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by jamesh
Wed Jun 19, 2019 11:18 am
Forum: Camera board
Topic: Suggestion for camera
Replies: 3
Views: 76

Re: Suggestion for camera

Really not sure what you are asking. You don't appear to be using a Raspberry Pi, just the camera? On a custom board. Is that attached to a Pi?
by jamesh
Wed Jun 19, 2019 9:31 am
Forum: General discussion
Topic: Using RasPi for multiple display outputs
Replies: 12
Views: 269

Re: Using RasPi for multiple display outputs

Although a Pi per display sounds like overkill, with the Pi0WH its still only $14 or so per display, which is insignificant compared to the development time or having to buy HDMI splitters. It's probably still insignificant with the Pi3B+ at $35!!
by jamesh
Tue Jun 18, 2019 2:50 pm
Forum: Raspbian
Topic: Lance a script automatically that logs my raspberry pi3 to my server
Replies: 30
Views: 424

Re: Lance a script automatically that logs my raspberry pi3 to my server

Thank you all I still have a question i want you to imagine a software that enables an OS installation automatically, knowing that the os image is stored somewhere in my raspberry pi. I want you to suggest an archiitecture for doing this so i can have an idea I know there are experts among us :p Yo...
by jamesh
Tue Jun 18, 2019 1:30 pm
Forum: General discussion
Topic: Reliability Data
Replies: 3
Views: 168

Re: Reliability Data

Already asked pretty much the same thing here viewtopic.php?f=29&t=242965

The answers haven't changed.

For a master thesis I would expect you to do a lot of work on this yourself, including thermals etc.....
by jamesh
Tue Jun 18, 2019 10:07 am
Forum: General discussion
Topic: raspberry pi 3B underclock
Replies: 15
Views: 503

Re: raspberry pi 3B underclock

If you are sure there is a bug in here (to me it looks like a HW fault), then please create an issue on our firmware github repo here

https://github.com/raspberrypi/firmware

Eventually we will probably get round to looking at it, but we are VERY busy.
by jamesh
Mon Jun 17, 2019 10:19 pm
Forum: Beginners
Topic: Hostname on DHCP - is there a definitive answer?
Replies: 26
Views: 39714

Re: Hostname on DHCP - is there a definitive answer?

In order to be able to ping by hostname, add this to your /etc/hosts file: 127.0.1.1 your-hostname No Samba required. Works on wi-fi as well, but does not present the hostname to the router. So the pie still shows up as "unknown". A. No need to resurrect a old thread, this stuff is already in Raspb...
by jamesh
Mon Jun 17, 2019 10:16 pm
Forum: Camera board
Topic: Review: Graspinghand gooseneck camera mount
Replies: 8
Views: 265

Re: Review: Graspinghand gooseneck camera mount

Don't see many Pi's that old in the wild....that looks like one of the very very early ones.
by jamesh
Mon Jun 17, 2019 10:13 pm
Forum: Beginners
Topic: Persistent RAM in raspberry pi 2B
Replies: 3
Views: 145

Re: Persistent RAM in raspberry pi 2B

The Pi has no persistent memory*, everything is stored on the SD card.


* It has something called OTP (one time programmable) memory which is persistent, but that is tiny (64 32bit words?) and not accessible to users.
by jamesh
Mon Jun 17, 2019 2:35 pm
Forum: Compute Module
Topic: CM3+ 64bit OS
Replies: 2
Views: 175

Re: CM3+ 64bit OS

Please keep to one thread - you have already asked the question and got an answer.
by jamesh
Mon Jun 17, 2019 2:16 pm
Forum: Off topic discussion
Topic: [FIXED] Ego Search / Own Posts failing
Replies: 54
Views: 4794

Re: [FIXED] Ego Search / Own Posts failing

I am trying to get this sorted out. Will report back when I hear anything.

edit: note the person I need to talk to is on holiday until tomorrow.
by jamesh
Mon Jun 17, 2019 12:53 pm
Forum: Off topic discussion
Topic: [FIXED] Ego Search / Own Posts failing
Replies: 54
Views: 4794

Re: [FIXED] Ego Search / Own Posts failing

So its been nearly a month since the update to the forum that broke the ego search, while most of the problems seem to have been solved we are having to wait till the next day for the first post on a thread to show up in the ego search. while this might not seem like much of a problem when you repl...
by jamesh
Mon Jun 17, 2019 10:53 am
Forum: General discussion
Topic: How much memory is SoC memory on the Raspberry Pi 3?
Replies: 12
Views: 424

Re: How much memory is SoC memory on the Raspberry Pi 3?

HawaiianPi wrote:
Mon Jun 17, 2019 10:32 am
amorcoder wrote:
Mon Jun 17, 2019 9:18 am
I want to know the size of on chip memory. Or the Raspberry Pi 3 have no chip memory. thank you!!!
It has a tiny amount of cache, but the SoC has no onboard system RAM or flash storage.
Not that tiny.

