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by fanoush
Tue Sep 17, 2019 9:30 pm
Forum: Advanced users
Topic: Pi4 64-bit raspbian kernel for testing - Focus on Pi4
Replies: 106
Views: 11111

Re: Pi4 64-bit raspbian kernel for testing - Focus on Pi4

can I get 64bit kernel via rpi-update without changing my stable 32bit kernel too?
by fanoush
Wed Sep 04, 2019 11:31 am
Forum: Raspbian
Topic: Pi 4 with Raspbian Stretch?
Replies: 9
Views: 640

Re: Pi 4 with Raspbian Stretch?

I am running the old stretch I used before in a chroot on pi4. With schroot it even shares home directory and other configs so it is relatively painless. I currently use it to launch pyhoca-gui (remote access to x2go servers) which seems to be broken in Buster for me. So that is another solution to ...
by fanoush
Sat Aug 24, 2019 11:44 am
Forum: General discussion
Topic: Does the foundation produce the Zero under cost?
Replies: 12
Views: 642

Re: Does the foundation produce the Zero under cost?

I don't believe it's made under-cost Maybe it is not made under cost but Zero for $5 or Zero W for $9 is sold under cost. That's why shops can limit how many of them they can sell you. Some shops will sell you one piece ever and refuse second because they are simply losing money on this. Some will ...
by fanoush
Wed Aug 21, 2019 8:47 am
Forum: General discussion
Topic: default 100 meg swap file
Replies: 23
Views: 905

Re: default 100 meg swap file

Yes, in general, swapping to SDCard is bad, but it's better than letting the system kill processes to free RAM. This would be true if the default value was not 100MB. Without swap you get killed processes but the system works. With 100MB swap this gets filled almost instantly and you get swapping h...
by fanoush
Tue Jul 30, 2019 5:51 am
Forum: Off topic discussion
Topic: Espruino on $9.99 fitness tracker
Replies: 6
Views: 3790

Re: Espruino on $9.99 fitness tracker

Just a heads up that this DS-D6 is for $4.99 now. And with free shipping if you take more than one. Over half a year it went steadily down dollar by dollar but how much lower this could go? Now it is already lower than 10 qty unit price for nrf52832 chip at digikey :-)
by fanoush
Thu Jul 25, 2019 8:15 am
Forum: Bare metal, Assembly language
Topic: Circle - C++ bare metal environment (with USB)
Replies: 231
Views: 56782

Re: Circle - C++ bare metal environment (with USB)

bluetooth stack that I have written mostly from scratch. I will, in the upcoming months, make the source code, as well as my mods to Circle, and a number of other interesting additions to Circle, public. In due time. Amazing, thanks, looking forward to your contributions. As for bluetooth stack - t...
by fanoush
Tue Jul 23, 2019 1:36 pm
Forum: RISCOS
Topic: How long will it take for Risc OS to be on todays level of Raspbian?
Replies: 40
Views: 5061

Re: How long will it take for Risc OS to be on todays level of Raspbian?

And because of the way that RISC OS works, it is very unlikley that adding more HW support will make a difference in the performance, it is a very different model than Linux, BSD, Windows, etc. In RISC OS most HW support is provided by modules that only interface with those modules and programs tha...
by fanoush
Tue Jul 23, 2019 12:30 pm
Forum: Advanced users
Topic: RaspberryPi 4: heatsink or fan
Replies: 50
Views: 21124

Re: RaspberryPi 4: heatsink or fan

The RPi 4B has a completely differing ports layout !! Yes, but that does not answer the question, it could still be universal enough to fit as it is not whole case. Anyway here is one for pi3 https://www.ebay.com/itm/362682376363 and indeed it looks different around hdmi ports and ethernet and also...
by fanoush
Tue Jul 23, 2019 12:17 pm
Forum: Advanced users
Topic: RaspberryPi 4: heatsink or fan
Replies: 50
Views: 21124

Re: RaspberryPi 4: heatsink or fan

I have one of those "radiator protection case" heatsink fins shown on ebay, but for a 3B. ... The exact model I got was actually this one, from Amazon: https://smile.amazon.com/gp/product/B07M8SH8TM/ Does the same item works also on the pi4? There are listings for Pi4 too but are more expensive so ...
by fanoush
Thu Jul 04, 2019 1:53 pm
Forum: General discussion
Topic: Just received my RPi4b/4GB - no HDMI output!!!
Replies: 75
Views: 6668

Re: Just received my RPi4b/4GB - no HDMI output!!!

My Pi4 finally arrived yesterday and I have same/similar issue with Motorola Atrix lapdock - the only device I currently have with micro hdmi input. So far tried hdmi_force_hotplug=1 hdmi_drive=2 config_hdmi_boost=11 but still blank screen with Pi4 after boot. This same microHDMI extension cable wit...
by fanoush
Thu Jun 27, 2019 12:32 pm
Forum: General discussion
Topic: (again) Raspberry Pi sleep/standby modes software support
Replies: 8
Views: 722

Re: (again) Raspberry Pi sleep/standby modes software support

I counted the number of SW engineers we have to support the Pi, 8 full time, 2 contractors. To do FKMS, Kernel support, Chromium optimisations, video drivers, camera and other peripheral support, Raspbian development, bug fixes and all the associated background tasks that go with all those. Now tak...
by fanoush
Thu Jun 27, 2019 11:28 am
Forum: Advanced users
Topic: RaspberryPi 4: heatsink or fan
Replies: 50
Views: 21124

Re: RaspberryPi 4: heatsink or fan

An aluminium case will be of no use unless it is thermally linked to the SOC Which is the case with 3B+ as understand it (unlike 3B) and possibly also Pi4 (sea also this and linked blogs). They explained it somewhere that the SOC is upside down in 3B+ and heat goes into board ground plane, metal co...
by fanoush
Thu Jun 27, 2019 8:34 am
Forum: Advanced users
Topic: Triple display with Raspberry Pi 4
Replies: 3
Views: 610

Re: Triple display with Raspberry Pi 4

There is also DPI on GPIO pins so that makes it four now :-)
On older Pis I think all three (HDMI,DSI,DPI) worked at the same time in some way.

