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by Gavinmc42
Tue Jun 25, 2019 8:36 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 342
Views: 15208

Re: Raspberry Pi 4 Thread - general discussion

I was totally out in the predicted Pi4 time frame but got close to guessing the rest https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=156434&p=1141774&hilit=PI4+prediction#p1141774 Two HDMIs, did anyone predict that? Q1) Are we going to get a peak at all that engineering work that went into t...
by Gavinmc42
Tue Jun 25, 2019 8:06 am
Forum: Beginners
Topic: Raspberry pi 4 sold out?
Replies: 13
Views: 559

Re: Raspberry pi 4 sold out?

My usual supplier only had the 4B1 left, others due early July. Not only a new Pi but 3 versions had to be made and shipped out around the World. I suppose some suppliers might have only got the versions they thought would sell? With some forward thinking it could have been announced earlier and fan...
by Gavinmc42
Tue Jun 25, 2019 6:10 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 342
Views: 15208

Re: Raspberry Pi 4 Thread - general discussion

I saw one benchmark, about 500ma+ for old 3B+ and 600ma+ for 4B.
When running the 4B was a tiny bit lower, er 1.14amp v 1.12Amp?
by Gavinmc42
Tue Jun 25, 2019 1:33 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 342
Views: 15208

Re: Raspberry Pi 4 Thread - general discussion

blender runs fine on a rasberry pi 3 with the opengl driver activated and it even is in the raspbian repository. (i just needed to change some settings regarding the opengl selection method in blender's preferences.) I have had Blender4 Artists 0.95 working in Gentoo64 on a 3B+, it had a more up to...
by Gavinmc42
Tue Jun 25, 2019 12:31 am
Forum: General discussion
Topic: The RPi4 makes no sense to me. Fight me!
Replies: 17
Views: 697

Re: The RPi4 makes no sense to me. Fight me!

There is a big market for embedded displays apparently. I think Eben said they were surprised how many go into those products. 2 x 4K HDMI displays probably has this market drooling? 4B+? I guess that means these new Pi4's are named 4B1, 4B2, 4B4? Two screens means coding on one, output on the other...
by Gavinmc42
Mon Jun 24, 2019 11:48 am
Forum: Compute Module
Topic: PI 4 Compute module with pci-e?
Replies: 7
Views: 565

Re: PI 4 Compute module with pci-e?

On the Pi4 the PCIe is used to connect the USB hub, and its single channel. Not sure what else it could be used for, sure there lots of interesting things, but on the Pi4 itself, the PCIe bus is not exposed. Q1) On a Compute the pci-e would need to be exposed? Therefore other uses for it, modems, w...
by Gavinmc42
Mon Jun 24, 2019 11:42 am
Forum: Gentoo
Topic: Updated 64-bit Gentoo Image for RPi3 Released (now also for RPI3B+)
Replies: 129
Views: 44501

Re: Updated 64-bit Gentoo Image for RPi3 Released (now also for RPI3B+)

Just that pesky new Pi4 to port to now ^-^ Yep the Pi4 with dual screens and 4GB is now a serious developers box :D Will be interesting to see how those WebGL samples runs now :lol: I have been having trouble with 1.4.2 but it could be the cards or Etcher or even Win10. Need to try writing cards on...
by Gavinmc42
Mon Jun 24, 2019 11:34 am
Forum: Compute Module
Topic: PI 4 Compute module with pci-e?
Replies: 7
Views: 565

Re: PI 4 Compute module with pci-e?

Wow, that's an idea.
Easier to make Pi4 laptop with serious storage?

Q1) What else can be down with pci-e?
It is not just memory these days that use pci-e.
That might need a different form factor, probably worth it?
by Gavinmc42
Mon Jun 24, 2019 11:23 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 342
Views: 15208

Re: Raspberry Pi 4 Thread - general discussion

1GB for embed Pi's, 2GB for youtubers, 4GB for developers? Need to Benchmark Browsers to see if there is any advantage for the 4GB over the 2GB? Oh dear will need to buy 2 of each size :D I always get a spare. Seems likely that the twin HDMI will stay as micro Thanks Jamesh. Q1) Will the Zero change...
by Gavinmc42
Mon Jun 24, 2019 10:52 am
Forum: General discussion
Topic: Does Bluetooth v5 mean 5.0 or 5.1?
Replies: 1
Views: 114

Re: Does Bluetooth v5 mean 5.0 or 5.1?

As far as I know Cypress don't do 5.1 yet, I spent some time looking for it on their webpages. I would be nice if this was a software update, but I suspect antenna diversity hardware is needed in the chip? Nordic have 5.1 and modules are available from third parties. Could a Pi bot be made and use 5...
by Gavinmc42
Mon Jun 24, 2019 10:45 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 342
Views: 15208

Re: Raspberry Pi 4 Thread - general discussion

Can you PLEASE stop these brain dumps. Sorry, just me thinking out aloud, I will add Question numbers and ? marks. Will have to think about whether or not it's going to be worth the aggro! :roll: You could wait for the Pi5 which now will likely also have two micro HDMIs? Really so much agro about a...
by Gavinmc42
Mon Jun 24, 2019 9:04 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 342
Views: 15208

Re: Raspberry Pi 4 Thread - general discussion

Also, perhaps you should have read the documentation on the new peripheral alt settings: https://www.raspberrypi.org/documentati ... minary.pdf Is there any register documentation yet for all these nice new i2c, uarts etc? They are going to be real handy especially for those big robotics projects. ...
by Gavinmc42
Mon Jun 24, 2019 8:35 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 342
Views: 15208

