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by clicky
Sun Feb 23, 2020 3:23 pm
Forum: Raspbian
Topic: FreeCAD on PI4 and Raspbian Buster.
Replies: 75
Views: 11536

Re: FreeCAD on PI4 and Raspbian Buster.

If we have issue of OpenGL vs OpenGL ES - why rebuilding it from source then works?
by clicky
Sat Feb 15, 2020 7:02 pm
Forum: Gaming
Topic: HTML5 games lagging on pi
Replies: 8
Views: 319

Re: HTML5 games lagging on pi

Well yesterday, I tried playing this game on chrome in my Pi4 machine. It hanged the PI. https://html5games.com/Game/Element-Blocks/8c70b6c7-5792-4c40-b891-496eef2fb5ed Is there any list online which has list of html5 games working on the pi? I even tried playing games on the scratch website - even...
by clicky
Fri Feb 14, 2020 1:14 pm
Forum: Raspbian
Topic: FreeCAD on PI4 and Raspbian Buster.
Replies: 75
Views: 11536

Re: FreeCAD on PI4 and Raspbian Buster.

My fault - I misread which thread I was posting in. There *is* a winning combination - see here:

viewtopic.php?f=63&t=253367&p=1551336#p1551336
by clicky
Fri Feb 14, 2020 9:46 am
Forum: Raspbian
Topic: FreeCAD on PI4 and Raspbian Buster.
Replies: 75
Views: 11536

Re: FreeCAD on PI4 and Raspbian Buster.

If you are after it - it is definitively worth reading instructions in this thread and building it on your own.
by clicky
Fri Jan 31, 2020 1:38 pm
Forum: Java
Topic: JOGL less performance than kmscube
Replies: 1
Views: 1207

Re: JOGL less performance than kmscube

tirex wrote:
Sat Jan 25, 2020 10:33 am
Hi, i using JOGL without x11 on my raspberry pi 4 and i have just 12 fps with GearsES2 demo in 4k resolution.

What can I do to have 50 fps on my PC?
You mean on Raspberry Pi? I am not sure if Raspberry Pi can achieve 50fps for with it. 12fps seems quite reasonable/expected performance...
by clicky
Fri Jan 31, 2020 1:25 pm
Forum: Java
Topic: LibGDX on Buster
Replies: 14
Views: 7871

Re: LibGDX on Buster

OK moving forward - version 1.9.9.rpi and 1.9.10.rpi are in https://raw.githubusercontent.com/natdan/libgdx/mvn-repo . JOGL impl now should follow what lwjgl and lwjgl3 are doing (implemented newly added methods, etc). Next is the head of 1.9.11-SNAPSHOT.... https://raw.githubusercontent.com/natdan...
by clicky
Tue Jan 21, 2020 8:16 pm
Forum: General discussion
Topic: Programming Pis with LISP programming language
Replies: 21
Views: 2306

Re: Programming Pis with LISP programming language

hosseinpink, After a quick google I find Lisp does not even get mentioned as a Logic programming language: https://www.computerhope.com/jargon/l/logic-programming.htm List is functional programming language. I think it was one of the first to implement lambda calculus. It is used as introduction to...
by clicky
Wed Jan 08, 2020 4:29 pm
Forum: Java
Topic: How to decrypt a .class file
Replies: 8
Views: 789

Re: How to decrypt a .class file

Just to be pedantic - .class files are not encrypted so - there's not need to decrypt them. They can be 'disassembled' and hence decompiler link in previous post.
by clicky
Thu Dec 26, 2019 9:08 am
Forum: Gaming
Topic: Pi zero w as arcade controller from gpio to bt connection to my pi4
Replies: 2
Views: 231

Re: Pi zero w as arcade controller from gpio to bt connection to my pi4

It is certainly possible and if you are persistent enough you can find some examples how to set it up to emulate BT gamepad/joystick. I've gone that route and it did take me a few weeks before I started understanding how things work (what is SDP record and what should go in it, what is HID report an...
by clicky
Mon Dec 09, 2019 10:31 am
Forum: General discussion
Topic: It must not always be a Pi 4 with 4 GB.
Replies: 5
Views: 417

Re: It must not always be a Pi 4 with 4 GB.

Hi Folks, It must not always be a Pi 4 with 4 GB! Completely agree! :) Actually, PiZero is go to version these days for me as it is much simpler to handle (heat dissipation and size) than other alternatives. Only thing I got (potentially!) slightly disappointed with PiZero was GPU and LibGDX - I wa...
by clicky
Thu Dec 05, 2019 11:27 am
Forum: General discussion
Topic: Raspberry Pi 4 is not a replacement for a real PC, (as it doesn't have Skype) sorry!
Replies: 68
Views: 4086

Re: Raspberry Pi 4 is not a replacement for a real PC, (as it doesn't have Skype) sorry!

Since this thread already disintegrated into divergent semi-chaos - maybe we can derail it even more: Quite amazing the responses to the one and only post by a misguided poster. @mods - is it worth doing something like what other forums do - for people with very low post count (1? <10?) have all thr...
by clicky
Tue Dec 03, 2019 7:52 pm
Forum: Java
Topic: Java IDE for Pi 4 - need to create simple GUI
Replies: 4
Views: 925

Re: Java IDE for Pi 4 - need to create simple GUI

IntelliJ Idea works well on Pi4. It is modern, up to date, fully featured, top of the range Java IDE. For many developers it is *the* best Java IDE...

