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by rpdom
Wed Sep 04, 2019 10:06 am
Forum: Beginners
Topic: How can I get the latest version of MariaDB?
Replies: 19
Views: 444

Re: How can I get the latest version of MariaDB?

You could add the Buster repos to your Stretch system. Run sudo apt update; sudo apt install --reinstall mariadb* . Then revert the sources.list and sources.list.d changes. Or add the Buster repo and apt pin it to low priority. That way only Stretch packages will be installed unless you specificall...
by rpdom
Wed Sep 04, 2019 9:55 am
Forum: Beginners
Topic: How can I get the latest version of MariaDB?
Replies: 19
Views: 444

Re: How can I get the latest version of MariaDB?

It may be possible to upgrade MariaDB, as I said previously, as long as you don't mind some elements of Buster being installed. It doesn't require a full upgrade.
by rpdom
Wed Sep 04, 2019 9:35 am
Forum: Beginners
Topic: Raspberry Pi ** Sold over 25million units **
Replies: 19
Views: 687

Re: Raspberry Pi ** Sold over 25million units **

boyoh wrote:
Wed Sep 04, 2019 9:00 am
What will the end product be 25million programmers, 5.000 Electronics Engineers
Well, the aim of the Pi is to encourage programmers (except they call it "coding" now).. Maybe not 25 million, but tens of thousands would be good.
by rpdom
Tue Sep 03, 2019 10:29 pm
Forum: Beginners
Topic: Where could I get a case for an older Raspberry Pi please?
Replies: 18
Views: 331

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

Hello all, and thanks for the replies. Apologies for the delay in replying. My mistake then, I believed it to be a Pi 2, hence why the cases looked incompatible. I am based in the UK, so I guess, rpdom (as you replied first), I shall take you up on your offer. Please let me know how I go about gett...
by rpdom
Tue Sep 03, 2019 10:14 pm
Forum: General discussion
Topic: How to INSTALL Linux onto a Raspberry 4?
Replies: 20
Views: 892

Re: How to INSTALL Linux onto a Raspberry 4?

I was wondering about this earlier, purely as an intellectual exercise. If they present as USB mass-storage, surely you could just drop a traditional partition table on the front, a FAT32 filesystem for /boot (with a suitable kernel and installation initrd), and be done with it? Utterly nonstandard...
by rpdom
Tue Sep 03, 2019 7:43 pm
Forum: Beginners
Topic: Complete beginner - Garage Door Dedection
Replies: 12
Views: 401

Re: Complete beginner - Garage Door Dedection

Sitting in your office .then you receive a e-mail Saying your garage door is open. Can you close The door from your office, IF not what is the Point of your project , More thought is to go Into this project. Regards BoyOh That is close to a project I had been working one (but then other things over...
by rpdom
Tue Sep 03, 2019 5:38 pm
Forum: Beginners
Topic: How can I get the latest version of MariaDB?
Replies: 19
Views: 444

Re: How can I get the latest version of MariaDB?

It might be possible to install the Buster version of MariaDB server under Stretch, but it depends on the dependencies. Running a mixed system can also cause poblems.
by rpdom
Tue Sep 03, 2019 10:47 am
Forum: Device Tree
Topic: Using two audio devices in device tree
Replies: 3
Views: 170

Re: Using two audio devices in device tree

You can have many i2c devices as long as they have different addresses. There are around 126 addresses available on each i2c bus. To check if you have an address conflict, try connecting just one board at a time and run i2cdetect -y 1 You will get output similar to this 0 1 2 3 4 5 6 7 8 9 a b c d e...
by rpdom
Tue Sep 03, 2019 7:47 am
Forum: Beginners
Topic: Can I set video mode to av on Pi model 1
Replies: 12
Views: 348

Re: Can I set video mode to av on Pi model 1

Well, the Pi 1 didn't have an AV jack, just an audio jack and separate video Phono/RCS connection.

The Pi 1B+ and A+ had the combined AV jack that all Pis (except the Zero) have had since.

The same cables will work in all of them though, but the Pi 1A/B won't have video on the cable.
by rpdom
Tue Sep 03, 2019 7:43 am
Forum: Beginners
Topic: How can I get the latest version of MariaDB?
Replies: 19
Views: 444

Re: How can I get the latest version of MariaDB?

fruitoftheloom wrote:
Tue Sep 03, 2019 7:34 am
You should now be running Raspbian Buster as that is now the Officially Supported Operating System:
Fruity is correct. The version of mariadb-server in Raspbian Buster is 10.3.15-1
by rpdom
Tue Sep 03, 2019 7:14 am
Forum: Raspbian
Topic: Is the B+ too old for Raspian?
Replies: 12
Views: 457

Re: Is the B+ too old for Raspian?

RoccoJones wrote:
Mon Sep 02, 2019 5:50 pm
So, Buster it is. Is there any reason I shouldn't use Buster Lite? Like I said, it's main role is as an NFS server, but I can always install that after, can't I?
Buster Lite is perfect for an NFS server. There's no reason an NFS server would need a desktop.
by rpdom
Tue Sep 03, 2019 6:58 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Enable/disable SPI without raspi-config or reboot?
Replies: 6
Views: 189

Re: Enable/disable SPI without raspi-config or reboot?

sudo dtparam spi=on

sudo dtparam spi=off
by rpdom
Mon Sep 02, 2019 6:22 pm
Forum: Advanced users
Topic: Obtain CPU Temperature in Kernel
Replies: 15
Views: 607

Re: Obtain CPU Temperature in Kernel

Well, it's not ARM specific, but Pi specifc.

You can use the command vcgencmd measure_temp or you can read the contents of /sys/class/thermal/thermal_zone0/temp
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: 564

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: 457

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: 101692

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: 422

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: 791

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: 422

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: 101692

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: 331

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: 991

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: 791

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: 101692

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: 1318

Re: Very busy today?

Yes, I've been getting a few of those too for the last couple of days.

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