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by Gavinmc42
Thu Jul 02, 2020 12:04 am
Forum: Gaming
Topic: FlightGear & Pi4
Replies: 40
Views: 6384

Re: FlightGear & Pi4

Looks pretty good. Have not tried FG for a while. Wondering now if a bit more performance can be tweaked by going to Vulkan soon? https://vsg-dev.github.io/VulkanSceneGraph/ https://github.com/vsg-dev [[ 67%] Building CXX object src/vsg/CMakeFiles/vsg.dir/viewer/Trackball.cpp.o /home/pi/VulkanSceneG...
by Gavinmc42
Wed Jul 01, 2020 1:17 pm
Forum: General discussion
Topic: own PCB design based on Raspberry Pi 4 schematic
Replies: 7
Views: 446

Re: own PCB design based on Raspberry Pi 4 schematic

I usually just design boards that plug onto the GPIO header, daughter boards(Hats). Or a bigger board where the Pi is turned over and plugged onto, motherboards. Everything its much easier that way. You can use the Compute boards, but I have never bothered. Zeros with baremetal code are pretty small...
by Gavinmc42
Wed Jul 01, 2020 1:11 pm
Forum: Gaming
Topic: Quake and Quake III, but not Quake II?
Replies: 43
Views: 22278

Re: Quake and Quake III, but not Quake II?

Pi4 Vulkan https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=277125&p=1678832&hilit=vulkan#p1678832 I did get it working and then broke it ;) A path issue or missed step? I got a bunch of Vulkan examples and demos and they all compiled in 32 and 64bit but popped an error when trying to run. I ...
by Gavinmc42
Wed Jul 01, 2020 11:55 am
Forum: Off topic discussion
Topic: Tongue so far into cheek...
Replies: 28
Views: 2422

Re: Tongue so far into cheek...

No, the fault lies with the dumb nuts that purchase, install and use all of this and blindly trust that it works correctly. Then and the guys who sold those suckers their over hyped product. Oi, that's my government you are talking about ;) Yes they are a bunch of idiots that listen to "experts", p...
by Gavinmc42
Wed Jul 01, 2020 10:04 am
Forum: Gaming
Topic: Quake and Quake III, but not Quake II?
Replies: 43
Views: 22278

Re: Quake and Quake III, but not Quake II?

Vulkan based vkQuake?
viewtopic.php?f=63&t=277779
by Gavinmc42
Wed Jul 01, 2020 8:36 am
Forum: Off topic discussion
Topic: Tongue so far into cheek...
Replies: 28
Views: 2422

Re: Tongue so far into cheek...

Humans claim to be rational and have some kind of intelligence. But I would argue that is only a small part of what we are. We have all kind of motivations for doing or not doing all kind of things that are not rational and often downright bonkers. Makes you wonder if we do make AI's will they do b...
by Gavinmc42
Wed Jul 01, 2020 7:41 am
Forum: Off topic discussion
Topic: Tongue so far into cheek...
Replies: 28
Views: 2422

Re: Tongue so far into cheek...

That way, your energy storage system is the Hydrogen. Energy density. High pressure or liquid H2? Takes power to compress it. https://en.wikipedia.org/wiki/Energy_density Check out how energy dense stored hydro is, but probably cheaper than batteries or super capacitors. Oz Gov spending lots of mon...
by Gavinmc42
Wed Jul 01, 2020 4:09 am
Forum: Off topic discussion
Topic: Tongue so far into cheek...
Replies: 28
Views: 2422

Re: Tongue so far into cheek...

I think He3 Fusion might be why so many are going to the moon and intend to stay there. If it will be viable they probably don't know yet. There are a number of ways to do fusion without making neutrons https://en.wikipedia.org/wiki/Aneutronic_fusion I wouldn't even consider anything less than 5KW. ...
by Gavinmc42
Wed Jul 01, 2020 1:02 am
Forum: Off topic discussion
Topic: Tongue so far into cheek...
Replies: 28
Views: 2422

Re: Tongue so far into cheek...

