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by clicky
Tue Sep 08, 2020 1:25 pm
Forum: General discussion
Topic: Eclipse is coming to Raspberry Pi
Replies: 20
Views: 1400

Re: Eclipse is coming to Raspberry Pi

Good news! Well done.

How much of changes ended up back in main platform repo? Would it be possible building complete original Eclipse for Java Developers with your changes, too?
by clicky
Tue Sep 08, 2020 1:23 pm
Forum: Java
Topic: Eclipse might be back on Raspberry Pi
Replies: 10
Views: 1721

Re: Eclipse might be back on Raspberry Pi

:D Good news!
by clicky
Thu Sep 03, 2020 8:55 am
Forum: General discussion
Topic: Multiple stepper motors
Replies: 4
Views: 193

Re: Multiple stepper motors

Depending on your level of skills you could drive stepper motors directly by DMA from RPi as Brian did here:
https://blog.usedbytes.com/2018/06/motors/
https://blog.usedbytes.com/2019/02/mini ... -software/
and
https://github.com/usedbytes/yapidh
by clicky
Thu Sep 03, 2020 8:50 am
Forum: General discussion
Topic: Fenix OS PI4 COMPIZ EFFECTS ARE BACK!!!!
Replies: 2
Views: 611

Re: Fenix OS PI4 COMPIZ EFFECTS ARE BACK!!!!

Really nice! :) What's the screen resolution you have there? (getting such a smooth transition) BTW thank you very much - you've just wasted half a hour for me trying out various things on my Pi4's plasma (KDE) desktop! :p LOL Strangely enough it has kube desktop switching effects available - but no...
by clicky
Thu Sep 03, 2020 8:25 am
Forum: General discussion
Topic: Power supply for various Pis
Replies: 0
Views: 100

Power supply for various Pis

Just to quickly share something - I started being fed up of hunting for yet another charger (and a free power socket on my desk) when I connect another Raspberry Pi on my desk and recently got Anker's power supply for my Pi4 kubernetes cluster (https://www.amazon.co.uk/gp/product/B08CB22NT3) and tha...
by clicky
Tue Aug 25, 2020 5:51 pm
Forum: General discussion
Topic: How necessary is extra cooling for the RPi4 now?
Replies: 26
Views: 2066

Re: How necessary is extra cooling for the RPi4 now?

whiteshepherd wrote:
Tue Aug 25, 2020 3:39 pm
Fans wear out.
Quite correct. Reason more to invest some time to run PWM version of software for fan shim (or similar).
by clicky
Tue Aug 25, 2020 11:32 am
Forum: General discussion
Topic: How necessary is extra cooling for the RPi4 now?
Replies: 26
Views: 2066

Re: How necessary is extra cooling for the RPi4 now?

I'll try to stay away from (more interesting) topic of cooking vs frying eggs on RPi CPU, but... I've noticed that my, fussy, constantly breaking for always a different unknown reason, Pi4 micro k8s cluster (https://blog.abstracthorizon.org/posts/2020/08/pi4-microk8s-cluster/) does taxes CPU and tem...
by clicky
Tue Aug 25, 2020 11:21 am
Forum: General discussion
Topic: STICKY: Raspberry Pi OS (64 bit) beta test version feedback
Replies: 442
Views: 87615

Re: STICKY: Raspberry Pi OS (64 bit) beta test version feedback

An updated .IMG has been released: Does this contain the MMAL/VNC Server issue? I'm here because I unwittingly did an update last night and lost my VNC connect which is the only way I can access the GUI (the RPi 4/8Gb is on a server rack). Trying to ssh the fix didn't work. So a clean VNC compatibl...
by clicky
Sat Aug 22, 2020 12:37 pm
Forum: General discussion
Topic: Pi4 "networked AI core"?
Replies: 15
Views: 1536

Re: Pi4 "networked AI core"?

Thanks! :) That's definitively worth keeping an eye on.

My current daydream (regarding above) is to have equivalent of Nvidia GPU for k8s for Pi4.
by clicky
Sat Aug 22, 2020 10:58 am
Forum: Java
Topic: Java only being able to reserve 2.5GB on a 4GB Raspberry pi 4
Replies: 7
Views: 723

Re: Java only being able to reserve 2.5GB on a 4GB Raspberry pi 4

This is interesting: 8GB RPi, X-windows with KDE and one terminal window open - cannot allocate more than 6.3GiB (heap is set to 8GiB). Also, JDK13 and JDK14 just bomb out with 'Killed' and no other indication why Java process stopped. Here's the output of above program: ... Allocated 3800MiB, total...
by clicky
Sat Aug 22, 2020 10:42 am
Forum: Java
Topic: Java only being able to reserve 2.5GB on a 4GB Raspberry pi 4
Replies: 7
Views: 723

Re: Java only being able to reserve 2.5GB on a 4GB Raspberry pi 4

import java.util.ArrayList; import java.util.List; public class MemoryTest { public static void main(String[] args) throws Exception { List<byte[]> allocatedObjects = new ArrayList<byte[]>(); for (int i = 0; i < 6 * 10; i++) { allocatedObjects.add(allocateHundredMegabytes()); System.out.println("Al...
by clicky
Sat Aug 22, 2020 10:09 am
Forum: General discussion
Topic: Pi4 "networked AI core"?
Replies: 15
Views: 1536

Re: Pi4 "networked AI core"?

