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by W. H. Heydt
Wed Jan 22, 2020 4:35 pm
Forum: Beginners
Topic: Slow Pi Zero W
Replies: 8
Views: 344

Re: Slow Pi Zero W

I have recently changed a Pi0 to use Buster (from Stretch) and I too am finding it quite a bit slower in operation. I need the GUI. Opening a terminal window takes a couple of seconds, likewise the file viewer and the shutdown box. Leafpad is also incredibly slow. I have toyed with re-installing th...
by W. H. Heydt
Wed Jan 22, 2020 2:43 pm
Forum: General discussion
Topic: Future of raspberry pi - software related
Replies: 328
Views: 13541

Re: Future of raspberry pi - software related

it's easy to miss such things in the blog though. maybe you could do a raspbian release notes page. Boggle... I at least read the title of new blog posts every day. If it's about a release (or anything else I might be interested in), I read the whole post. The blog is probably the best place to ann...
by W. H. Heydt
Tue Jan 21, 2020 9:11 pm
Forum: Beginners
Topic: Any way to speed up the system clock/timer?
Replies: 7
Views: 409

Re: Any way to speed up the system clock/timer?

I am not asking how to overclock. Is it possible to speed up the system clock so apps running in Raspbian think time passes faster than it really does? Specifically I'm trying to speed up a countdown on a website in Chromium. Latest Buster on a Pi 3. If the countdown timer is on the web site, it is...
by W. H. Heydt
Tue Jan 21, 2020 9:08 pm
Forum: Beginners
Topic: Make pwr & act LED visible externally
Replies: 5
Views: 368

Re: Make pwr & act LED visible externally

crispn wrote:
Tue Jan 21, 2020 8:05 pm
I have a Pi4 inside a repurposed Tivo case.
You cite the cause of your own problem. The official cases for Pis allow you to see those LEDs from outside the case.
by W. H. Heydt
Tue Jan 21, 2020 4:32 pm
Forum: Beginners
Topic: Can I access SSH on a new Pi 4B with no monitor?
Replies: 3
Views: 191

Re: Can I access SSH on a new Pi 4B with no monitor?

Wow, (looks to see if you are in the room here...), thanks for the instant reply. I had not read that, mea culpa, sorry,. i will take the SD card out and modify it, this will be very helpful in my particular set up, many thanks. What a wonderful little device, i can see me buying a third one soon.....
by W. H. Heydt
Tue Jan 21, 2020 4:24 pm
Forum: Gaming
Topic: How do I create game for the Raspberry Pi?
Replies: 28
Views: 749

Re: How do I create game for the Raspberry Pi?

Vintage Gaming wrote:
Tue Jan 21, 2020 4:21 pm
I’m wanting the game to run as soon as the pi turns on. How would I do that?
Crontab, @reboot. If it needs the GUI up before it can run, it would go in autostart.
by W. H. Heydt
Tue Jan 21, 2020 2:56 pm
Forum: General discussion
Topic: experience with a power bank that works as UPS for RPi4 ??
Replies: 7
Views: 408

Re: experience with a power bank that works as UPS for RPi4 ??

Commercial UPSes use sealed lead acid batteries. This is probably because they are--relatively--cheap. Powerbanks use Lithium batteries which have a much better density but are more expensive. Powerbanks are also kept as small as possible, so there is less room for circuits to maintain output when s...
by W. H. Heydt
Tue Jan 21, 2020 4:05 am
Forum: General discussion
Topic: Root User
Replies: 1
Views: 139

Re: Root User

There is a root user on every *nix system. In the general case, if you find yourself needing root privileges to do routine work, something is set up wrong. Doing ordinary stuff as root is dangerous, as the system lacks any number of protections from inadvertently doing something seriously wrong. Wit...
by W. H. Heydt
Tue Jan 21, 2020 4:00 am
Forum: Off topic discussion
Topic: PCB Engineering - Legal side questions
Replies: 7
Views: 458

