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by pfletch101
Tue Jun 09, 2020 2:05 pm
Forum: Automation, sensing and robotics
Topic: On-Grid Solar System - Kw Limiter with Auto Off/On System
Replies: 3
Views: 368

Re: On-Grid Solar System - Kw Limiter with Auto Off/On System

Hi there, I'm looking for some help regarding the conception of such system. Here's the story : A very large house has 20 KW of solar panel on the roof and is connected to the grid. There are no batteries, so the production is either consumed instantly or send to grid, passing through the supplier'...
by pfletch101
Tue Jun 09, 2020 1:23 pm
Forum: Troubleshooting
Topic: Multipath-tools install error
Replies: 3
Views: 272

Re: Multipath-tools install error

Did you execute:

Code: Select all

sudo apt update
sudo apt full-upgrade
immediately or within a short time before installing multipath-tools? Not doing this first can result in all sorts of odd problems when installing other software.
by pfletch101
Tue Jun 09, 2020 1:16 pm
Forum: Troubleshooting
Topic: Raspberry pi run startup python script cannot send HTTP requests
Replies: 3
Views: 200

Re: Raspberry pi run startup python script cannot send HTTP requests

How are you running the script at startup? If you are using cron and have not put in a delay, it is almost certainly running before the network is properly set up and initialized, which typically takes a long time by computer standards (a second to a few seconds). The quick and dirty fix is to have ...
by pfletch101
Mon Jun 08, 2020 6:28 pm
Forum: General discussion
Topic: Future of Raspberry Pi
Replies: 37
Views: 2756

Re: Future of Raspberry Pi

The RPI computer is not exactly user friendly, because the RPI computer uses a Linux OS. I beg to differ. Operating systems like Win 10 are user unfriendly. The user cannot adapt them easily to what the user wants. Updates are controlled by the operating systems owner. Yes, you do not own an operat...
by pfletch101
Fri Jun 05, 2020 9:00 pm
Forum: Advanced users
Topic: Custome Install Script
Replies: 1
Views: 210

Re: Custome Install Script

Hi I use my pi(s) headless. Is there a way I can run a script to do this. As I need to install all this everytime I reinstall. sudo apt-get update && sudo apt-get upgrade -y sudo apt-get install apache2 -y sudo apt-get install php -y sudo apt-get install mariadb-server sudo mysql -u root -p CREATE ...
by pfletch101
Tue Jun 02, 2020 8:50 pm
Forum: General discussion
Topic: How do I properly eject a USB SD Card adapter?
Replies: 13
Views: 741

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

I always use the New Partition UUIDs option, but I still don't see the Ejecter after a copy. However I can use the file manager to eject the cloned card or drive ( as I mentioned in my earlier post ). If you don't use the New Partition UUIDs option, you also can't see the written SD in File Manager...
by pfletch101
Tue Jun 02, 2020 5:48 pm
Forum: General discussion
Topic: How do I properly eject a USB SD Card adapter?
Replies: 13
Views: 741

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

II think I understand what is going on, and why people have been saying different things about what does and doesn't work. I use SD Card Copier predominantly to make backups, so I almost always leave the 'New Partition UUIDs' box unchecked. The issue I have described occurs under those circumstances...
by pfletch101
Tue Jun 02, 2020 2:38 pm
Forum: General discussion
Topic: Question about the Cameras
Replies: 4
Views: 253

Re: Question about the Cameras

It is not totally clear what you mean by "superimposing' the images. I assume that the object you are imaging is changing and/or moving very slowly indeed). If you are simply trying to see the movement, the easiest way would seem to be to link the images together into a movie, which any decent deskt...
by pfletch101
Tue Jun 02, 2020 1:48 pm
Forum: General discussion
Topic: How do I properly eject a USB SD Card adapter?
Replies: 13
Views: 741

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

The ejecter wasn't there until I added it on either of my (32 bit and 64 bit) installations. It defaults to being visible all the time - disappearing unless there is a device to eject is an option. It is installed by default on desktop versions of both Raspbian Buster and Raspberry Pi OS, but is se...
by pfletch101
Tue Jun 02, 2020 2:16 am
Forum: General discussion
Topic: How do I properly eject a USB SD Card adapter?
Replies: 13
Views: 741

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: STICKY: Raspberry Pi OS (64 bit) beta test version feedback
Replies: 371
Views: 69061

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: 13
Views: 741

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: 13
Views: 741

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: 13
Views: 741

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: 127

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: STICKY: Raspberry Pi OS (64 bit) beta test version feedback
Replies: 371
Views: 69061

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: STICKY: Raspberry Pi OS (64 bit) beta test version feedback
Replies: 371
Views: 69061

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: STICKY: Raspberry Pi OS (64 bit) beta test version feedback
Replies: 371
Views: 69061

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: STICKY: Raspberry Pi OS (64 bit) beta test version feedback
Replies: 371
Views: 69061

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: 178

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: 596
Views: 326688

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: 856

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: 1734

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: 402

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: 451

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...

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