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by trejan
Wed Jul 01, 2020 8:20 pm
Forum: Camera board
Topic: setting video encoder bitrate?
Replies: 3
Views: 291

Re: setting video encoder bitrate?

Neldela wrote:
Wed Jul 01, 2020 8:17 pm
Would it be possible if I create a custom encoder to set the bitrate above 50 mbits/s? (something like 150 mbits/s)
No. The H.264 codec in the SoC can't be overclocked that much.
by trejan
Wed Jul 01, 2020 5:18 pm
Forum: General discussion
Topic: My pi3 keeps getting corrupted
Replies: 14
Views: 474

Re: My pi3 keeps getting corrupted

But there is such a thing as a filesystem that does not become corrupted even if you lose power in the middle of a write. So the pi actually doesn't have such a file system? Bad pi. The Pi isn't doing anything wrong here. The Pi does use a journaled filesystem but it defaults to protecting metadata...
by trejan
Wed Jul 01, 2020 12:31 pm
Forum: Beginners
Topic: With the Pi4 in Argon One, how to connect the Pi Camera V2 to it?
Replies: 1
Views: 90

Re: With the Pi4 in Argon One, how to connect the Pi Camera V2 to it?

That case isn't designed to be used with the camera.
by trejan
Tue Jun 30, 2020 8:57 pm
Forum: Other projects
Topic: SATA/SAS connection over GPIO on RPI0?
Replies: 8
Views: 350

Re: SATA/SAS connection over GPIO on RPI0?

SAS support is not my primary goal for this project, however it is something I wish to implement sometime in the future. I have yet to find a time and cost effective way to write from an RPI to a SAS drive, although I am sure it exists. Thank you (: There is no cheap and easy way of getting SAS sup...
by trejan
Tue Jun 30, 2020 7:06 pm
Forum: Other projects
Topic: SATA/SAS connection over GPIO on RPI0?
Replies: 8
Views: 350

Re: SATA/SAS connection over GPIO on RPI0?

My goal is to make the device as small and compact as possible. The minimalist option is a USB to SATA adapter. Using the prototype SMI to PATA adapter would need you to complete + build it and you'd still need add a PATA to SATA bridge board. You'd end up with worse performance and a larger device...
by trejan
Tue Jun 30, 2020 1:01 pm
Forum: Troubleshooting
Topic: Raspberry 3 b with BCM2837B0
Replies: 2
Views: 103

Re: Raspberry 3 b with BCM2837B0

xenpro wrote:
Tue Jun 30, 2020 12:54 pm
My version with Broadcom BCM2837B0, but this processor for Raspberry 3b+. Its normal or my board is fake?) Ty)
It is normal. All new 3B boards have a BCM2837B0 now. See https://www.raspberrypi.org/app/uploads ... 3B-001.pdf for the product change notification.
by trejan
Mon Jun 29, 2020 11:40 pm
Forum: Raspberry Pi OS
Topic: Raspbian terminal does not support console-resize
Replies: 13
Views: 498

Re: Raspbian terminal does not support console-resize

LXTerminal uses the GNOME virtual terminal widget and that doesn't appear to support the window resize extension.
by trejan
Mon Jun 29, 2020 10:25 pm
Forum: Advanced users
Topic: UEFI boot to new kernel
Replies: 3
Views: 436

Re: UEFI boot to new kernel

From https://github.com/pftf/RPi4
You will NOT get SD support in Linux because current Linux kernels are missing and updated SD card driver with the required ACPI bindings.
by trejan
Mon Jun 29, 2020 10:23 pm
Forum: General discussion
Topic: My pi3 keeps getting corrupted
Replies: 14
Views: 474

Re: My pi3 keeps getting corrupted

I suspect it's due to the frequent reboots I do, is that not safe? Isn't the file system on raspbian capable of handling reboots without a clean shutdown? Rebooting with a clean shutdown is fine. If you're just unplugging it then that is bad and you will corrupt the SD card itself or the filesystem...
by trejan
Mon Jun 29, 2020 7:15 pm
Forum: General discussion
Topic: Thunderbolt 3 displays and RPi 4
Replies: 6
Views: 446