Re: PCB Engineering - Legal side questions

@W. H. Heydt, Can't speak to the EU or UK, but under current law in the US, copyright by an individual is lifetime + 70 years. For a copyright held by a corporation, it's 95 years. Yes. Which is why I said "The terms of which last forever, at least as far as anyone alive today is concerned." The wh...
by W. H. Heydt
Mon Jan 20, 2020 11:50 pm
Forum: General discussion
Topic: Extra four second delay on Pi4 boot compared to Pi2/Pi3
Replies: 4
Views: 781

Re: Extra four second delay on Pi4 boot compared to Pi2/Pi3

It probably has to do with the VC6 checking the external (to the SoC) EEPROM and starting the boot loader there. Or it could be the difference between the VC4 boot ROM and the VC6 boot ROM, but I'd bet on the former.
by W. H. Heydt
Mon Jan 20, 2020 11:47 pm
Forum: General discussion
Topic: Design Ideas
Replies: 11
Views: 420

Re: Design Ideas

PeterO, You didn't read enough of the wikipedia page .... That is true. Joe, operator of the "best Bar in Twenty-Seven Million Miles, Minimum!", upon whose tablecloths the engineers do much of their brainstorming. Is that it? I have seen engineers discussing and solving problems over beers from Lon...
by W. H. Heydt
Mon Jan 20, 2020 11:43 pm
Forum: Off topic discussion
Topic: PCB Engineering - Legal side questions
Replies: 7
Views: 458

Re: PCB Engineering - Legal side questions

If the schematic or PCB design was published with the product, as they often were in the old days of radios, tvs, test gear and the like, then that is all subject to copyright law. The terms of which last forever, at least as far as anyone alive today is concerned. Can't speak to the EU or UK, but ...
by W. H. Heydt
Mon Jan 20, 2020 9:26 pm
Forum: General discussion
Topic: Design Ideas
Replies: 11
Views: 420

Re: Design Ideas

Nah, just start hacking code. Actually in our small company we often find ourselves discussing designs over lunch and/or beer. Sometimes even organized meetings. We will scrawl diagrams on anything from white boards to napkins. When we are done discussing a picture of the scrawl is taken, that gets...
by W. H. Heydt
Sun Jan 19, 2020 5:46 pm
Forum: Troubleshooting
Topic: phpMyAdmin
Replies: 7
Views: 175

Re: phpMyAdmin

Usually when referencing the system you are on, the IP address would be 127.0.0.1.
by W. H. Heydt
Sun Jan 19, 2020 4:38 pm
Forum: General discussion
Topic: OS selection pre-boot on Pi 4?
Replies: 6
Views: 266

Re: OS selection pre-boot on Pi 4?

bomblord wrote:
Sun Jan 19, 2020 4:23 pm
B.Goode wrote:
Sun Jan 19, 2020 4:20 pm
Check out the abilities of PINN. The developer/maintainer regularly contributes to these forums.

https://www.raspberrypi.org/forums/view ... 3&t=142574
Wow I thought PINN was just an installer didn't realize it also acted as a boot selector.
NOOBS does as well.
by W. H. Heydt
Sun Jan 19, 2020 2:56 am
Forum: Beginners
Topic: Remove the wireless card
Replies: 10
Views: 404

Re: Remove the wireless card

The way to get a Pi without wireless is to buy a Pi2B. If thinking in terms of the Pi4B, the best option would be the P2Bv1.2. A desire for a Pi4-class board without WiFi or BT would argue for a P2Bv1.3 which would be a Pi4B without the wireless circuitry. (I would buy a bunch of them--probably a 2G...
by W. H. Heydt
Sun Jan 19, 2020 1:36 am
Forum: General discussion
Topic: Future of raspberry pi - software related
Replies: 328
Views: 13541

Re: Future of raspberry pi - software related

I'm sure with some work a more modern desktop UI could be slimmed down to be usable on an 800x480 screen with a mouse. You mean like the RPF 7" touchscreen? (I have 3 in use--one of those 24x7, the other two intermittently.) The problem is desktop UIs aren't great on touchscreens at the best of tim...
by W. H. Heydt
Sat Jan 18, 2020 11:30 pm
Forum: General discussion
Topic: How to work around power limitations of the USB ports on the Pi4?
Replies: 9
Views: 485

Re: How to work around power limitations of the USB ports on the Pi4?

