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by Gavinmc42
Thu Jun 18, 2020 1:48 am
Forum: Off topic discussion
Topic: PiM/PiN M.2 Multi-compute Concept
Replies: 47
Views: 3962

Re: PiM/PiN M.2 Multi-compute Concept

This looks like a Transputer system based on Pi SoCs.

How about a rack motherboard for Pi4 Computes?
Vertical mounting will help with air flow and cooling.
We already know PI4's get hot and standing them on their side helps with convection cooling.
by Gavinmc42
Thu Jun 18, 2020 1:25 am
Forum: General discussion
Topic: STICKY: USB-MSD boot EEPROM fourth update - 2020-06-15
Replies: 193
Views: 32179

Re: STICKY: USB-MSD boot EEPROM third update - 2020-06-15

Of course, promoting something to stable means a major bug will be discovered It is called progress, time to break a few eggs. Is it harder to support both beta and mainline than just fix mainline bugs? I have had less trouble with the new OS and latest bootloaders than with any previous versions. ...
by Gavinmc42
Thu Jun 18, 2020 1:03 am
Forum: Beginners
Topic: DDS with Raspberry pi microcontroller for signal generator
Replies: 8
Views: 399

Re: DDS with Raspberry pi microcontroller for signal generator

You can use the General purpose clock. If you feed it the 19.2MHz crystal frequency there is no PLL jitter. There is a minimum it can divide down too? But 0-20KHz is audio frequency so use the audio PWM at 50% duty cycle? There are two PWM channels. Probably the best place to start is Joan's code. h...
by Gavinmc42
Tue Jun 16, 2020 4:36 am
Forum: Gentoo
Topic: Bootable 64-bit Gentoo image for the RPi4 released (Xfce4 desktop)
Replies: 53
Views: 24426

Re: Bootable 64-bit Gentoo image for the RPi4 released (Xfce4 desktop)

With the recent firmware, boot from USB should be supported on the RPi4 (it works on the RPi3); haven't tested this yet. Tested USB booting Raspberry Pi OS 5.4.44, it works fine once bootloader is updated. I have updated Gentoo64 to 5.4.44 but only on an uSD, not copied it to a USB drive yet. Sakak...
by Gavinmc42
Mon Jun 15, 2020 6:38 am
Forum: General discussion
Topic: Where is the pi 4 in regards to Opengles 3.2/Vulkan support? Is there a good place to follow progress?
Replies: 38
Views: 3037

Re: Where is the pi 4 in regards to Opengles 3.2/Vulkan support? Is there a good place to follow progress?

They must be working weekends on it as well this was modded 1 day ago :D
https://gitlab.freedesktop.org/apinheir ... rivers/v3d

If they can do Vulkan 1.1 then they should be able to do 1.2 as no hardware changes are needed for 1.2.
Going to be fun soon.
by Gavinmc42
Sun Jun 14, 2020 10:54 pm
Forum: Beginners
Topic: Case FAN : should it suck, or should it blow ?
Replies: 18
Views: 1722

Re: Case FAN : should it suck, or should it blow ?

The Pi4 does not need much cooling. I have a heatsink on the SoC. The ceiling fan from 2m away keeps it around 42C. The whole PCB gets warm, cooling the SoC would stop the heat spreading to the other parts? I have tried a 20mm fan, it is more than enough, did not have anything smaller. Getting the a...
by Gavinmc42
Sun Jun 14, 2020 3:38 am
Forum: Graphics programming
Topic: Script to build development Vulkan driver and demos
Replies: 26
Views: 2491

Re: Script to build development Vulkan driver and demos

It is working on a new 32bit Raspbian with the 5.4.44 update/upgrade :D
I had to update the OS on a Pi3B+ as my Pi4 already had the new bootloader, which does not like the 4.19 boot files.

Might have to play in 32bit land until the 64bit driver/script is sorted.

Thanks Mike.
by Gavinmc42
Sat Jun 13, 2020 10:01 am
Forum: General discussion
Topic: Storage recommendations
Replies: 10
Views: 659

Re: Storage recommendations

I use PiCore Linux, the data is saved to a ram file and then written to uSD once a day.
Some have been running 24/7 for years.
by Gavinmc42
Sat Jun 13, 2020 6:32 am
Forum: General discussion
Topic: Where is the pi 4 in regards to Opengles 3.2/Vulkan support? Is there a good place to follow progress?
Replies: 38
Views: 3037

Re: Where is the pi 4 in regards to Opengles 3.2/Vulkan support? Is there a good place to follow progress?