And there are also those cheap Fresco Logic (FL2000) USB3.0 video cards (popular for SDR) that may work now with Pi4 too.
by fanoush
Thu Jun 27, 2019 8:24 am
Forum: Advanced users
Topic: RaspberryPi 4: heatsink or fan
Replies: 50
Views: 21124

Re: RaspberryPi 4: heatsink or fan

so I don't use the WiFi! Indeed. With 3B+ I use as a desktop I moved to wired ethernet too as I have it near. Also I play streamed games over Steam Link occasionally and the wireless in Pi3 has some performance issues documented here - it works fine but slows down every few (5, 10?) minutes killing...
by fanoush
Thu Jun 27, 2019 8:02 am
Forum: Advanced users
Topic: RaspberryPi 4: heatsink or fan
Replies: 50
Views: 21124

Re: RaspberryPi 4: heatsink or fan

With no case , I am not convinced the Pi4 needs any extra cooling at all (in the UK at least). Even better is to get aluminum case - it is both big heatsink and case. Especially with the 3B+ model the heat goes to the board itself so it is nicely transferred to the case (unlike with older 3B model ...
by fanoush
Wed Jun 26, 2019 1:14 pm
Forum: Raspbian
Topic: So when is Raspbian going to get a 64-bit kernel?
Replies: 5
Views: 939

Re: So when is Raspbian going to get a 64-bit kernel?

When you can have 64bit kernel with raspbian? You already missed it. https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=232684 https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=232417 https://github.com/sakaki-/raspbian-nspawn-64 It is 64bit kernel (as you wanted) and 32bit raspbian as ma...
by fanoush
Tue Jun 25, 2019 11:42 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 861
Views: 88365

Re: Raspberry Pi 4 Thread - general discussion

you may try to switch to old non-MESA closed source GPU drivers via raspi-config and see if it helps?
by fanoush
Tue Jun 25, 2019 10:43 am
Forum: Beginners
Topic: Raspberry pi 4 sold out?
Replies: 19
Views: 4074

Re: Raspberry pi 4 sold out?

If just looking at getting something better at the same price then the 1GB makes sense, but I would have thought an extra 1GB for $10 or an extra 3GB for $20 would lead people to choosing 4GB. Plus getting the most one can is insurance against finding one needs more in the future than initially tho...
by fanoush
Tue Jun 25, 2019 7:50 am
Forum: Beginners
Topic: Raspberry pi 4 sold out?
Replies: 19
Views: 4074

Re: Raspberry pi 4 sold out?

It is not sold out, there is still 2GB version here https://thepihut.com/products/raspberry-pi-4-model-b If you want specific RAM size only then please rename topic title. BTW, 2GB was my preferrred model so yesterday I ordered that one immediatelly, looks like I am a minority, everyone wants 1 or 4...
by fanoush
Mon Jun 24, 2019 8:43 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 861
Views: 88365

Re: Raspberry Pi 4 Thread - general discussion

The VC4 VPU is still there (and boots first). Bootcode.bin has moved to an on-board EEPROM so when we release Ethernet/USB mass-storage bootmodes, it'll be a bootloader upgrade and not a bootrom (new chip) upgrade. I see thanks. So I guess VPU still sets up the memory at startup then. How did you s...
by fanoush
Mon Jun 24, 2019 7:57 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 861
Views: 88365

Re: Raspberry Pi 4 Thread - general discussion

Is there still VC4 style (dual core) VPU? Does the ARM boot first or still the VPU?
by fanoush
Wed Jun 19, 2019 10:34 am
Forum: Troubleshooting
Topic: Raspberry Pi Z wWLan modules with defective HDMI?
Replies: 10
Views: 549

Re: Raspberry Pi Z wWLan modules with defective HDMI?

Anyway, what HawaiianPi said worked for me with multiple Zeros. I have same experience - with same monitor other Pi work but Zero does not show the picture unless increasing config_hdmi_boost. Also since it is miniHDMI often the additional mini to full hdmi adapter attached to same cable is enough t...
by fanoush
Mon Jun 17, 2019 2:44 pm
Forum: Raspbian
Topic: 64bit version for CM3+
Replies: 2
Views: 267

Re: 64bit version for CM3+

you can run 32bit raspbian with 64bit debian inside container, this is relatively painless with best of both worlds, see viewtopic.php?t=232417
by fanoush
Fri Jun 14, 2019 8:23 am
Forum: Python
Topic: hci0 fails to initialise while scanning for bluetooth-LE in 3b+
Replies: 2
Views: 215

Re: hci0 fails to initialise while scanning for bluetooth-LE in 3b+

I am not sure if I understood correctly what I've read previously but I think some of those libraries takeover the hci interface so the safest is to stop system bluetooth service via something like '/etc/init/d/bluetooth stop' before using it. On the other hand if your library is written on top of b...
by fanoush
Wed Jun 12, 2019 7:31 pm
Forum: Automation, sensing and robotics
Topic: irritating battery limits
Replies: 21
Views: 1392

Re: irritating battery limits

Also, I looked it up and google says that lithium batteries cannot charge while discharging. Am I not understanding something that would allow this to happen? The idea is that to charge and also run it at the same time you need to provide more power than what your robot needs. So you don't charge a...

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