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by W. H. Heydt
Sun Dec 22, 2019 3:02 am
Forum: Beginners
Topic: Is it dangerous to leave the pi connected to the internet ??
Replies: 11
Views: 683

Re: Is it dangerous to leave the pi connected to the internet ??

You must change the password. Userid=pi with password=raspberry is known universally. Well... Yes, it's universally known to be the default, but "must" change it is a bit strong. It's rather highly recommended that you change it, *especially* if the Pi is connected to a LAN (let alone the internet).
by W. H. Heydt
Sat Dec 21, 2019 11:54 pm
Forum: Beginners
Topic: Is it dangerous to leave the pi connected to the internet ??
Replies: 11
Views: 683

Re: Is it dangerous to leave the pi connected to the internet ??

Hi, i have a raspberry pi 3 b and i want to leave it connected to the internet for my needs, but i keep finding in forums that it's dangerous to do that since hackers can get access to it. Here is what i want to do : 1) leave the pi connected as i said earlier. Not a problem in and of itself. 2) co...
by W. H. Heydt
Sat Dec 21, 2019 11:40 pm
Forum: Beginners
Topic: Which Raspberry Pi and which setup to choose for my 10 year old son?
Replies: 12
Views: 611

Re: Which Raspberry Pi and which setup to choose for my 10 year old son?

Given what happened, you might look at the Pi0WH, which is a Pi0W with the header pins already in place. As a better (in my personal opinion) option would be a Pi4B. Since he's unlikely to be doing really heavy development work, the 2GB model would probably do just fine.
by W. H. Heydt
Sat Dec 21, 2019 10:10 pm
Forum: Troubleshooting
Topic: Save files where I want them?
Replies: 11
Views: 458

Re: Save files where I want them?

How do I get root permissions? If you have to ask, it's probably a good idea to think long and hard about why you need to use them. Directory permissions are there to protect you and to protect the system files from you. You should save all files that pertain just to you in the directory tree of yo...
by W. H. Heydt
Sat Dec 21, 2019 9:52 pm
Forum: General discussion
Topic: Pi Zero W multi purchases
Replies: 64
Views: 3572

Re: Pi Zero W multi purchases

What it comes down to - if you want multiple Zero's you have to pay $5 for them. Still not a lot of cash for what you get!! I think you mean "an *extra* $5" for them. Another route to suggest would be to market a 6-pack or 10-pack of Pi0s or Pi0Ws with the unit price higher, such that a 6-pack woul...
by W. H. Heydt
Sat Dec 21, 2019 9:48 pm
Forum: General discussion
Topic: Stock
Replies: 5
Views: 373

Re: Stock

trejan wrote:
Sat Dec 21, 2019 6:47 pm
If he wants to use a Pi Zero then he's going to either have to pay more than $5 or deal with annoying stock issues.
Or--possibly--pay more AND use a different board, such as a Pi0WH or some version of CM.
by W. H. Heydt
Sat Dec 21, 2019 9:46 pm
Forum: General discussion
Topic: Trying to run Windows XP on Raspbian in QEMU
Replies: 12
Views: 677

Re: Trying to run Windows XP on Raspbian in QEMU

GlowInTheDark wrote:
Sat Dec 21, 2019 11:02 am
And people will want to do it. So, there should be a supported way to do it.
Supported by whom? Surely it's not the RPFs job to support MS x86 software on Pis...
by W. H. Heydt
Sat Dec 21, 2019 6:29 pm
Forum: Troubleshooting
Topic: Make Pi power failure free :(
Replies: 10
Views: 413

Re: Make Pi power failure free :(

The subject should probably be "How does one make a Pi power failure resistant?" And there are several replies to that point already. As for making it so there is never a power failure affecting a Pi, that depends in substantial part on how much in the way of resources one is willing to throw at the...
by W. H. Heydt
Sat Dec 21, 2019 5:07 am
Forum: General discussion
Topic: Programming/Coding with Raspberry PI
Replies: 2
Views: 187

