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by MuntyScruntfundle
Tue Jun 11, 2019 8:02 pm
Forum: General discussion
Topic: Toggle switch question?
Replies: 4
Views: 226

Toggle switch question?

Hi folks. I know this is strictly an electrics question, but it's going to be connected to a pi, so I hope you can forgive me. I need a 4 pole toggle switch, and kind of an On/On switch. I don't know what the correct terminology is, but the diagram goes... (Where A and B are inputs and 'o' is the ou...
by MuntyScruntfundle
Tue May 28, 2019 1:22 pm
Forum: General discussion
Topic: Music server with a twist.
Replies: 1
Views: 142

Music server with a twist.

Hi there. My gardener chap (nice guy) has come to me today with an idea, he wants a small, inexpensive (cheap) music server. The immediate thought is a pi+ssd. Simple. Except he wants the sound sent to his old retro hifi system. That's ok, the headphone jack should accomplish that. The problem is, w...
by MuntyScruntfundle
Thu Apr 18, 2019 9:26 pm
Forum: General discussion
Topic: fsck on an image?
Replies: 1
Views: 116

fsck on an image?

If I take a working raspberry sd, put it in an external card reader attached to another pi, locate the sd as /dev/sda(b,c) then run - fsck /dev/sda, should I get errors about superblocks and be advised to try another version which gives the exact same error? I now have a mixture of Ubuntu, Debian an...
by MuntyScruntfundle
Mon Apr 15, 2019 4:01 pm
Forum: General discussion
Topic: fstab woes.
Replies: 3
Views: 187

Re: fstab woes.

Thanks folks, added and the first test appeared to be ok.

Many thanks, saved me a huge headache. :o)
by MuntyScruntfundle
Wed Apr 03, 2019 11:09 am
Forum: General discussion
Topic: fstab woes.
Replies: 3
Views: 187

fstab woes.

Hi folks. For some time I've been running external drives with a few pis. Recently I had to move a drive from one place to another. Not realising fstab would cause issues a week of fault finding ensued. The good news is I have it working now. I might have lost a little hair. fstab is great for netwo...
by MuntyScruntfundle
Mon Apr 01, 2019 9:35 am
Forum: General discussion
Topic: Emergency mode loop.
Replies: 1
Views: 106

Emergency mode loop.

After formatting (gparted) and mounting in fstab a new SSD connected via USB my pi is giving me the "root not accessible.. blah" message, "Press enter to continue". So I do, and get the same message. How can I break out of this loop? I can burn the SD again and go back to a resent image, but I'd soo...
by MuntyScruntfundle
Tue Mar 19, 2019 11:28 am
Forum: General discussion
Topic: Disk activity light.
Replies: 2
Views: 275

Disk activity light.

Hi folks. I've poked the disk activity settings in config.txt so I now have pin 21 being the disk activity led. But, this only seems to be connected to the SD, with a usb/sata drive attached I get no light activity when this drive is being accessed. Of course the SD is connected to the board and my ...
by MuntyScruntfundle
Fri Mar 15, 2019 5:10 pm
Forum: General discussion
Topic: Identifying a board..
Replies: 15
Views: 891

Identifying a board..

Hi folks.

I'm just wondering -as this would save me huge amounts of time- is there anything on the Raspberry I can write a permanent value to? Would only need to be 3 digits as a kind of identifier.

Any ideas?

Thanks.
by MuntyScruntfundle
Tue Mar 05, 2019 5:28 pm
Forum: General discussion
Topic: enter.hooks advice?
Replies: 0
Views: 134

enter.hooks advice?

Hi folks. I've been looking for an answer to running scripts from my NAS on boot recently, the dhcpcd.enter-hook file approach seems to be what I'm looking for, however I'm having some difficulty getting it set up. The manual pages for the file expect a certain knowledge of unix systems which it app...
by MuntyScruntfundle
Mon Mar 04, 2019 5:31 pm
Forum: General discussion
Topic: Finding differences in identical pis?
Replies: 10
Views: 518

Re: Finding differences in identical pis?

And should add: The network is a bunch of stacked GS752TS so there is no way (unless i decided to copy a 5gb file on stop) there can be any bottlenecks. And still this wouldn't explain why all the problem pis stay on for xx seconds longer, then all power off at the same time.
by MuntyScruntfundle
Mon Mar 04, 2019 5:27 pm
Forum: General discussion
Topic: Finding differences in identical pis?
Replies: 10
Views: 518

Re: Finding differences in identical pis?

I suppose I could write a script that dumped the process list every second, but I'd have no control over when it would be closed down, so would it help??
by MuntyScruntfundle
Mon Mar 04, 2019 5:27 pm
Forum: General discussion
Topic: Finding differences in identical pis?
Replies: 10
Views: 518

Re: Finding differences in identical pis?

They are identical. Same pi. Same cards. Same Distro. Same Updates. Same Upgrades. Same installs. Same mounts. Same Power. Same GPIO assignments. The problem isn't with individual pis, especially the slow shutdown, it will randomly affect different pis on each system shutdown or reboot. It's a softw...
by MuntyScruntfundle
Mon Mar 04, 2019 11:54 am
Forum: General discussion
Topic: Ideal temperatures.
Replies: 10
Views: 523

Re: Ideal temperatures.

