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by pfletch101
Tue Jun 02, 2020 2:16 am
Forum: General discussion
Topic: How do I properly eject a USB SD Card adapter?
Replies: 7
Views: 200

Re: How do I properly eject a USB SD Card adapter?

The 'ejecter' is not there by default, The Ejecter IS there, but it's set to only show when a drive needs it (when there is an ejectable drive present). You can change that setting in its preferences. The ejecter wasn't there until I added it on either of my (32 bit and 64 bit) installations. It de...
by pfletch101
Tue Jun 02, 2020 2:12 am
Forum: General discussion
Topic: Raspberry Pi OS (64 bit) beta test version
Replies: 71
Views: 3686

Re: Raspberry Pi OS (64 bit) beta test version

person1729 wrote:
Mon Jun 01, 2020 9:53 pm
I think it may not be unloading services and halting them, try

Code: Select all

sudo shutdown -h now
It is the command line version that is taking the normal time, I don't believe that the GUI version is taking longer because it is 'doing things properly'.
by pfletch101
Mon Jun 01, 2020 9:11 pm
Forum: General discussion
Topic: How do I properly eject a USB SD Card adapter?
Replies: 7
Views: 200

Re: How do I properly eject a USB SD Card adapter?

There should be an "eject" symbol (Triangle with a line under it) on the right of the Task Bar at the top of the screen. Click on that. The 'ejecter' is not there by default, but even after adding it to the taskbar, it doesn't seem to do anything - this may be a 64-bit problem, and I will check it ...
by pfletch101
Mon Jun 01, 2020 9:05 pm
Forum: General discussion
Topic: How do I properly eject a USB SD Card adapter?
Replies: 7
Views: 200

Re: How do I properly eject a USB SD Card adapter?

sudo apt install eject sudo eject /dev/sdb FWIW, eject now appears to be part of standard RasPiOS (or at least of the 64-bit version, which I am trying out), so you don't need to install it, and I had failed to use 'sudo' when I first tried it. Using 'sudo', it does seem to work (the light on the a...
by pfletch101
Mon Jun 01, 2020 8:14 pm
Forum: General discussion
Topic: How do I properly eject a USB SD Card adapter?
Replies: 7
Views: 200

How do I properly eject a USB SD Card adapter?

After using SD Card Copier to copy my working system to a spare SD card for backup, I need to remove the adapter and card. If I simply pull it out, I get a message on the GUI that says: "Drive was removed without ejecting; please use menu to eject before removal". What menu??!! I have looked in the ...
by pfletch101
Mon Jun 01, 2020 7:37 pm
Forum: Troubleshooting
Topic: Avoiding WIFI Problems with a Headless Set-up on First Boot
Replies: 1
Views: 46

Re: Avoiding WIFI Problems with a Headless Set-up on First Boot

I'm not sure that this (requirement for Unix text format for configuration files) is true. I have set up a number of my Pis for initial headless boot and used a Windows text editor (EmEditor) to create the wpa_supplicant.conf file without problems. EmEditor can, as it happens, be set up to use Unix ...
by pfletch101
Mon Jun 01, 2020 1:39 pm
Forum: General discussion
Topic: Raspberry Pi OS (64 bit) beta test version
Replies: 71
Views: 3686

Re: Raspberry Pi OS (64 bit) beta test version

An oddity, rather than a serious bug: I now have the 64 bit OS running headless on a Pi 4, using the x11vnc server and the RealVNC client on my W10 machine to control it. No non-system software is currently installed or active. If I give the 'sudo shutdown now' command from the CLI, the Pi shuts dow...
by pfletch101
Sun May 31, 2020 11:37 pm
Forum: General discussion
Topic: Raspberry Pi OS (64 bit) beta test version
Replies: 71
Views: 3686

Re: Raspberry Pi OS (64 bit) beta test version

person1729 wrote:
Sun May 31, 2020 11:15 pm
I found the solution to be to use x11vnc instead, as tightvnc starts a new desktop. This guide worked for me: https://github.com/raspberrypi/Raspberr ... -636544190
Does this also require that you use a different (from RealVNC) viewer on the PC end?
by pfletch101
Sun May 31, 2020 10:58 pm
Forum: General discussion
Topic: Raspberry Pi OS (64 bit) beta test version
Replies: 71
Views: 3686

Re: Raspberry Pi OS (64 bit) beta test version

To install VNC SErver go to this forum https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-vnc-on-ubuntu-18-04 I know it says Ubuntu but it worked in raspbian It will make raspbian look like xfce4 It's still raspbian just with different desktop environment These instructio...
by pfletch101
Sun May 31, 2020 9:34 pm
Forum: General discussion
Topic: Raspberry Pi OS (64 bit) beta test version
Replies: 71
Views: 3686

Re: Raspberry Pi OS (64 bit) beta test version

In general, yes. In the specific case of VNC Server, not yet. libraspberrypi0 was never set up to support multiarch and getting it working would require breaking things, which I'd like to avoid. My current plan is to leave the armhf version of libraspberrypi0 as is and treat it as a legacy support ...
by pfletch101
Wed May 27, 2020 4:20 pm
Forum: Troubleshooting
Topic: Pi 3B constantly pausing and halting - not responding
Replies: 3
Views: 89

Re: Pi 3B constantly pausing and halting - not responding

What are you using to power the Pi. Flaky power would be my #1 bet for these symptoms.
by pfletch101
Wed May 27, 2020 3:28 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 581
Views: 286725

Re: Raspberry Pi 4 temperature

Without fan : start at 41°c, average 75°c, some spike do 79° with case+fan (5V) : start 33°c, average 35°c, max 43°c (metric took every 15Sec) Case : temp.png RPI 4b4G v1.1 : So the conclusion is you don't need the case and fan? Insufficient data, but my conclusion would be that the case and fan ar...
by pfletch101
Thu Apr 02, 2020 1:07 am
Forum: General discussion
Topic: Rpi 3B+: how cold can it still opperate?
Replies: 21
Views: 583

Re: Rpi 3B+: how cold can it still opperate?