Re: Programming/Coding with Raspberry PI

First thing to realize is that any software that runs on Windows won't run on a Pi, unless there is an ARM/Linux version. So (for example) Chromium, not Chrome. Plenty of people are running web sites on Pis so there is no intrinsic reason why what you want to do wouldn't work. You make have to get u...
by W. H. Heydt
Sat Dec 21, 2019 3:03 am
Forum: General discussion
Topic: Cant install NX Witness
Replies: 5
Views: 272

Re: Cant install NX Witness

It appears that NX Witness is intended to run under MS Windows (and, therefore, probably on x86 hardware). The Pi runs Linux on ARM cpus.
by W. H. Heydt
Sat Dec 21, 2019 2:59 am
Forum: Compute Module
Topic: Conxion sd card to module computer CM3+
Replies: 7
Views: 506

Re: Conxion sd card to module computer CM3+

There are two versions according to the documentation module computer cm3 + is more complete than cm3 Lite I have the CM3 + There are 4 versions of the CM3+. The CM3L+ has no on-board eMMC. The other three models have 8GB, 16GB or 32GB of eMMC flash. Do you have a CM3L+ or one of the ones with on-b...
by W. H. Heydt
Sat Dec 21, 2019 2:54 am
Forum: General discussion
Topic: Is there a Raspberry Pi 4 "Slim" version?
Replies: 27
Views: 1502

Re: Is there a Raspberry Pi 4 "Slim" version?

Gavinmc42 wrote:
Sat Dec 21, 2019 1:27 am
The opposite of what the OP asked, but a slim Pi4 shoehorned into a keyboard?
Sounds more like a CM type of use, which could be done now with a CM3 or CM3+, and eventually (maybe) with a CM4.

And...perhaps that is what the OP should be pointed towards.
by W. H. Heydt
Fri Dec 20, 2019 11:43 pm
Forum: General discussion
Topic: Is there a Raspberry Pi 4 "Slim" version?
Replies: 27
Views: 1502

Re: Is there a Raspberry Pi 4 "Slim" version?

If the parts needed for the A+ version of the RPI4 computer will be similar or the same as the RPI4B computer then wouldn't a RPI computer with less features be not only lower in cost the computer should cost less to produce, because this RPI computer with less features will need less hardware over...
by W. H. Heydt
Fri Dec 20, 2019 9:01 pm
Forum: Beginners
Topic: First day with Raspberry Pi. How to use it?
Replies: 16
Views: 847

Re: First day with Raspberry Pi. How to use it?

If you want then to set it up to operate 'headless' a VNC server (RealVNC) comes ready-installed on the Pi. However, the easiest way to set this up initially would be to connect a monitor, mouse, and keyboard to start with. Any USB keyboard & mouse will be fine, and any screen with an HDMI input. I...
by W. H. Heydt
Fri Dec 20, 2019 8:55 pm
Forum: Compute Module
Topic: Conxion sd card to module computer CM3+
Replies: 7
Views: 506

Re: Conxion sd card to module computer CM3+

Which model of CM3+ do you have? Only the CM3L+ has provision for an SD card interface. On the other versions, that interface goes to the on-board eMMC flash storage.
by W. H. Heydt
Fri Dec 20, 2019 2:54 pm
Forum: General discussion
Topic: Digital signage
Replies: 3
Views: 221

Re: Digital signage

I'm able to loop through various sorts of images for hours on end using fbi.
by W. H. Heydt
Fri Dec 20, 2019 4:59 am
Forum: Off topic discussion
Topic: Best Raspberry Pi Alternatives 2019
Replies: 63
Views: 16699