Clean compiling in Gentto64, most of the dependencies are already installed. Seems to be a bunch of stuff around for Vulkan that should work once the driver is installed. Just about reached my skill level now. Lots to learn about compiling these things in Linux. I get this error when trying to compi...
by Gavinmc42
Sat Jun 13, 2020 3:12 am
Forum: Gentoo
Topic: Updated 64-bit Gentoo Image for RPi3 Released (now also for RPi3B+ and RPi4B)
Replies: 532
Views: 150957

Re: Updated 64-bit Gentoo Image for RPi3 Released (now also for RPi3B+ and RPi4B)

Thanks Sakaki, 5.4.44 working fine so far. Not sure why but I'm still stuck on mesa 20.0.4 If you can figure out how to add the Vulkan drivers to Gentoo64 1.60 that would be nice. I tried in Raspberry Pi OS, got very close then got stuck. https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=27641...
by Gavinmc42
Fri Jun 12, 2020 6:49 am
Forum: General discussion
Topic: I have New Pi 8GB! Solar Powered Webserver!!
Replies: 60
Views: 4026

Re: I have New Pi 8GB! and Plans in the making....

Nice deal on the panels and batteries.
It will be interesting to see if this setup is enough.

Most of my home lights are now LEDs, the total power is not that much
Been thinking a battery backup/solar lighting system would be good for power outs.
by Gavinmc42
Fri Jun 12, 2020 6:42 am
Forum: General discussion
Topic: Where is the pi 4 in regards to Opengles 3.2/Vulkan support? Is there a good place to follow progress?
Replies: 38
Views: 3037

Re: Where is the pi 4 in regards to Opengles 3.2/Vulkan support? Is there a good place to follow progress?

I used the following to get and build the demos:
Yep that worked for me.
Got a folder of compiled examples .

What does glxinfo tell you?
If the latest mesa is compiled and installed than it should be 20.x?

Is it just a case of copying all new drivers the right places?
by Gavinmc42
Fri Jun 12, 2020 6:36 am
Forum: Gaming
Topic: Game Engine
Replies: 14
Views: 1250

Re: Game Engine

I started with Pygame years ago. Pi3D now has a Rust version. I nearly got Vulkan working, which means it is very close. Godot 4 is nearly here too, it is Vulkan capable. But Pi4 and min 4GB is need to compile this stuff yourself. I use my Pi4 as a desktop so it is very usable, the extra memory is v...
by Gavinmc42
Fri Jun 12, 2020 5:54 am
Forum: General discussion
Topic: Where is the pi 4 in regards to Opengles 3.2/Vulkan support? Is there a good place to follow progress?
Replies: 38
Views: 3037

Re: Where is the pi 4 in regards to Opengles 3.2/Vulkan support? Is there a good place to follow progress?

ive tried both 64 and 32bit latest updates, no joy similar error, i suspect some more missing dependencies and headers? Nope I don't think that is the problem, mesa compiled and is in local-install. The examples compiled and are in /home/pi/sascha-willems/build/bin Just a path issue? And maybe some...
by Gavinmc42
Thu Jun 11, 2020 9:41 pm
Forum: General discussion
Topic: Where is the pi 4 in regards to Opengles 3.2/Vulkan support? Is there a good place to follow progress?
Replies: 38
Views: 3037

Re: Where is the pi 4 in regards to Opengles 3.2/Vulkan support? Is there a good place to follow progress?

./gears Fatal : VkResult is "ERROR_INITIALIZATION_FAILED" in /home/pi/sascha-willems/base/vulkanexamplebase.cpp at line 826 gears: /home/pi/sascha-willems/base/vulkanexamplebase.cpp:826: bool VulkanExampleBase::initVulkan(): Assertion `res == VK_SUCCESS' failed. Aborted Getting closer. Time to make...
by Gavinmc42
Thu Jun 11, 2020 9:30 pm
Forum: General discussion
Topic: Where is the pi 4 in regards to Opengles 3.2/Vulkan support? Is there a good place to follow progress?
Replies: 38
Views: 3037

Re: Where is the pi 4 in regards to Opengles 3.2/Vulkan support? Is there a good place to follow progress?

Working my way through things, this had to change to broadcom_icd.aarch64.json export VK_ICD_FILENAMES=/home/pi/local-install/share/vulkan/icd.d/broadcom_icd.armv7l.json I still got this error. ./gears Could not create Vulkan instance : ERROR_EXTENSION_NOT_PRESENT It looks like the *.so and examples...
by Gavinmc42
Thu Jun 11, 2020 12:44 pm
Forum: General discussion
Topic: Where is the pi 4 in regards to Opengles 3.2/Vulkan support? Is there a good place to follow progress?
Replies: 38
Views: 3037

Re: Where is the pi 4 in regards to Opengles 3.2/Vulkan support? Is there a good place to follow progress?