This might be seen a slightly tangential - but I am sure I've (on one of my computer, at some point in last 1.5 years) bookmarked a link to experimental OpenCL (or similar) github(? - again or similar - but I have vague memory it is github) project. Also, again my memory(!), it was something to do w...
by clicky
Sun Aug 16, 2020 11:48 am
Forum: General discussion
Topic: My Thoughts on Using a Raspberry PI 4 8GB as a Desktop Replacement
Replies: 100
Views: 6122

Re: My Thoughts on Using a Raspberry PI 4 8GB as a Desktop Replacement

MicroSD vs. USB Relying on a MicroSD card for anything other than booting is asking for trouble. They weren’t designed to be a general purpose I/O device. The fact that they work as well as they do on an RP4 is a miracle. I know that Raspberry Pi OS and the RP4 firmware have recently been updated t...
by clicky
Sat Aug 15, 2020 10:03 am
Forum: General discussion
Topic: Is Pi4 desktop experience supposed to be this bad?
Replies: 86
Views: 5185

Re: Is Pi4 desktop experience supposed to be this bad?

Ubuntu was a step up in installation experience and probably the first Linux distro which encouraged Windows users to at least try Linux That was of course helped by a massive push of free CD's, and having a Live CD capability.. This is one of the statements I was trying not to react to (and appare...
by clicky
Fri Aug 14, 2020 8:52 pm
Forum: General discussion
Topic: Is Pi4 desktop experience supposed to be this bad?
Replies: 86
Views: 5185

Re: Is Pi4 desktop experience supposed to be this bad?

My bad: Linus created Linux BTW - I don't have anything against Ubuntu - I do believe that having variety in life (and linux distributions) is good thing. I was just against some kind of (bad) generalisations: relatively recently (let's say 2 years ago?) I've got impression that certain parts of the...
by clicky
Fri Aug 14, 2020 6:10 pm
Forum: General discussion
Topic: Is Pi4 desktop experience supposed to be this bad?
Replies: 86
Views: 5185

Re: Is Pi4 desktop experience supposed to be this bad?

It is really hard reading many half-truths stated in this thread - and very, very narrow views - views from certain generation, University (stream), country or such... For instance 'the government' most likely would never apply on Sweden (my personal view based on poor guy who was zeroed at for his ...
by clicky
Thu Aug 13, 2020 7:10 am
Forum: General discussion
Topic: Is Pi4 desktop experience supposed to be this bad?
Replies: 86
Views: 5185

Re: Is Pi4 desktop experience supposed to be this bad?

So, given all that, can you make an argument that you'd still prefer that the Pi run Linux? Wouldn't you have to concede in that case, we'd just run Windows on it? And that, thus, we're really only liking Linux because it is there - because we can. Windows is 'popular' only because it is widely ava...
by clicky
Mon Aug 10, 2020 5:15 pm
Forum: General discussion
Topic: Collections
Replies: 15
Views: 585

Re: Collections

Brilliant: I'll add 'collect internet to 2TB or bigger disk' to my family 'zombie apocalypse' dinning table discussions! :D BTW - all of it is not completely unreasonable line of thinking. If anyone here knows what 'Nexus' is in Java/Maven world - it happened, were made, because of something similar...
by clicky
Mon Aug 10, 2020 1:57 pm
Forum: Java
Topic: Eclipse might be back on Raspberry Pi
Replies: 10
Views: 1721

Re: Eclipse might be back on Raspberry Pi

Need to make myself for just forum/mail list post with what I've done and ask for help/offer help to make proper version of Eclipse for arm64... I'll move it up on my todo list :) ... especially now I am using Eclipse or RPi every second day - with such a good weather and other circumstances I've re...
by clicky
Mon Aug 10, 2020 1:38 pm
Forum: Java
Topic: Eclipse might be back on Raspberry Pi
Replies: 10
Views: 1721

Re: Eclipse might be back on Raspberry Pi

I'm aware of that (unfortunate) fact. I've tried to update and ended up with unusable instalation. I think it is enough to disable "Latest Eclipse Release" (or maybe all software sites?) not to receive updates. Could the updates be disabled by default? I couldn't find the place where to do that. I'...
by clicky
Mon Aug 10, 2020 10:50 am
Forum: Java
Topic: Eclipse might be back on Raspberry Pi
Replies: 10
Views: 1721

Re: Eclipse might be back on Raspberry Pi

This is really a great work, thanks. I've tested it on my own Ubuntu Mate arm64 image on RPi4 with 4GB and it works perfectly. I've imported couple of my (quite large) C/C++ projects, and all was working without any issue. I've tested it also on Odroid C2 (Armbian Ubuntu 20.04), which only has 2GB ...
by clicky
Sun Aug 09, 2020 5:29 pm
Forum: Other programming languages
Topic: Anyone using Rust on a PI ?
Replies: 199
Views: 30181

Re: Anyone using Rust on a PI ?

Exactly. So we agree. The C language syntax and semantics may well be able to generate code that can live in a handful of bytes or RAM. But I'm pretty sure we cannot expect to be using standard library functions like printf in that space. Floating point support is almost certainly impossible. I was...
by clicky
Sat Aug 08, 2020 1:31 pm
Forum: General discussion
Topic: How to drive Brushless DC motor with built in driver and no documentation?
Replies: 21
Views: 1077

Re: How to drive Brushless DC motor with built in driver and no documentation?

:D It is definitively worth following! Also, your project has plenty of scope for gentle over-enginnering and generally trying to do thing 'right' way just for the sake of it. For instance - just imagine you can spend time (money and even more time!) on big power controller (it almost seems like rig...
by clicky
Sat Aug 08, 2020 1:17 pm
Forum: Other programming languages
Topic: Anyone using Rust on a PI ?
Replies: 199
Views: 30181

Re: Anyone using Rust on a PI ?

Didn't PIC µController have some strange bit size data in ROM (eeprom?). Or maybe in memory, too? I don't think it's same as with Atmel's stuff where it is just trimmed down 16bit or something like that... Maybe I just imagined it - it was a decade or more ago ¯\_(ツ)_/¯ And on that tangent - Rust on...

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