Re: Best Raspberry Pi Alternatives 2019

Hi, The NanoPi NEO Plus2 is less than half the size of the Raspberry Pi, but it packs a performance and storage punch. Specs are much closer to a Pi3B+ (4 x Cortex-A53 vs. 4 x Cortex-A72 on the Pi4B). Faster Ethernet, but fewer USB ports. Same RAM (1GB). Oddly enough, their default OS (Ubuntu) is s...
by W. H. Heydt
Fri Dec 20, 2019 4:47 am
Forum: Troubleshooting
Topic: Setting up faux pas
Replies: 2
Views: 152

Re: Setting up faux pas

Go into raspi-config (or the GUI wrapper for it) and change the overscan setting.
by W. H. Heydt
Fri Dec 20, 2019 4:45 am
Forum: Troubleshooting
Topic: after copy, file doesn't work anymore
Replies: 2
Views: 133

Re: after copy, file doesn't work anymore

Also... Notice that the original config, both file names are in green. After copying, "cpyfile" is gray. That's a clue that something has changed. In this case, the execute permission has been turned off. What is good to do when playing around with things is to do "ls -l". That will show you the per...
by W. H. Heydt
Fri Dec 20, 2019 4:38 am
Forum: Beginners
Topic: First day with Raspberry Pi. How to use it?
Replies: 16
Views: 847

Re: First day with Raspberry Pi. How to use it?

startx is returning "Command not found". Is it the rasperian version (I'm using Buster Lite)? or what am I doing wrong? Yes. The "Lite" versions of Raspbian don't have any of the GUI packages in them. If you hunt around, you can find out how to add Xwindows to Raspbian Lite, or you can do it the ea...
by W. H. Heydt
Thu Dec 19, 2019 4:55 am
Forum: General discussion
Topic: Two ethernet ports
Replies: 15
Views: 687

Re: Two ethernet ports

plugwash wrote:
Tue Dec 17, 2019 3:58 pm
At least in theory, USB3 should be able to max out a gigabit port, I'm not sure how things work out in practice though.
Given that the Pi3B+ managed to eke out 300+Mb/s on a USB 2 bus, the PCIe/USB 3 on the Pi4B shouldn't have any trouble hitting 1Gb/s.
by W. H. Heydt
Thu Dec 19, 2019 12:02 am
Forum: General discussion
Topic: New Pi 4B v1.2?
Replies: 206
Views: 20675

Re: New Pi 4B v1.2?

One person has now indicated that they have a RP4 with an apparently fully working USB C power input, not sure how word that correctly but you get my gist. https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=259629 They haven't confirmed that they have a v1.2 RP4 yet but it would seem likely. S...
by W. H. Heydt
Wed Dec 18, 2019 8:42 pm
Forum: General discussion
Topic: Which is faster Read/write, SD card or SSD?
Replies: 6
Views: 481

Re: Which is faster Read/write, SD card or SSD?

On a Pi4B, SD card: 50Mb/s. SATA-III: 6Gb/s, USB 2.0: 480Mb/s, USB 3.0: 5Mb/s, on a P4B, the USB ports connect over a single 4Gb/s PCIe link. Some data capacity will be lost due to protocol overhead. In any case, even USB 2.0 can transfer data nearly an order of magnitude faster than the SD card can.
by W. H. Heydt
Wed Dec 18, 2019 3:31 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 don't boot whit all
Replies: 20
Views: 481

Re: Raspberry Pi 4 don't boot whit all

What version of which OS are you trying to use?
by W. H. Heydt
Tue Dec 17, 2019 6:13 pm
Forum: General discussion
Topic: Is from PC usb port OK for power supply?
Replies: 18
Views: 806

Re: Is from PC usb port OK for power supply?

Yes pi 4. My phone charger says: 9V, 1.67A or 5V, 2A. Could I do any damage if I use that for 1-2 days? Thank you Try it and prepare to buy a new RPi4B do it again and same result.... you'll have to buy again new RPi4B ....until you buy a proper power supply unit for the RPi4B the RPF power supply ...

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