Still having trouble with my 64bit OS version.
Will try with 32bit Raspberry Pi OS.

Not many Open Game engines support Vulkan.
Will this work on Pi's?
https://stride3d.net/
Not sure about C# on Arm, more learning.
by Gavinmc42
Thu Jun 11, 2020 3:47 am
Forum: Troubleshooting
Topic: Engineering USB 3.0 help please........................... :D
Replies: 36
Views: 2136

Re: Engineering USB 3.0 help please........................... :D

USB3 to USB3 3.1 adapter.
Faulty adapter?
Got a multi meter to check it?
by Gavinmc42
Thu Jun 11, 2020 3:28 am
Forum: Gaming
Topic: Game Engine
Replies: 14
Views: 1250

Re: Game Engine

This is interesting, uses kha and haxe https://armory3d.org/ Kha works on Pi's https://github.com/armory3d/iron Plenty of OpenGL stuff works, interfaces with most languages. I generally test stuff with Python first and started here https://github.com/Blakkis/GLSL_Python The mesa demos are good C sim...
by Gavinmc42
Thu Jun 11, 2020 2:25 am
Forum: Automation, sensing and robotics
Topic: Sound of gunshot triggers camera. Guidance on how to?
Replies: 12
Views: 797

Re: Sound of gunshot triggers camera. Guidance on how to?

Try Pikrellcam, it can trigger using audio, I have used tiny USB microphones. Been using it since Pi B days, never even bothered to put in on Pi4's. A unidirectional microphone might help. Maybe an USB extension cable and small parabolic dish? Not sure how good the new camera is in the dark but thos...
by Gavinmc42
Thu Jun 11, 2020 2:15 am
Forum: Gaming
Topic: Game Engine
Replies: 14
Views: 1250

Re: Game Engine

5. And the main thing is that it works well on the Raspberry Pi 3B + Nothing I have found can do this. The 3B+ and OpenGL 2.1 is not bad but a bit limited, no fancy shaders. The Pi4 with Vulkan should be a better for what you want, it is nearly working. Most of the existing tools cannot use the Ope...
by Gavinmc42
Thu Jun 11, 2020 12:09 am
Forum: Troubleshooting
Topic: Engineering USB 3.0 help please........................... :D
Replies: 36
Views: 2136

Re: Engineering USB 3.0 help please........................... :D

rofl....."It has to be something stupid"......see, there I go again already...LOL :lol: LOL Been there many times, one great advantage of age is forgetting and having the fun of learning it over and over :lol: It could be a simple hardware issue or just one line of code? Not sure why Bus 2 assigns ...
by Gavinmc42
Wed Jun 10, 2020 11:58 pm
Forum: General discussion
Topic: I Want to Build A Self Driving Car What Raspberry Pi Should I Use
Replies: 23
Views: 1129

Re: I Want to Build A Self Driving Car What Raspberry Pi Should I Use

Exactly. The OP may well be SPAM bot, troll, lunatic junk but the ensuing conversations can be enlightening. Exactly, did not notice Hotz before, but now I will be following his progress and watching his Lex Fridman interview. I don't mind these sorts of things if I learn something. Never actually ...
by Gavinmc42
Wed Jun 10, 2020 11:14 am
Forum: General discussion
Topic: Where is the pi 4 in regards to Opengles 3.2/Vulkan support? Is there a good place to follow progress?
Replies: 38
Views: 3037

Re: Where is the pi 4 in regards to Opengles 3.2/Vulkan support? Is there a good place to follow progress?

Got this error on the 64bit Raspberry Pi OS meson --prefix /home/pi/local-install --libdir lib -Dplatforms=x11,drm -Dvulkan-drivers=broadcom -Ddri-drivers= -Dgallium-drivers=v3d,kmsro,vc4 -Dbuildtype=debug _build The Meson build system Version: 0.54.2 Source dir: /home/pi/mesaold Build dir: /home/pi...
by Gavinmc42
Wed Jun 10, 2020 4:39 am
Forum: General discussion
Topic: I Want to Build A Self Driving Car What Raspberry Pi Should I Use
Replies: 23
Views: 1129

Re: I Want to Build A Self Driving Car What Raspberry Pi Should I Use

I think Elon said 1000 times a second? He said something about human reactions times being so slow. The autopilot works in 3D vector space and can do very good predictions. No need for laser as the moving car can generate a 3D map from vectors. Might be able to get a 180 degree lens for the new came...

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