32kB Level 1 and 512kB Level 2 cache memory, on the SoC die itself.
by jamesh
Mon Jun 17, 2019 9:13 am
Forum: General discussion
Topic: How much memory is SoC memory on the Raspberry Pi 3?
Replies: 12
Views: 424

Re: How much memory is SoC memory on the Raspberry Pi 3?

rpiMike wrote:
Mon Jun 17, 2019 7:09 am
I think that should read 1GB.
Thanks - fixed the post itself.
by jamesh
Mon Jun 17, 2019 6:57 am
Forum: General discussion
Topic: HWINFO on Raspbian???
Replies: 1
Views: 78

Re: HWINFO on Raspbian???

vcgencmd measure_temp
by jamesh
Mon Jun 17, 2019 6:56 am
Forum: General discussion
Topic: How much memory is SoC memory on the Raspberry Pi 3?
Replies: 12
Views: 424

Re: How much memory is SoC memory on the Raspberry Pi 3?

The PI3 has 1GB of total RAM, shared between the GPU and the CPU's according to the gpu_mem config variable. https://www.raspberrypi.org/documentati ... /memory.md
by jamesh
Fri Jun 14, 2019 10:19 am
Forum: Troubleshooting
Topic: USB
Replies: 2
Views: 103

Re: USB

And what is the problem? Is there indeed a problem?
by jamesh
Fri Jun 14, 2019 9:55 am
Forum: General discussion
Topic: CPU1 fail to come online
Replies: 6
Views: 237

Re: CPU1 fail to come online

If you see that on a new SD card, I would suspect broken hardware. I've never seen that error before!
by jamesh
Fri Jun 14, 2019 9:12 am
Forum: Troubleshooting
Topic: Virus or not ?
Replies: 7
Views: 369

Re: Virus or not ?

Martial wrote:
Fri Jun 14, 2019 8:53 am
thank you Jamesh,
Do you know the most likely door they used to enter ?
the web server of domoticz ?
openvpn ?
I had already changed the passwords of root and pi. Can I find a trace in a log system of their entry into my system ?

Regards
I have no idea. Sorry.
by jamesh
Fri Jun 14, 2019 8:42 am
Forum: Troubleshooting
Topic: Rasberry PI won't boot (Core Dump Failed)
Replies: 2
Views: 106

Re: Rasberry PI won't boot (Core Dump Failed)

I haven't used my PI 3 in a long time, so when I booted it up again, I just got this: "Caught <SEGV>, core dump failed" The internet has ZERO explanations for this.. Please help! ~A very tired person. Does look like the SD card is corrupted. Either re-image the card, or if you need data from this o...
by jamesh
Thu Jun 13, 2019 8:16 pm
Forum: Camera board
Topic: Pi 3 B+, v2.1 camera abyssmal fps @1080p
Replies: 12
Views: 378

Re: Pi 3 B+, v2.1 camera abyssmal fps @1080p

I was quite surprised by the cause as well, I can't make the connection. The only thing I though of is that both of them are going through the GPU somehow, which causes more strain on the GPU when trying to record and output 1080p as well, but that seems unlikely. The GPU can easily handle 1080p30 ...
by jamesh
Thu Jun 13, 2019 2:37 pm
Forum: Other programming languages
Topic: ScriptBasic
Replies: 1125
Views: 27783

Re: ScriptBasic

The big unknown is whether /dev/gpiomem will continue to exist in the future, whether direct memory access will be disallowed, and everything has to be done through libgpiod. I am still in the early stages of investigating libgpiod because it will no doubt have implications with GPIO use and partic...
by jamesh
Thu Jun 13, 2019 12:42 pm
Forum: Troubleshooting
Topic: Keypress Not Working In Raspivid??
Replies: 2
Views: 59

Re: Keypress Not Working In Raspivid??

I have just installed and built userland. I can run Raspivid but if i use the -K command, when the video is recording I can't zoom or use the other keypress commands? This is a known limitation, which we have had on our list of stuff to do for some time. Never had the chance to look at it I am afra...
by jamesh
Thu Jun 13, 2019 12:38 pm
Forum: Camera board
Topic: raspiraw different output after raspberry update
Replies: 6
Views: 213

Re: raspiraw different output after raspberry update

Good guess, it was indeed the firmware. I did a rpi-update and launched the function and the output was 407 kB. It's still incomprehensible for me, why does something unchanged won't work after an amount of time while the same thing was working before. Thank you very much anyway. Software is softwa...
by jamesh
Thu Jun 13, 2019 11:22 am
Forum: Troubleshooting
Topic: Virus or not ?
Replies: 7
Views: 369

Re: Virus or not ?

https://discourse.nodered.org/t/cryptom ... rvers/3454

Reformat the SD card and ensure you follow sensible security policies when opening device to the internet.
by jamesh
Thu Jun 13, 2019 8:43 am
Forum: Troubleshooting
Topic: Virus or not ?
Replies: 7
Views: 369

Re: Virus or not ?

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