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by plugwash
Sun Jun 14, 2020 11:35 am
Forum: Networking and servers
Topic: PoE hat?
Replies: 6
Views: 402

Re: PoE hat?

Brilliant, thank you. I've noticed that the PoE hat also blocks the GPIO pins - one solution is to get GPIO extensions but i've found this: https://thepihut.com/products/mini-power-over-ethernet-poe-expansion-board-for-raspberry-pi-4-no-fan Looking at that - would you have any reservations? My imme...
by plugwash
Sun Jun 14, 2020 9:41 am
Forum: Networking and servers
Topic: PoE hat?
Replies: 6
Views: 402

Re: PoE hat?

If you are just powering the Pi4 and some low current perhipherals then the current PoE hat should be ok, but if you load it down with power-hungry peripherals then you may have problems. Volt drop on the supply cable shuoldn't be an issue, PoE operates at 48V and the hat converts that to the 5V nee...
by plugwash
Wed Jun 10, 2020 8:23 pm
Forum: Beginners
Topic: Building a digital clock including 3 digit milliseconds
Replies: 7
Views: 413

Re: Building a digital clock including 3 digit milliseconds

Hi, I want to create a simple digital clock with 7-segment displays. 2 segments for hours, 2 for minutes and 2 for seconds, but I want to have also milliseconds displayed with 3 segments. Im absolutely new in this, so my basic question would be: are 7-segment displays capable of accurately displayi...
by plugwash
Wed Jun 10, 2020 2:36 am
Forum: General discussion
Topic: Recommended ram size
Replies: 33
Views: 1640

Re: Recommended ram size

Hi Forum! Im planing to buy my 5th Raspberry Pi to run at home. It will be run mostly as headless and will use RealVNC, SSH, Pi-Hole, ddclient, LAMP-server, docker, bittorrents, embedded development, and similar. What RAM-size do you recommend for Raspberry Pi 4? It was so much easier with previous...
by plugwash
Wed Jun 10, 2020 2:30 am
Forum: General discussion
Topic: Question to Raspberry Pi Foundation
Replies: 44
Views: 2465

Re: Question to Raspberry Pi Foundation

The basic problem being that you can't tell cold glass from hot glass just by looking at it.) Similar issues apply when soldering too, especially when hot air or infrared gear is in use. An item that is hot but not red hot doesn't really look any different from a room temperature item. Metal object...
by plugwash
Wed Jun 10, 2020 12:54 am
Forum: C/C++
Topic: New major release of GCC
Replies: 119
Views: 8718

Re: New major release of GCC

Perfectly normal if you have more than one CPU core.
by plugwash
Tue Jun 09, 2020 11:12 pm
Forum: Raspberry Pi OS
Topic: STICKY: Buster bug report thread
Replies: 364
Views: 90068

Re: STICKY: Buster bug report thread

What exactly were you using to clone the card?
by plugwash
Mon Jun 08, 2020 10:54 pm
Forum: Raspberry Pi OS
Topic: Issue with apt, mirror resolution
Replies: 23
Views: 2008

Re: Issue with apt, mirror resolution

Apologies, it seems the same mirror was added to the redirection system twice under different names.

Should be fixed now.
by plugwash
Mon Jun 08, 2020 7:30 pm
Forum: Raspberry Pi OS
Topic: Issue with apt, mirror resolution
Replies: 23
Views: 2008

Re: Issue with apt, mirror resolution

JohnDoo wrote:
Mon Jun 08, 2020 3:48 pm
Issue is still present.
Can you post the complete output of your failing command so I can check if yours is the same issue or a different one.
by plugwash
Sun Jun 07, 2020 10:06 pm
Forum: Raspberry Pi OS
Topic: Issue with apt, mirror resolution
Replies: 23
Views: 2008

Re: Issue with apt, mirror resolution

I have pulled that mirror for now.
by plugwash
Mon Jun 01, 2020 12:40 am
Forum: Advanced users
Topic: [SOLVED] The certificate of `archive.raspberrypi.org` has expired
Replies: 28
Views: 2214

Re: [SOLVED] The certificate of `archive.raspberrypi.org` has expired

My understanding is it's a little more subtle than that. GNUtls (used by apt and by wget on Debian/Raspbian, but NOT by wget on Ubuntu and NOT most web browsers) seems to be the main cause of issues here. There is a bug report at https://gitlab.com/gnutls/gnutls/-/issues/1008 It's apparently been fi...
by plugwash
Sun May 31, 2020 10:33 pm
Forum: Advanced users
Topic: I think there's a bug in NOOBS with very large XDHC SD cards.
Replies: 31
Views: 1614

Re: I think there's a bug in NOOBS with very large XDHC SD cards.