Re: Thunderbolt 3 displays and RPi 4

Is there a way to convert the mini-HDMI outputs of the RPi 4 to Thunderbolt 4 to use with the LG Ultrafine 5K display? The display has a single TB3 port. There is no adapter to do this as it would need to convert HDMI to DisplayPort then have a Thunderbolt controller to encapsulate the DisplayPort ...
by trejan
Mon Jun 29, 2020 7:06 pm
Forum: For sale
Topic: PiPLUS - RPi Multifunction I/O Extension Board
Replies: 9
Views: 10477

Re: PiPLUS - RPi Multifunction I/O Extension Board

Does anyone have any examples of code for using this board? I have tried the website but not longer available so cant find anything to help use this board. Internet Archive has a copy of the site including the user manual and the example code at https://web.archive.org/web/20140512103712/http://web...
by trejan
Mon Jun 29, 2020 6:49 pm
Forum: Other projects
Topic: Compiler in a cluster, possible?
Replies: 4
Views: 205

Re: Compiler in a cluster, possible?

Okay now that is cool, if I have this right I can install this on any pi on my network and it can assist? Yeah. I have some older Pi's that I use for Kodi boxes but most of the time they are idle. Do I need the same compilers on each? Do they have a full version of Raspbian or is something like Lib...
by trejan
Mon Jun 29, 2020 6:38 pm
Forum: Raspberry Pi OS
Topic: "who -b" gives a time stamp of "system boot 1969-12-31 18:00"
Replies: 19
Views: 738

Re: "who -b" gives a time stamp of "system boot 1969-12-31 18:00"

Real computers, with real RTCs, get the system time updated by the BIOS, before any OS has started to load/boot. It doesn't work like that as there is no system time in a PC BIOS or UEFI firmware. The OS kernel needs to read it directly or use the UEFI time services hardware abstraction layer. If i...
by trejan
Mon Jun 29, 2020 5:42 pm
Forum: Other projects
Topic: Compiler in a cluster, possible?
Replies: 4
Views: 205

Re: Compiler in a cluster, possible?

https://distcc.github.io/ does what you want. It is in the regular repo. $ apt-cache show distcc Package: distcc Version: 3.3.2-10 Architecture: armhf Maintainer: Christian Marillat <marillat@debian.org> Installed-Size: 508 Pre-Depends: init-system-helpers (>= 1.54~) Depends: libavahi-client3 (>= 0....
by trejan
Mon Jun 29, 2020 5:20 pm
Forum: Troubleshooting
Topic: Fixing incorrect undervoltage warnings
Replies: 33
Views: 1293

Re: Fixing incorrect undervoltage warnings

What does "vcgencmd get_throttled", "vcgencmd measure_temp pmic" and "vcgencmd pmicrd 1a" say? ~ sudo vcgencmd get_throttled throttled=0x50000 ~ sudo vcgencmd measure_temp pmic temp=42.0'C ~ sudo vcgencmd pmicrd 1a [1a] = 3f This all looks normal as of when you ran it. get_throttled is saying there...
by trejan
Mon Jun 29, 2020 4:47 pm
Forum: HATs and other add-ons
Topic: [Troubleshooting] - Sense Hat LED Matrix only lights in column
Replies: 5
Views: 252

Re: [Troubleshooting] - Sense Hat LED Matrix only lights in column

bensimmo wrote:
Mon Jun 29, 2020 4:37 pm
I've never seen anyone actually try to flash the AVR either.
They're rewriting the HAT EEPROM.