Ha, ha, Raspberry Pi users are all Emmett Brown's? Mind you I have been wondering lately if HB11 fusion is possible. One small enough for individual households. 500W-1KW should be enough for most people. Need some better VCSEL diodes first. A 500W- 1KW thermal CO2 super-critical Stirling Generator d...
by Gavinmc42
Sun Jun 28, 2020 2:23 am
Forum: General programming discussion
Topic: Tatami Pi Fun.
Replies: 321
Views: 29167

Re: Tatami Pi Fun.

This one is a deep NN but explains the compression https://github.com/bayesgroup/variational-dropout-sparsifies-dnn Yolo3 on Pi's https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=259562&hilit=yolo3 Yolo4? that's new https://github.com/AlexeyAB/darknet Binary should be suitable for Tatami, the...
by Gavinmc42
Thu Jun 25, 2020 10:08 am
Forum: General programming discussion
Topic: Tatami Pi Fun.
Replies: 321
Views: 29167

Re: Tatami Pi Fun.

You sit in the supermarket!? I like to live dangerously :D I used to walk about the isles to see if I could track the BT's, but staring at my phone while walking was more dangerous. We used to worry about shopping speed, not anymore, the wife shops, I sit. Actually in Oz, it is pretty safe, outer b...
by Gavinmc42
Thu Jun 25, 2020 1:16 am
Forum: General discussion
Topic: Raspberry Pi integrated storage
Replies: 59
Views: 2693

Re: Raspberry Pi integrated storage

You can get the compute modules with eMMC on the PCB's.
The Pi4 has a boot EEPROM, useful size if you are into Demoscene on Pi's and an expert.
by Gavinmc42
Thu Jun 25, 2020 1:12 am
Forum: General programming discussion
Topic: Tatami Pi Fun.
Replies: 321
Views: 29167

Re: Tatami Pi Fun.

That Novid app is cool, using Ultrasonic is more accurate than BLE RSSI. Wonder if it will annoy dogs? There are some new tiny Ultrasonic transceivers out now, I noticed them this week in Digikey. TDK and Murata.... Some digital mics are getting higher in frequency, connect them to the Pi's i2s pins...
by Gavinmc42
Thu Jun 25, 2020 12:25 am
Forum: Beginners
Topic: Not enough GPIO pins??
Replies: 6
Views: 453

Re: Not enough GPIO pins??

Linux has a driver for software bit banging I2C on any GPIO.
Have not checked recently, it was years ago, probably still there.
Search for i2c-gpio
by Gavinmc42
Wed Jun 24, 2020 11:29 am
Forum: General discussion
Topic: Raspberry Pi 4 B smoking
Replies: 8
Views: 566

Re: Raspberry Pi 4 B smoking

Smoke came out, the protection diode jumped off the board. I turned it off quickly.
Done that before, yep blows up that diode.
Still worked except for the GPIO pin that got 12v ;)
I did not try it again.
by Gavinmc42
Tue Jun 23, 2020 7:18 am
Forum: General programming discussion
Topic: gpu_fft for RPi4?
Replies: 22
Views: 1457

Re: gpu_fft for RPi4?

OpenGLES 3.1 has compute shaders. FFT should be possible on that. https://arm-software.github.io/opengl-es-sdk-for-android/ocean_f_f_t.html There is also this code https://github.com/Idein/py-videocore6 With Vulkan getting closer, this type of thing could be done. https://github.com/Lichtso/VulkanFF...
by Gavinmc42
Mon Jun 22, 2020 11:18 pm
Forum: General discussion
Topic: New RPi-VK-Driver low level driver
Replies: 15
Views: 2922

Re: New RPi-VK-Driver low level driver

Vulkan over framebuffer will be interesting for baremetal, not just for Pi's either. Lots of SoC chips with video/graphics/HDMI only do framebuffer drivers. Probably some performance loss but that might not matter for the applications they get used in. Vulkan based GUIs for instrumentation/industria...
by Gavinmc42
Mon Jun 22, 2020 10:02 am
Forum: General discussion
Topic: New RPi-VK-Driver low level driver
Replies: 15
Views: 2922