Another alternative would be to swap the HDD for an SSD, carefully picking one with low power specs.
by W. H. Heydt
Sat Jan 18, 2020 11:29 pm
Forum: General discussion
Topic: Controlling USB Power with Time
Replies: 1
Views: 85

Re: Controlling USB Power with Time

There have been quite a number of people wanting to do things like that. You will have to have *something* that remains on to wake up the Pi, probably a microcontroller. Also be aware that it take time for a Pi to boot.
by W. H. Heydt
Fri Jan 17, 2020 4:26 pm
Forum: General discussion
Topic: Future of raspberry pi - software related
Replies: 328
Views: 13541

Re: Future of raspberry pi - software related

Just been joking: regarding the worldwide success of Raspberry Pi, we will soon be needing an integrated virus scanner by default! That is the consecration of real success. :lol: :lol: :lol: Yes.... Witness today's (17 Jan 2020) blog post. If there is money to be made on counterfeit *cases*, the ma...
by W. H. Heydt
Fri Jan 17, 2020 2:47 pm
Forum: General discussion
Topic: Do HDMI displays need power?
Replies: 6
Views: 324

Re: Do HDMI displays need power?

So im currently looking for a small display like a 4" for my pi 3, is the HDMI enough to power the screen? or does it need an additional cable for that? Its going to be in a separate space than the pi so id like something that would work from a single cable, is there such thing? It depends on what ...
by W. H. Heydt
Thu Jan 16, 2020 7:41 pm
Forum: General discussion
Topic: Future of raspberry pi - software related
Replies: 328
Views: 13541

Re: Future of raspberry pi - software related

But how many have more than one Pi? I'm not even sure how many I have, but it probably more than twenty. Also, there are the big corporations that use tens of thousands of Pi. Same here. I've probably got more than 10 Pi2Bv1.1 alone, and similar numbers of Model B Pis. Only 4 Pi4Bs...so far, but th...
by W. H. Heydt
Thu Jan 16, 2020 4:17 pm
Forum: Beginners
Topic: Why does shutdown dialog take so long to load?
Replies: 12
Views: 1143

Re: Why does shutdown dialog take so long to load?

Exactly which type of Sandisk (IIRC there's an early P4 thread where it was noted that one "high-performance" Sandisk type actually worked slower in a P4 than its (one model type) lower "brother". A3 vs. A2 or something like that) Trev. A2 (slower) vs. A1 (faster). A2 requires specific--proprietary...
by W. H. Heydt
Thu Jan 16, 2020 5:39 am
Forum: Off topic discussion
Topic: For those wanting a portable Pi...
Replies: 4
Views: 508

Re: For those wanting a portable Pi...

So far as I can tell, it's a screen, a keyboard, a touchpad and a battery. The weight is probably in the battery and making the shell reasonably robust. I believe the intent is to have a way to turn a smart phone into a sort of laptop, since modern smart phone SoCs are pretty powerful, but the scree...
by W. H. Heydt
Thu Jan 16, 2020 3:27 am
Forum: Off topic discussion
Topic: For those wanting a portable Pi...
Replies: 4
Views: 508

For those wanting a portable Pi...

https://www.theregister.co.uk/2020/01/1 ... _2_review/

Apparently (if I'm reading it right) the intended use of the Nexdock 2 is to be used with a smart phone, but the reviewer started out with a Pi4B.

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