For the OP...doubt you're going to have a thermal problem with the Pi. You'll be out of spec, so not relying on a given board until you've tested it would be a really good idea. If you can position the Pi so it's on the house-facing side of the generator, it'll probably be a bit warmer than on the ...
by pfletch101
Thu Apr 02, 2020 12:48 am
Forum: General discussion
Topic: Other projects: subcategories?
Replies: 38
Views: 1400

Re: Other projects: subcategories?

In this small green, wet, flat island we don't get seismology events so it would be a non-starter. Seismology should go in Automation, sensing & robotics https://www.raspberrypi.org/forums/viewforum.php?f=37 Not strictly true. There was an earthquake in East Anglia in 2008 which woke me (I was livi...
by pfletch101
Thu Apr 02, 2020 12:37 am
Forum: General discussion
Topic: How to turn off daylight savings time (Standard Time)
Replies: 7
Views: 319

Re: How to turn off daylight savings time (Standard Time)

For most computer data timing purposes, it is best to use and record UTC time and convert it to local time only if needed for display. This almost totally avoids the many problems introduced by the switches to and from DST in the States and Countries that use it.
by pfletch101
Mon Mar 30, 2020 8:44 pm
Forum: Troubleshooting
Topic: Linux autostart issue
Replies: 9
Views: 289

Re: Linux autostart issue

When I use Grafana, it takes exact the same time the start of my program needs to visualise the data. During my program tryes to start, Grafana showes "no data" and in the same moment the program runs constant, Grafa show the data. Which is a nother indication of my guess that the Influx Database n...
by pfletch101
Mon Mar 30, 2020 2:45 pm
Forum: Troubleshooting
Topic: Linux autostart issue
Replies: 9
Views: 289

Re: Linux autostart issue

... systemd-analyze will tell you far more than you would ever want to know about this! :) The man pages are quite helpful, but you might want to start with systemd-analyze critical-path [your service name] The critical-path comand returns: [email protected]:~ $ systemd-analyze critical-path [GPS] Unk...
by pfletch101
Sat Mar 28, 2020 10:06 pm
Forum: Troubleshooting
Topic: Linux autostart issue
Replies: 9
Views: 289

Re: Linux autostart issue

Have you tried putting a sleep(60) (1 minute delay chosen arbitrarily) at the beginning of the script. If it runs solidly if you do that and everything works, you have solved your acute problem, and can find out exactly what is causing the trouble at your leisure. You say that it crashes when it tr...
by pfletch101
Sat Mar 28, 2020 6:57 pm
Forum: Troubleshooting
Topic: Linux autostart issue
Replies: 9
Views: 289

Re: Linux autostart issue

Still same problem with network-online.target. Have you tried putting a sleep(60) (1 minute delay chosen arbitrarily) at the beginning of the script. If it runs solidly if you do that and everything works, you have solved your acute problem, and can find out exactly what is causing the trouble at y...
by pfletch101
Sat Mar 28, 2020 4:46 pm
Forum: Troubleshooting
Topic: Linux autostart issue
Replies: 9
Views: 289

Re: Linux autostart issue

[Unit] Description=GPS Service After=network.target After=influxdb.service #After=influxdb [Service] Type=simple ExecStart=python3 /prog/GPS_main_V1.py Restart=on-failure [Install] WantedBy=multi-user.target You may want to try replacing your first 'After' with After=network-online.target 'network....
by pfletch101
Mon Mar 23, 2020 12:52 am
Forum: Beginners
Topic: GPU/CPU temperature limit for RPI3
Replies: 26
Views: 6800

Re: GPU/CPU temperature limit for RPI3

rpdom wrote:
Fri Mar 20, 2020 6:47 pm
It will slow down until the temperature drops to a safer level, then speed up again.
What if the ambient temperature is above the temperature that the control system regards as 'safer'?
by pfletch101
Mon Mar 23, 2020 12:35 am
Forum: General discussion
Topic: Set static IPv6 address on Raspbian Buster
Replies: 11
Views: 531

Re: Set static IPv6 address on Raspbian Buster

Hello, how do I set a static IPv6 address on my Raspberry with Raspbian 10 Buster ? Thanks Others have answered your question, but you may be better advised to have your router assign the Pi a 'fixed' IP address. Assigning a networked device a fixed IP address 'locally' can lead to all sorts of pro...
by pfletch101
Thu Mar 19, 2020 7:54 pm
Forum: Networking and servers
Topic: Wireless temperature detection system
Replies: 2
Views: 213

Re: Wireless temperature detection system

Please place code within [ code][ /code] (omitting the spaces) tags, and ensure that indentation is maintained. Without this, your code is almost completely unreadable.
by pfletch101
Mon Mar 16, 2020 12:49 am
Forum: Beginners
Topic: Can a python script edit itself?
Replies: 2
Views: 235

Re: Can a python script edit itself?

As garvan says, it can be done without too much difficulty, but the currently executing copy of the code is unaffected. A more usual way of modifying the behavior of a running script is an appropriate conditional within the script! :) Of course, If you have a script that is scheduled to run periodic...
by pfletch101
Mon Mar 16, 2020 12:41 am
Forum: Beginners
Topic: Python script results in webpage
Replies: 1
Views: 144

Re: Python script results in webpage

This does sound like a good use for a database, which would also allow you to pull historical data if you wished. I would create a SQLite database with a single table with a field for the timestamp and a field for each of the data items you are reading in. Modify your script to save the data to the ...

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