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by rpdom
Mon Sep 02, 2019 6:08 pm
Forum: Automation, sensing and robotics
Topic: 12 V step motor overheated with ULN2003 controller
Replies: 18
Views: 621

Re: 12 V step motor overheated with ULN2003 controller

why do I need a ground? isn't' the current passing from the + to the - pole, the latter being the ground? Anyway, how would I do that? Tx The main current is passing from the +ve to what you call the -ve pole (more correctly known as 0v or ground), but what of the drive voltage from the Pi? Where d...
by rpdom
Mon Sep 02, 2019 6:03 pm
Forum: Raspbian
Topic: Is the B+ too old for Raspian?
Replies: 12
Views: 477

Re: Is the B+ too old for Raspian?

Ah, well that's what capturing the partitions is for. That doesn't account for the boot sector though, does it? Boot sector? There is no boot sector for the Pi. There is the MBR/partition table, the /boot partition and the / partition. That is it. Even the MBR is unused apart from the partition inf...
by rpdom
Mon Sep 02, 2019 1:55 pm
Forum: Graphics, sound and multimedia
Topic: GIANT UPDATE: Build FFmpeg and mpv – Automatically in 54 Minutes!
Replies: 222
Views: 102319

Re: GIANT UPDATE: Build FFmpeg and mpv – Automatically in 54 Minutes!

Users were explicitly told to watch the first couple minutes to make sure the initial downloads worked. You obviously feel that's an excessive burden for a free script from a volunteer. I disagree. Yes. I consider it lazy scripting. Consider if you will that pretty much all the Debian based softwar...
by rpdom
Mon Sep 02, 2019 1:49 pm
Forum: General discussion
Topic: reset a frozen system remotely
Replies: 14
Views: 450

Re: reset a frozen system remotely

Yes, you do need to enable it in the first place, but once enabled it will just keep running in hardware.

The only thing the Linux driver needs to do after that is keep poking it to say "I'm not dead yet". When the doggie fails to get that message in a reasonable time it will force a reset.
by rpdom
Mon Sep 02, 2019 1:43 pm
Forum: Beginners
Topic: Nginx + mail server
Replies: 35
Views: 809

Re: Nginx + mail server

I was looking for a solution to host my own mail server rpdom so what you posted sounds like the right solution for me. what commands did you run? It would be difficult to give a simple list of commands, as it took me a while to get the server set up and put live before I was happy with it. Well, m...
by rpdom
Mon Sep 02, 2019 1:09 pm
Forum: General discussion
Topic: reset a frozen system remotely
Replies: 14
Views: 450

Re: reset a frozen system remotely

Though rare, a software watchdog can hang so if the machine is that critical then look to a zero SD card Linux and an external watchdog board. There are many on Tindie and from the normal suppliers. The Pi's Watchdog is hardware. The software resets the watchdog on a regular basis. If the watchdog ...
by rpdom
Mon Sep 02, 2019 9:23 am
Forum: Graphics, sound and multimedia
Topic: GIANT UPDATE: Build FFmpeg and mpv – Automatically in 54 Minutes!
Replies: 222
Views: 102319

Re: GIANT UPDATE: Build FFmpeg and mpv – Automatically in 54 Minutes!

So again it all boils down to you can't be bothered to write a proper script and you will always blame the user when something you write doesn't do it's job properly. This is absurd! You are correct there. The script should recognise that a command has failed and stop. It should alert the user as t...
by rpdom
Mon Sep 02, 2019 9:15 am
Forum: Beginners
Topic: Where could I get a case for an older Raspberry Pi please?
Replies: 18
Views: 336

Re: Where could I get a case for an older Raspberry Pi please?

I have a reasonable spare case for that model which you can have for the cost of postage. It depends where in the world you are.
by rpdom
Mon Sep 02, 2019 8:08 am
Forum: General discussion
Topic: Raspberry Pi Security
Replies: 27
Views: 1013

Re: Raspberry Pi Security

As far as I can tell, in regards to running OpenSSH on the Raspberry Pi, the single best mitigation tactic is to use SSH key-based or SSH-certificate based logins with password authentication disabled. Most bots seem to be able to determine this and back off on first contact, regardless of which po...
by rpdom
Mon Sep 02, 2019 7:58 am
Forum: Beginners
Topic: Nginx + mail server
Replies: 35
Views: 809

Re: Nginx + mail server

Since most of us don't want to run a full scale mail server we don't run our own server that's connected to the public internet (it's hard work as you have to fight spam). Postfix can run that way, best of luck if you try that. So we use a mail relay at our ISP (and they fight the spam). I don't tr...
by rpdom
Mon Sep 02, 2019 6:29 am
Forum: Graphics, sound and multimedia
Topic: GIANT UPDATE: Build FFmpeg and mpv – Automatically in 54 Minutes!
Replies: 222
Views: 102319

Re: GIANT UPDATE: Build FFmpeg and mpv – Automatically in 54 Minutes!

Yes, there's no problem with checkinstall — if apt actually downloads it. But sometimes the mirrors aren't working and apt can't find them. What then? Make it the fault of the user? As you'll see below, your comment reveals that you didn't even read my instructions — because I explicitly addressed ...
by rpdom
Sun Sep 01, 2019 9:01 pm
Forum: Off topic discussion
Topic: [Solved] Very busy today?
Replies: 23
Views: 1443

Re: Very busy today?

Yes, I've been getting a few of those too for the last couple of days.
by rpdom
Sun Sep 01, 2019 8:37 pm
Forum: Graphics, sound and multimedia
Topic: GIANT UPDATE: Build FFmpeg and mpv – Automatically in 54 Minutes!
Replies: 222
Views: 102319

Re: GIANT UPDATE: Build FFmpeg and mpv – Automatically in 54 Minutes!