Re: Raspberry Pi 4 Thread - general discussion

Could a Pi 4 host 4 USB Pi 4's? :o Yes, yes, yes, yes. No idea what you mean. Power a 2nd Pi4 via the 1st Pi4 USB port and the 2nd one is running OTG gadget mode stuff? Might need BIG power supply? Old VC5 stuff mentions Vulkan and OpenCL. https://www.phoronix.com/scan.php?page=news_item&px=Broadco...
by Gavinmc42
Mon Jun 24, 2019 7:28 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 342
Views: 15208

Re: Raspberry Pi 4 Thread - general discussion

The dual Micro HDMI was the surprise :D Needed so Pi's can be for my development PC? Guess I can retire that old Celeron Linux box now. But the big surprise was the time frame, a bunch of stars must really have been in alignment. Can we have some history of how it all came about now? What caused pro...
by Gavinmc42
Fri Jun 21, 2019 2:08 am
Forum: General discussion
Topic: Custom Operating System
Replies: 3
Views: 231

Re: Custom Operating System

https://www.youtube.com/watch?v=feSjnKdc_hY Linux OS's have the Desktop, usually X11 based separate from the OS. Some OS's have the GUI as part of the OS, ie Oberon. Android uses Linux OS but the GUI is not X11 based. You can make OS's without a GUI, FreeRTOS etc. Don't get the look confused with th...
by Gavinmc42
Fri Jun 21, 2019 1:49 am
Forum: Automation, sensing and robotics
Topic: Choosing motors
Replies: 36
Views: 2273

Re: Choosing motors

I once had to drive two electric linear rams at the same speed for a solar panel tilt mechanism. I used one of those small DSP micros from Microchip which had two encoder inputs. All I did was keep the counts within +/-5 or 10 of each other, slow one down when it gets ahead etc. Probably the simples...
by Gavinmc42
Thu Jun 20, 2019 1:09 am
Forum: Automation, sensing and robotics
Topic: Choosing motors
Replies: 36
Views: 2273

Re: Choosing motors

Is it important where you buy the magnet? Not really important, I think most are made in China anyway. I get from Supermagnetman because he has a very wide range and I get 100's at a time. There are wholesalers that might restock his stuff, industrial suppliers not online retailers. Those 5mm colou...
by Gavinmc42
Wed Jun 19, 2019 12:01 am
Forum: Gaming
Topic: Unity in Raspberry Pi 3 or other small computers?
Replies: 7
Views: 6755

Re: Unity in Raspberry Pi 3 or other small computers?

Sakaki has just released a new Gentoo64, it has GL support https://github.com/sakaki-/gentoo-on-rpi3-64bit Have not tried this new version yet but previous releases can run WebGL examples sort of. https://webglsamples.org/ I use these to test Chromium and Firefox, which also have new versions in thi...
by Gavinmc42
Mon Jun 10, 2019 11:48 pm
Forum: Raspbian
Topic: Enhanced graphics for Raspbian Lite
Replies: 11
Views: 397

Re: Enhanced graphics for Raspbian Lite

Ok, headless mode not X11, never noticed that before. The default font can be changed? That Ubuntu font still looks like pixels so different rendering would not make any difference. It is also a san serif font, which will look different than the Raspbian font. Does anyone know how to change the defa...
by Gavinmc42
Mon Jun 10, 2019 7:51 am
Forum: Raspbian
Topic: Enhanced graphics for Raspbian Lite
Replies: 11
Views: 397

Re: Enhanced graphics for Raspbian Lite

It is probably the X11 Desktop Design that makes it look better. You can start with Raspbian Lite and install a X11 Desktop. Many choices of X11 Desktops based on different Windowing managers. A search will find how too and some images. https://www.raspberrypi.org/forums/viewtopic.php?f=66&t=133691&...
by Gavinmc42
Mon Jun 10, 2019 2:49 am
Forum: Raspbian
Topic: The much heralded "Buster"- When? [now!]
Replies: 28
Views: 2275

Re: The much heralded "Buster"- When?

Been a lot of testing and more Pi stuff has been up-streamed into Linux. Mid year was what I had been hearing last year/start of this year, getting close to that now. Buster freeze was in March 2019. So we are about half way though the 6 months the last one took? Before Xmas anyway? Making Raspbian ...
by Gavinmc42
Mon Jun 10, 2019 1:37 am
Forum: General discussion
Topic: A better raspbian for pi zero
Replies: 20
Views: 748

Re: A better raspbian for pi zero

Solved it by forcing testing to be signed off by the developer as usable on a VERY slow machine before passing over to the users for testing and woe betide the developer if the user said the result was slow :lol: :D Linux Mint on old Celeron box makes for a good pretest box for porting code to Pi's...
by Gavinmc42
Mon Jun 10, 2019 1:11 am
Forum: Beginners
Topic: Drone Swarm
Replies: 8
Views: 374

Re: Drone Swarm

Use three of these wheels? https://www.rotacaster.com.au/shop/35mm-rotacaster-wheels/index Four will work if you have some sort of suspension. Might be able to use small stepper motors in direct drive, size 11? Nothing to wear out compared to DC gear motors which will need speed control for best ope...
by Gavinmc42
Sun Jun 09, 2019 9:34 am
Forum: General discussion
Topic: A better raspbian for pi zero
Replies: 20
Views: 748

Re: A better raspian 4 pi zero

PiCore Linux runs pretty fast, very small too.
Even the TC Desktop is not too bad.

Raspbian is where you start learning , then you move on to other options.
If I need the Raspbian OS I update on a Pi3B then move the SD card to the Zero.
by Gavinmc42
Sun Jun 09, 2019 9:03 am
Forum: Beginners
Topic: Drone Swarm
Replies: 8
Views: 374

Re: Drone Swarm

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