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January 11 2022 Korganizer, backups, Konqueror, Jellyfin, ad-silence, Thingyverse

Posted by John R Hudson ( 6 minute read )

Darren had been having problems with Kontact and was unable to use the Calendar; John suggested he locate the Korganizer std.ics file which can be opened in other calendar programs. John had done something similar when there were problems some years ago with Kontact.

John went on to share a script for backing up mysql/mariadb databases:

December 14 2021 Quiz, mqcontrol, NextCloud backups, Redis

Posted by John R Hudson ( 10 minute read )

John presented a short quiz to mark 30 years of Linux:

  1. On which teaching tool did Linus Torvalds base his original operating system?
  2. Which is the longest continuously available Linux distribution?
  3. Which company gave its software away and told customers they could pay for support?
  4. What does Debian stand for?
  5. For which processor did Linus Torvalds rewrite Linux?
  6. Which company did Sun buy because it was cheaper than licensing Microsoft Office?
  7. Why was the Gnome desktop created?
  8. When was Ubuntu first issued?
  9. Apart from the Linux kernel, what other programs has Linus Torvalds created?
  10. Which software does Android use instead of the GNU utilities?
  11. Which is the most widely used database software in the world?

November 9 2021 Review, Home Assistant, SMARTY, TV websites

Posted by John R Hudson ( 3 minute read )

Darren reported that his DVD drive door opens whenever the machine is returning from sleep; a couple of suggestions were made: that he checks the BIOS firmware and that he checks the boot order to see if the DVD is selected prior to the hard drive.

He is continuing to explore Picroft.

He showed a Bluetooth speaker he had acquired to amplify smartphone audio.

October 12 2021 AI, Jupyter, ELIZA, Node-RED

Posted by John R Hudson ( 3 minute read )

Darren began by sharing what he had been looking at in machine learning and AI: Siri/Alexa/Picroft and a number of personal projects including

  • MENACE (Matchbox Educable Noughts and Crosses Engine)
  • draughts
  • NIM (see this PDF)
  • Jupyter notebooks, formerly IPython Notebooks, a web-based interactive environment for creating notebook documents; it is a bit like Zim in that you can import images, run programs, etc.

September 14 2021 Booting Raspberry Pi from a USB drive, cal

Posted by John R Hudson ( 3 minute read )

As no-one apart from Brian had brought anything to share, the conversation roamed across a range of non-computing topics.

Brian had however solved the problem he had had over booting a Raspberry Pi from a USB drive.

August 10 2021 Aladin, page layout, setxkbmap, Apache Bench, Met Office Datapoint

Posted by John R Hudson ( 6 minute read )

David shared the rather underwhelming photo of BepiColumbo skimming past Venus.

Bernard shared some more of his work for the Astronomy centre, focusing on the Aladin client. One of the problems in astronomy is determining a zero point from which coordinates can be calculated. Traditionally the zero point had been determined as the equinox but it is now determined by using a catalogue of distant objects which are apparently stationary but whose positions can be determined. This has led to a formal definition of the International Celestial Reference System (ICRS) which the Python package astropy will convert by using a website which gives the earth’s position at present.

July 13 2021 Raspberry Pi, AWK, Perl, Python, HTML, W3.CSS, Windows 11

Posted by John R Hudson ( 7 minute read )

Brian had been caught in Covid-19 related travel problems and was having to join us using his Raspberry Pi tethered to his smartphone to create an Ethernet connection. He commented that he was able to use iView Australia without any problems.

June 8 2021 get_iplayer, Home Assistant, MariaDB, desktop options

Posted by John R Hudson ( 6 minute read )

Brian asked about people’s experience of get_iplayer and John said that you needed to keep up with the latest version, which Brian had, but John had had no problems with it except when he had not updated it recently.

Brian then expanded on how he had added Node_RED to Home Assistant demonstrating how he could add a gauge by pulling elements from the left hand column. However, he had had difficulty getting Home Assistant to connect to the Internet.

April 13 2021 Wireshark, adb, Cordova, MariaDB authentication

Posted by John R Hudson ( 7 minute read )

Brian showed a device he had which measures particulates, in particular the PM2.5 particulates which are particularly dangerous. They had recently experienced sand being blown onshore from the Sahara but there had been none of usual cases of people being affected by the sand particles because people were wearing masks because of the pandemic. Bernard said that he had once experienced sand particles on snow when skiing; when snow later fell on the sand, it turned orange.