Well, obviously your script does not work..... Unfortunately for you, your words were automatically nullified before you even wrote them! Sadly for you one day you will realise that the world does not revolve around you and your basic scripting abilities. Try writing real code that can't cope with ...
by rpdom
Sun Sep 01, 2019 7:58 pm
Forum: Graphics, sound and multimedia
Topic: [UPDATE] Kodi 18.4 Leia for Raspberry Pi 4
Replies: 164
Views: 20402

Re: Kodi 18.3 Leia for Raspberry Pi 4

innocent_bystander wrote:
Sun Sep 01, 2019 7:23 pm
To everyone saying thank you -- and those who meant to, but fogot ;) -- you are very welcome, and as the motto of the Sirius Cybernetics Corporation goes (see my signature) "Share and enjoy."
Until it sank halfway in to the ground :lol:
by rpdom
Sun Sep 01, 2019 7:02 pm
Forum: Raspbian
Topic: how go back to stretch 9.5
Replies: 6
Views: 206

Re: how go back to stretch 9.5

thatchunkylad198966 wrote:
Sun Sep 01, 2019 4:44 pm
As above but also note; you may need to stop certain packages from updating/upgrading.
I'm still running Stretch 9.5 with kernel 4.14 on a Pi Zero W because of WiFi problems with buster.
What problems? I'm running two Pi Zero Ws on a fully updated Buster with no issues.
by rpdom
Sun Sep 01, 2019 6:51 pm
Forum: Troubleshooting
Topic: SHA256 hash on the website doesn't match the IMG file
Replies: 5
Views: 174

Re: SHA256 hash on the website doesn't match the IMG file

The checksums are for the Zip file, not the unzipped image file. 🤦🏻‍♂️ Thanks! This is one of the world's great mysteries and it's no surprise that you picked the wrong option. sha256 summing the zip file just doesn't make much sense and the RPF folks have never explained why they've done it that w...
by rpdom
Sun Sep 01, 2019 6:46 pm
Forum: Graphics, sound and multimedia
Topic: GIANT UPDATE: Build FFmpeg and mpv – Automatically in 54 Minutes!
Replies: 222
Views: 102319

Re: GIANT UPDATE: Build FFmpeg and mpv – Automatically in 54 Minutes!

I've been VERY busy for the past several weeks with other projects unrelated to the Raspberry Irrelevant. The only "mistake" is with (1) your internet connection and/or (2) a temporary problem with the external download servers and/or (3) your system being "messed up" and/or (4) not following my in...
by rpdom
Sun Sep 01, 2019 4:11 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: USB keyboard controller and pi zero
Replies: 3
Views: 213

Re: USB keyboard controller and pi zero

If you need to handle more than a few keys you would be better off sorting out the Pi Zero in gadget mode to emulate a USB keyboard. There are some good instructions on how to do that.
by rpdom
Sun Sep 01, 2019 4:09 pm
Forum: Raspbian
Topic: how go back to stretch 9.5
Replies: 6
Views: 206

Re: how go back to stretch 9.5

All the old images are stored on http://downloads.raspberrypi.org/

Poke around a bit and you'll find the download you want.
by rpdom
Sun Sep 01, 2019 3:59 pm
Forum: Troubleshooting
Topic: Pi 2B crashes after cron.hourly
Replies: 3
Views: 115

Re: Pi zero crashes after cron.hourly

I have similar phenomenon but with a Raspberry 2B: Hi, Firstly your problem is almost certainly not related to the original poster's issue, as that was resolved with a software upgrade. Therefore you should post as a new problem, giving as much detail as you can, especially any extra software you h...
by rpdom
Sun Sep 01, 2019 12:07 pm
Forum: General discussion
Topic: Broken Pi 3 B+ ?
Replies: 4
Views: 162

Re: Broken Pi 3 B+

It's an inductor. Part of the power supply circuit. I'm not sure which one it is, but it is one of those shown in the top right of the partial schematics here https://www.raspberrypi.org/documentati ... educed.pdf
by rpdom
Sun Sep 01, 2019 12:20 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: USB keyboard controller and pi zero
Replies: 3
Views: 213

Re: USB keyboard controller and pi zero

You can't connect the keyboard contacts directly to the GPIO pins on the Pi because the voltages won't match and you could destroy the Pi. What you can do is to have the Pi drive a number of opto-isolators which will trigger the keys you need. This is simple if you only want a few keys, but much mor...
by rpdom
Sat Aug 31, 2019 7:17 pm
Forum: Automation, sensing and robotics
Topic: Dust collection automation 20A circuit
Replies: 17
Views: 524

Re: Dust collection automation 20A circuit

It may have been a little harsh but I would consider it fair. No one wants to see you come to harm and, when playing with mains, that's a serious possibility if something is not done right. It is fair. I would even go so far as to suggest that any post that mentions controlling mains voltage withou...
by rpdom
Sat Aug 31, 2019 12:57 pm
Forum: General discussion
Topic: Raspberry Pi Security
Replies: 27
Views: 1013

Re: Raspberry Pi Security

The compute module and I/O board aren't really meant to work together as a finished product. Instead the IO board is for you to test your ideas on before you design and mass produce your own carrier boards. With the IO board, the compute module's on-board memory can be accessed via USB and changed t...
by rpdom
Sat Aug 31, 2019 10:58 am
Forum: Beginners
Topic: Nginx + mail server
Replies: 35
Views: 809

Re: Nginx + mail server

You don't have port 25 or 587 open for incoming email, do you? Yes, I do. So how are you filtering spam? Is Spamassassin any good these days? What spam? One of the advantages of having a private mailserver on a private domain that isn't advertised anywhere is that I don't get any. If I did I'd cons...

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