: ok | |
| VIDIOC_QUERYBUF: ok | |
| VIDIOC_QBUF: ok | |
| VIDIOC_QUERYBUF: ok | |
| VIDIOC_QBUF: ok | |
| VIDIOC_QUERYBUF: ok | |
| VIDIOC_QBUF: ok | |
| VIDIOC_QUERYBUF: ok |
kralo
/ a_raspberry-pi4-cmio-ov9281-dual.md
Last active
January 4, 2023 14:58
Raspberry Pi 4 CMIO with 2 ov9281 camera sensors
View a_raspberry-pi4-cmio-ov9281-dual.md
Raspberry Pi 4 CMIO with 2 ov9281 camera sensors
THIS HAS CHANGED!
Now, all you need to do is add the following lines to your /boot/config.txt:
dtoverlay=ov9281
dtoverlay=ov9281,cam0
kralo
/ lsusb-ov9281_camera.txt
Created
August 7, 2020 13:34
View lsusb-ov9281_camera.txt
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| # supposed to be CMT-120FPS-OV9281-C411 "Global Shutter, Black/White Image, 120FPS High Frame Rate, USB Camera Module with OV9281 sensor" | |
| # v4l2-ctl | |
| Driver Info (not using libv4l2): | |
| Driver name : uvcvideo | |
| Card type : USB Camera: USB Camera | |
| Bus info : usb-0000:00:1a.0-1.5 | |
| Driver version: 4.15.18 | |
| Capabilities : 0x84200001 | |
| Video Capture | |
| Streaming |
kralo
/ howto-securepointssl-nscerttype-error.md
Created
April 1, 2020 11:50
securepoint ssl client openvpn require nsCertType=SERVER
View howto-securepointssl-nscerttype-error.md
If you experience this error
VERIFY nsCertType ERROR: CN=server, require nsCertType=SERVER
try to update your Securepoint SSL VPN Client Version.
V. 2.0.18 did not work, V 2.0.28 did work.
Securepoint SSL Client 2.0.18 == not working
Try to start OpenVPN connection <redacted>
NewerOlder