Re: New RPi-VK-Driver low level driver

Anything that uses 3d acceleration now could benefit. Desktop for example. Blender. Anything that uses 3d in its GUI. Blender is stuck at 2.79 due to OpenGL 2.1 Not sure if later versions can use Vulkan? Desktop :o That's interesting, a faster desktop? I had been trying to make an OpenVG based WM w...
by Gavinmc42
Mon Jun 22, 2020 7:14 am
Forum: General discussion
Topic: New RPi-VK-Driver low level driver
Replies: 15
Views: 2922

Re: New RPi-VK-Driver low level driver

Other than in game like this, any possibility for us to benefit from the driver in other kind of applications? Games are good , maybe we will get $$ games ported to Pi's? Godot 4 will have Vulkan support so kids and older folks can learn to code games on Pi's. 3D visualization of data could be fast...
by Gavinmc42
Mon Jun 22, 2020 12:26 am
Forum: OpenGLES
Topic: Open GL ES rendering goes over My Head
Replies: 6
Views: 627

Re: Open GL ES rendering goes over My Head

Tested all these on Pi4 I found this the easiest place to start. https://github.com/Blakkis/GLSL_Python Depends on which language you prefer. I have used C, C++, Pascal, Rust, Basic, Go, Python... Various libraries help, I like FreeGLUT for it's primitive shapes like sphere etc I made a simple airsh...
by Gavinmc42
Sun Jun 21, 2020 8:45 am
Forum: General discussion
Topic: New RPi-VK-Driver low level driver
Replies: 15
Views: 2922

Re: New RPi-VK-Driver low level driver

Compiled all fine but reached my limits of knowledge to use it. Maybe a path error? Could not create Vulkan instance : ERROR_EXTENSION_NOT_PRESENT Yet another way to do Vulkan? https://github.com/KhronosGroup/Vulkan-Docs/pull/1292 All the stars must be aligning. This Kernel 5.4.45 is not bad on a Pi...
by Gavinmc42
Sun Jun 21, 2020 2:21 am
Forum: Raspberry Pi OS
Topic: RPiOS64 - Analog Sound Broken... Any Workaround?
Replies: 7
Views: 526

Re: RPiOS64 - Analog Sound Broken... Any Workaround?

Just noticed sound is working. 5.4.44
I had to turn all the the volumes up to hear anything.
I had same issue in Gentoo64, 5.4.45, I suspect it might be the same problem.
by Gavinmc42
Sun Jun 21, 2020 2:09 am
Forum: General discussion
Topic: New RPi-VK-Driver low level driver
Replies: 15
Views: 2922

Re: New RPi-VK-Driver low level driver

Oh wow, this is impressive.
Need to dust off my Pi3B+'s and other older Pi's now.
I was expecting vkQuake to show up on the Pi4 first.

Going to need a 2nd or third lockdown to learn all this now.

How many of the Vulkan Examples work?
by Gavinmc42
Sun Jun 21, 2020 1:51 am
Forum: Graphics programming
Topic: How to Program Graphics in C++ on Rasp Pi
Replies: 30
Views: 2086

Re: How to Program Graphics in C++ on Rasp Pi

GLES 2 is soooo last year :lol: All the cool kids are using GLES 3 now 8-)
I'm having great success with GLES 3.
What libs/tools did you use for that 3D object?
Have you got any 3.1 compute shader code working?
by Gavinmc42
Sat Jun 20, 2020 12:15 pm
Forum: General discussion
Topic: Please help - USB/SSD Boot fpr Pi4 4GB
Replies: 6
Views: 404

Re: Please help - USB/SSD Boot fpr Pi4 4GB

You will probably need a uSD card to update the PI4's EPROM bootloader. I just use an old 2GB SD card I had lying around. No need for a fancy uSD as long as you have a way to copy the files to the uSD. If you have a Windows PC you can use the Raspberry Pi image program to copy the OS to the SSD. htt...

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