As your goal is “to ensure the longevity of a pi”, you should not only keep the temperature from too high (or too cold) but also minimize the temperature fluctuation.
So as "bertlea" suggests, the temperature should be stable. But what damage is likely with fluctuation?

Thanks again.
by MuntyScruntfundle
Mon Mar 04, 2019 11:53 am
Forum: General discussion
Topic: Ideal temperatures.
Replies: 10
Views: 523

!

The fans on relays were a test of an idea, plus 16x 100mm fans right next to your ear do make a far bit of racket. The rely clicks aren't half as intrusive. One of the jobs these little friends are doing is Blender Rendering, this can mean hitting 400% for each rendered frame for over 3 hours, left ...
by MuntyScruntfundle
Sun Mar 03, 2019 2:34 pm
Forum: General discussion
Topic: Ideal temperatures.
Replies: 10
Views: 523

Ideal temperatures.

Hi there. I have a block of pis, quite a few of them. They're closely packed so they build up temperature pretty quickly and soak from one to another cannot be avoided. This is the design, it cannot be any different. To manage the temp pis calculate a block position based on IP address, if a pi in a...
by MuntyScruntfundle
Sat Mar 02, 2019 2:08 pm
Forum: General discussion
Topic: What can be performed from the boot drive?
Replies: 4
Views: 244

What can be performed from the boot drive?

Hi there. Just wondering what actions can be performed during the boot process as early as using the boot drive? Would it be possible to have something around config.txt copy a file from the boot root to other parts of the system? Or is the system not aware of the other partitions at that time? I'm ...
by MuntyScruntfundle
Sat Mar 02, 2019 1:42 pm
Forum: General discussion
Topic: Finding differences in identical pis?
Replies: 10
Views: 518

Finding differences in identical pis?

Hi there. I have bunch of pis which are all built from the same image, they've have exactly the same installs, upgrades etc. They all show different numbers of processes running and some take far longer to boot and shutdown than others. Where do I start looking for issues? Are there boot and shutdow...
by MuntyScruntfundle
Thu Feb 28, 2019 1:31 pm
Forum: General discussion
Topic: smdb connections?
Replies: 1
Views: 112

smdb connections?

Hi folks. I've read the information on the Samba web site that states the smdb service handles all requests, therefore there will be a running process for all clients. I'm currently looking at a pi that has around 40 running instances of smdb, but I only have one mount and I'm using one ssh connecti...
by MuntyScruntfundle
Sat Feb 23, 2019 10:08 pm
Forum: General discussion
Topic: Remote GPIO leave high and close?
Replies: 1
Views: 144

Re: Remote GPIO leave high and close?

Plus, is anyone aware of shutdown problems after using pigpio, or with pigpio running as a daemon? I have a few nodes that are now taking minutes to shut rather than a few seconds. The only change today has been setting up the pigpio.

Thanks.
by MuntyScruntfundle
Sat Feb 23, 2019 9:49 pm
Forum: General discussion
Topic: Remote GPIO leave high and close?
Replies: 1
Views: 144

Remote GPIO leave high and close?

I've been having a right old laugh with the remote gpio today, blimey! Anyway, I'm using python and wondering how I can: Create factory Create LED Set LED high Close LED Close factory Without the LED being send LOW on close. I need the state I set to be persistent after the object is destroyed. Is t...
by MuntyScruntfundle
Fri Feb 22, 2019 12:37 pm
Forum: General discussion
Topic: Dual HDMI?
Replies: 12
Views: 1284

Re: Dual HDMI?

Yeah I should have explained more, I left the subject rather open! 2 monitors, 2 different desktops I suppose, I hadn't thought at all about the logistics of how I would index each of them. I have a couple of 'mini' screens, a superb 8 inch 1080p monitor, I forget where that came from, and the usual...
by MuntyScruntfundle
Thu Feb 21, 2019 4:02 pm
Forum: General discussion
Topic: init.d file waiting for network?
Replies: 1
Views: 95

init.d file waiting for network?

Hi folks.

I've tried following a couple of Debian posts on this matter, but the options don't seem to exist in Raspbian.

With the rasp, how can I make a file in the init.d directory wait for network up before executing?

Many thanks.
by MuntyScruntfundle
Thu Feb 21, 2019 3:25 pm
Forum: General discussion
Topic: Installing mpi4py
Replies: 1
Views: 173

Installing mpi4py

Hi there. Has anyone tried following the install instructions for mpi4py recently? I can't find any working solutions. All describe downloading the package and manually installing, which is no problem, but the build fails siting a missing mpi.h Does this mean something has been removed from Raspbian...
by MuntyScruntfundle
Thu Feb 21, 2019 2:00 pm
Forum: General discussion
Topic: Dual HDMI?
Replies: 12
Views: 1284

Dual HDMI?

Anyone know of a working dual HDMI option for the Raspberry?

Many thank yoos.
by MuntyScruntfundle
Mon Feb 18, 2019 2:26 pm
Forum: General discussion
Topic: 5v relay 1=0, 0=1?
Replies: 5
Views: 279

Re: 5v relay 1=0, 0=1?

Thanks folks, this information is great, knowing why something appears backwards is so much more valuable than just accepting it. Also explains very well why I couldn't find any OR gates that didn't require external power I guess. I don't have any problems with the coding of the system, that's all w...

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