The source and the avrdude incantation is on the rpi-sense repo if anybody does want to reflash the AVR though. The documentation only has a blank section for reflashing the AVR for some reason.
by trejan
Sun Jun 28, 2020 11:06 pm
Forum: Advanced users
Topic: EEPROM upgrade from GPIO?
Replies: 16
Views: 978

Re: EEPROM upgrade from GPIO?

cleverca22 wrote:
Sun Jun 28, 2020 10:48 pm
there probably are testpoints on the bottom of the board, that route to the sd card slot
It doesn't look like there are test points for the SD interface on the Pi 4. The nearby test points are power related.
by trejan
Sun Jun 28, 2020 8:46 pm
Forum: Advanced users
Topic: -
Replies: 3
Views: 438

Re: HD GRAPHICS IMPROVEMENT

Well, I can't help but say this. I really think my fix is better than messing with the compositor settings. Your fix is exactly the same except you're doing it manually. xcompmgr is the default compositor. raspi-config is creating/deleting /etc/xdg/autostart/xcompmgr.desktop when you enable/disable...
by trejan
Sun Jun 28, 2020 8:35 pm
Forum: Troubleshooting
Topic: Pi 4 - SPI Location and External Programming
Replies: 11
Views: 378

Re: Pi 4 - SPI Location and External Programming

dkushagra wrote:
Sun Jun 28, 2020 8:25 pm
Can you tell me the chip number that is mentioned on top of it ?
Last time I looked, it was a Winbond W25X40CLUXIG.
by trejan
Sun Jun 28, 2020 7:42 pm
Forum: Troubleshooting
Topic: Pi 4 - SPI Location and External Programming
Replies: 11
Views: 378

Re: Pi 4 - SPI Location and External Programming

dkushagra wrote:
Sun Jun 28, 2020 5:13 pm
2: Which exact EEPROM is the one that holds the Bootloader. (There are two on the PI 4)
Bootloader is the one nearest the headphone socket.
by trejan
Sun Jun 28, 2020 7:29 pm
Forum: General discussion
Topic: Source code for Bookshelf application ?
Replies: 14
Views: 592

Re: Source code for Bookshelf application ?

AFAICT it's not (yet) available on the RPF/RPT github repos. You can download the source with 'apt source' (after un-commenting the appropriate line in sources.list). Or download the current version directly: http://archive.raspberrypi.org/debian/pool/main/r/rp-bookshelf/rp-bookshelf_0.4.tar.xz We ...
by trejan
Sun Jun 28, 2020 2:47 am
Forum: Graphics, sound and multimedia
Topic: Playing Midi files from the command line
Replies: 2
Views: 199

Re: Playing Midi files from the command line

I can call mt32d -h for a list of commands, but I have both a sysex file and a .mid file. the -e switch loads the sysex into munt, but then how do I play the actual midi file? Your player needs to send the sysex patches before sending the MIDI file. You can't do it separately. The -e option is for ...
by trejan
Fri Jun 26, 2020 9:56 pm
Forum: Troubleshooting
Topic: ValueError: No I2C device at address: 67
Replies: 6
Views: 216

Re: ValueError: No I2C device at address: 67

hellonancy07 wrote:
Fri Jun 26, 2020 9:52 pm
Am I able to change default to 0x67? How to edit that? In the adafruit mcp9600 library?
Try "mcp = adafruit_mcp9600.MCP9600(i2c, 0x60)"
by trejan
Fri Jun 26, 2020 9:42 pm
Forum: Troubleshooting
Topic: RPI os buster lite - wrong subnet
Replies: 2
Views: 103

Re: RPI os buster lite - wrong subnet

Check your router or server if you have a standalone DHCP server running. 169.254.x.x is the link local IP address range which is what the Pi will assign itself if it can't contact the DHCP server.
by trejan
Fri Jun 26, 2020 9:13 pm
Forum: Troubleshooting
Topic: Canakit pi4 USB-C AC power supply issues
Replies: 1
Views: 99

Re: Canakit pi4 USB-C AC power supply issues

Send it back for a replacement. Don't continue to use it as you may damage the socket on the Pi or your phone.

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