And it has a free community version you won't find lacking important features at all!
by clicky
Tue Nov 19, 2019 1:50 pm
Forum: Off topic discussion
Topic: Logic NOPE gate IC
Replies: 20
Views: 1745

Re: Logic NOPE gate IC

It's when we get ternary logic perfected that the chip makers will be able to add the ultimate DWIM* instruction and all computers will only need that and HALT to solve every problem. *DWIM == do what I mean I'm sorry - I just cannot refrain: :roll: - aren't scientist (read physicists) already work...
by clicky
Mon Nov 18, 2019 3:13 pm
Forum: General discussion
Topic: Pi zero W possible to increase wi-fi strength/range?
Replies: 28
Views: 1508

Re: Pi zero W possible to increase wi-fi strength/range?

Quick (lazy) question fired at Google and the answer is:

"As the unit we began with was meters we now know that the wavelength of a 2.4GHz signal is 0.125 meters or 12.5cm."

12.5cm / 4 = 3.125cm or 31.25mm
by clicky
Mon Nov 18, 2019 10:31 am
Forum: General discussion
Topic: Pi4 as Desktop computer
Replies: 270
Views: 31322

Re: Pi4 as Desktop computer

Heater wrote:
Sun Nov 17, 2019 10:13 pm
Java Applets were a dismal failure because Java is an even worse language, they were slow, security was terrible.
ROFL. Is this some kind of flame war or just place where people pass their (uneducated?) opinions as facts? :P
by clicky
Sun Nov 17, 2019 11:36 am
Forum: General discussion
Topic: Pi4 as Desktop computer
Replies: 270
Views: 31322

Re: Pi4 as Desktop computer

So a good coding challenge would be a 3D app or game that renders at 60fps at 4K? Is it possible? Depends how simple you make it. It might be possible: https://www.youtube.com/watch?v=8q9RJtGCjXM&feature=youtu.be Here is thing I am working on. It has really small number of polygons but uses several...
by clicky
Sat Nov 16, 2019 11:29 am
Forum: General discussion
Topic: Pi4 as Desktop computer
Replies: 270
Views: 31322

Re: Pi4 as Desktop computer

That's an interesting result clicky. Certainly seems to be the GPU that is the bottleneck. Despite what everyone, everywhere says all the time, Javascript is not the problem in browsers. It really depends what you're using it for. In this instance CPU is relatively lightly used - a few calculations...
by clicky
Sat Nov 16, 2019 9:44 am
Forum: General discussion
Topic: Pi4 as Desktop computer
Replies: 270
Views: 31322

Re: Pi4 as Desktop computer

And now you lost me with that JS WebGL (performance) test. My Pi4 is averaging 4fps and in full screen from Chromium only 3fps. But, of course - that's, along with other 7fps/9fps, etc, just partial information which doesn't help a lot. My screen resolution is 2560x1600. On 1920x1080 it is 7fps and ...
by clicky
Fri Nov 15, 2019 8:19 am
Forum: General discussion
Topic: Fixing the Pi 4 usb C issue by hand
Replies: 38
Views: 21536

Re: Fixing the Pi 4 usb C issue by hand

supersjimmie wrote:
Fri Nov 15, 2019 7:32 am
Or easier to compose, but less pretty:
https://www.aliexpress.com/item/4000026719770.html
Brilliant! :D
by clicky
Fri Nov 15, 2019 8:14 am
Forum: General discussion
Topic: KDE desktop not working on the pi4
Replies: 23
Views: 1069

Re: KDE desktop not working on the pi4

There might be some nuggets about KDE here: https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=244171 I'm using KDE on daily bases and I'm happy with it. And just cannot remember what I've done to 'install it'. All I remember that it was fairly easy and stress free. Maybe Google helped a bit ab...
by clicky
Tue Nov 12, 2019 10:20 am
Forum: General discussion
Topic: Bitcoin Mining, is it worth it?
Replies: 32
Views: 44257

Re: Bitcoin Mining, is it worth it?

That sounds like a fun project. As you suspect, not worth it from a financial point of view, but fun. I teach electrical engineering for a living. You learn a lot from the work putting it together. Now the technical questions, super caps or batteries? How big of panels do you have? Will they track ...
by clicky
Mon Nov 11, 2019 8:03 pm
Forum: General discussion
Topic: Bitcoin Mining, is it worth it?
Replies: 32
Views: 44257

Re: Bitcoin Mining, is it worth it?

Running a 24 core 300w Intel server 24/7 for months would barely net you a penny if that. You could run the Pi the rest of your natural life and never see a return and you'll spend much much much more in electricity than you'll ever make. Only purpose for it would be purely educational to learn abo...
by clicky
Thu Nov 07, 2019 3:17 pm
Forum: General discussion
Topic: Raspberry Pi 4 as a primary desktop computer?
Replies: 53
Views: 7347

Re: Raspberry Pi 4 as a primary desktop computer?

I'm pretty sure that anybody who uses Chromium on RPi4 will eventually notice the freezing I'm talking about, and it will happen with more regularity than on your Intel i7. As for YouTube, sometimes it will just freeze but continue to play audio for several seconds, a behavior I don't see on other ...
by clicky
Thu Nov 07, 2019 10:42 am
Forum: General discussion
Topic: Sending real time video from one room to the other
Replies: 6
Views: 727

Re: Sending real time video from one room to the other

This is something I bookmarked some time ago and still quite keen to give it a go when I get chance:

https://befinitiv.wordpress.com/wifibro ... ideo-data/
by clicky
Fri Oct 25, 2019 8:06 pm
Forum: General discussion
Topic: Timeframe for USB C power board revision
Replies: 32
Views: 8483

Re: Timeframe for USB C power board revision

and you think that's gonna change something when you use a 'apple PSU' (it's not only apple, they're just the famous ones)? USB-C is rated up to 3A at 5V, even the 'apple charger' wont change that. They just go to higher voltage when delivering more juice which would need a power management IC (PMI...

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