I would suggest doing a few experiments to try and narrow down the cause

Does cluster size have an impact? does starting from a smaller partition on the larger card work?
by plugwash
Sun May 31, 2020 7:00 pm
Forum: Off topic discussion
Topic: Raspberry Pi mouse/keyboard
Replies: 3
Views: 887

Re: Raspberry Pi mouse/keyboard

Yes, the raspberry pi keyboard can be used on an android phone/tablet. I presume the mouse can too but I don't personlly own one to test (I have tested the keyboard in combination with other mice though). There are a couple of caveats to be aware of. 1. The phone/tablet must support host mode, some ...
by plugwash
Sat May 30, 2020 12:00 pm
Forum: Python
Topic: Python Packages Not Installing
Replies: 1
Views: 208

Re: Python Packages Not Installing

You need to use "pip3" to install stuff for python3.
by plugwash
Thu May 28, 2020 2:06 pm
Forum: General discussion
Topic: Why moving to 64bit?
Replies: 273
Views: 39781

Re: Why moving to 64bit?

I conclude that there is no downside in terms of performance or memory space with 64 bit over 32 bit and that anyone making such claims has not done any measurements and hence no not of what they speak. I conclude that you are taking one example and extrapolating too much. Your code deals with a lo...
by plugwash
Thu May 28, 2020 1:48 pm
Forum: Raspberry Pi OS
Topic: Goodbye Raspbian hello Raspberry Pi OS
Replies: 41
Views: 6926

Re: Goodbye Raspbian hello Raspberry Pi OS

Great,this will finally stop the confusion on the ARM vs x86 OS naming !! Raspbian.org has still says Raspbian is a community funded and supported free software effort. Note: Raspbian is not affiliated with the Raspberry Pi Foundation. Raspbian was created by a small, dedicated team of developers t...
by plugwash
Wed May 27, 2020 2:58 pm
Forum: General discussion
Topic: Security: "BIAS" - Bluetooth Impersonation AttackS
Replies: 11
Views: 851

Re: Security: "BIAS" - Bluetooth Impersonation AttackS

You need it to be birectional. The Pi end has a legal antenna and transmission power. I'll agree on the transmit power, but note that generally antennas are reciprocal, if the attacker has a high-gain antenna (that results in illegally high EIRP) that will improve range in both directions (at the c...
by plugwash
Fri May 22, 2020 12:36 pm
Forum: Off topic discussion
Topic: Python 2 EoL...at least in theory
Replies: 51
Views: 4796

Re: Python 2 EoL...at least in theory

They can almost certainly be automated. Worst case, write a Python 2 interpreter in Python 3 and you should be able to continue running Python 2 within Python 3. I haven't done anything very gnarly with Python, but 2 and 3 are mostly fairly compatible. The problem is python is such a dynamic langua...
by plugwash
Thu May 21, 2020 4:50 pm
Forum: General discussion
Topic: case/adapter soloutions for pi4 with HDD/SSD
Replies: 8
Views: 651

case/adapter soloutions for pi4 with HDD/SSD

Does anyone have any reccomendations for case/adapter soloutions for a Pi4 with HDD/SSD?

I'm aware of the geekworm one, but at £28 for the case, £36.39 for the adapter board and £18.59 for the power brick it's rather on the expensive side.
by plugwash
Thu May 21, 2020 3:14 pm
Forum: General discussion
Topic: 110V DC for USB-C Power Supply for Raspberry Pi 4
Replies: 27
Views: 1524

Re: 110V DC for USB-C Power Supply for Raspberry Pi 4

In general universal-input switch mode power supplies are designed for a range of nominal AC RMS input voltages from 100V (Japan) to 240V (former UK voltage). Beyond this they will have an allowance of about 10% for supply tolerances and maybe another 5% for volt drop in wiring, so the designers wil...
by plugwash
Wed May 20, 2020 5:13 am
Forum: General discussion
Topic: Need help identifying fried components
Replies: 14
Views: 733

Re: Need help identifying fried components

The tan color says those are capacitors not resistors. Those capacitors are clearly associated with the PMIC, which is U2 on the public schematic. So it should be possible with a bit of work with a multimeter to figure out which capacitor is which. The problem you may find is that when you physicall...
by plugwash
Sat May 16, 2020 5:02 am
Forum: Raspberry Pi OS
Topic: Broken Upgrade Mirror
Replies: 2
Views: 266

Re: Broken Upgrade Mirror

Can you try again? I just had a look on our side and it seems the mirror redirection system has detected the mirror as down, so you shouldn't be directed to it anymore.
by plugwash
Thu May 14, 2020 10:04 pm
Forum: General discussion
Topic: Largest SD card supported by PI hardware?
Replies: 21
Views: 1386

Re: Largest SD card supported by PI hardware?

Nope, section 4.3.14 explicitly states that SDHC/SDXC/SDUC cards use a fixed 512 byte block size.
by plugwash
Thu May 14, 2020 9:50 pm
Forum: General discussion
Topic: Largest SD card supported by PI hardware?
Replies: 21
Views: 1386

Re: Largest SD card supported by PI hardware?

2TB is the point at which a 32-bit count/index of 512 byte sectors hits it's limit. One problem that this causes is that pure MBR partitions tables are no longer useful. This can be worked-around using a MBR/GPT hybrid partition table but that isn't necessarily the only problem. It seems that since ...

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