Go to advanced search

by W. H. Heydt
Fri Dec 15, 2017 1:15 am
Forum: General discussion
Topic: Monitor power saving
Replies: 2
Views: 95

Re: Monitor power saving

Depends on what you mean by "monitor". One can control the backlight of an RPF 7" touchscreen with a fairly simple command that can be run as a cron job. That's what I do with my "alarm clock" Pi. I don't turn the backlight off altogehter, just dim it to 22 (of 255) at night and bring it back to 250...
by W. H. Heydt
Thu Dec 14, 2017 7:05 pm
Forum: Official Foundation Display
Topic: Why wont hdmi work
Replies: 2
Views: 141

Re: Why wont hdmi work

When the RPF DSI touch screen is connected and powered up, the VC4 disables HDMI (unless you use the exceedingly experimental fkms or kms drivers). It's one or the other with standard firmware driving the display. Or one can simply not provide power to the touchscreen and the Pi will happily use a ...
by W. H. Heydt
Tue Dec 12, 2017 9:28 pm
Forum: Beginners
Topic: adaptor for older monitor
Replies: 8
Views: 204

Re: adaptor for older monitor

You need an HDMI to VGA converter. It's takes active elements to convert the difital HDMI signals into the analog VGA signals. The best converters have their own power connection. If you hunt around, it may be cheaper to find a monitor with DVI or HDMI inpput than to get a decent HDMI to VGA convert...
by W. H. Heydt
Tue Dec 12, 2017 8:56 pm
Forum: General discussion
Topic: Raspberry Pi3B desktop systems
Replies: 11
Views: 484

Re: Raspberry Pi3B desktop systems

Okay...this is going to get a bit complicated... Unless otherwise noted, everything is running Raspbian Stretch. I have a Pi3B being a "desktop" machine for my 9-year-old grandson. It uses a 16GB SD card, a Logitech K-120 keyboard, and a Logitech Marbleman trackball. For a monitor it has a 19" 1280x...
by W. H. Heydt
Tue Dec 12, 2017 3:50 pm
Forum: Beginners
Topic: Physical placement for a Raspberry Pi
Replies: 5
Views: 269

Re: Physical placement for a Raspberry Pi

Anti-static materials work because they are electrical conductors. You do NOT want that material in contact with a circuit board that is powered on. Acrylic, on the other hand, is an electrical insulator, so being in contact with a circuit board is just fine. Thank you. I was wondering if any diele...
by W. H. Heydt
Mon Dec 11, 2017 10:34 pm
Forum: General discussion
Topic: Need help in Rochester NY!
Replies: 5
Views: 213

Re: Need help in Rochester NY!

Most Pis are ordered on line. If you look here https://www.raspberrypi.org/products/#buy-now-modal you can check to see what resellers you're willing to work with.
by W. H. Heydt
Mon Dec 11, 2017 5:40 pm
Forum: General discussion
Topic: use pi zero w in commercial production
Replies: 38
Views: 4483

Re: use pi zero w in commercial production

That is clearly an option, although i suspect any price hike would need to cover canabalising Pi3 sales. I would think it more likely to canabalize A+ sales than Pi3B sales. But then, should the Pi3A manage to hit the market, that might well canabalize Pi0/Pi0W sales. The people who deal with all t...
by W. H. Heydt
Mon Dec 11, 2017 4:40 pm
Forum: General discussion
Topic: Help! - I need to launch LXTerminal at startup on the desktop.
Replies: 3
Views: 148

Re: Help! - I need to launch LXTerminal at startup on the desktop.

If you want the command line interface (CLI) at startup, you could set the Pi to not bring up the GUI desktop at all. If you never need the GUI desktop, you could use Rapbian Lite.
by W. H. Heydt
Mon Dec 11, 2017 3:27 pm
Forum: General discussion
Topic: Still only one rpi zero per purchase?
Replies: 29
Views: 1004

Re: Still only one rpi zero per purchase?

One day - we may be able to buy class/coding club sets but its not looking very likely Being looked in to - "not likely" is not the correct state of play. As are other ways of making the Zero more generally available - but at a higher cost. Nothing to announce yet. I would suggest that the optimal ...
by W. H. Heydt
Mon Dec 11, 2017 1:41 am
Forum: General discussion
Topic: max operating temperature
Replies: 3
Views: 191

Re: max operating temperature

A Pi will operate a lot better than I will in a 45C environment.
by W. H. Heydt
Sun Dec 10, 2017 4:38 pm
Forum: General discussion
Topic: Plug & Play On/Off Switch?
Replies: 12
Views: 476

Re: Plug & Play On/Off Switch?

Or, of course, there is my solution. Just leave the Pi running all the time. I realize the problem here is that too many people can't think beyond MS Windows or MacOS. Both companies have gone to great lengths to disguise how computers actually work in order to make them accessible to as many peopl...
by W. H. Heydt
Sun Dec 10, 2017 4:05 am
Forum: General discussion
Topic: PI Power Supply
Replies: 2
Views: 180

Re: PI Power Supply

What model of Pi are you using? How much current will the 5V output provide? If what's available meets or exceeds what is needed, then it should work. If not...not.
by W. H. Heydt
Sun Dec 10, 2017 12:51 am
Forum: Beginners
Topic: 5V/2.4A question.
Replies: 7
Views: 239

Re: 5V/2.4A question.

When I first started using a PiDrive with a Pi3B, I was using a 2A PSU and it ran fine.
by W. H. Heydt
Sun Dec 10, 2017 12:49 am
Forum: Beginners
Topic: Sequential file nameing
Replies: 3
Views: 129

Re: Sequential file nameing

You could use a time stamp as part of the file name. If your need for sequential naming isn't exact (you can, after all, get a list of file back in creation order easily enough), you could use the PID as part of the file name. Another approach would be to create a database with a automatic sequence ...
by W. H. Heydt
Sun Dec 10, 2017 12:42 am
Forum: General discussion
Topic: Help me, so many questions!
Replies: 8
Views: 426

Re: Help me, so many questions!

Opening Inkscape on my Windows machine only takes 100Mb. The Gimp only 43Mb. The 1Gb of the Pi should be quite enough for that. I have yet to try it. I've run Gimp on a Pi3B. I didn't check how much memory it used, nor do I don anything very complex with it, but it runs okay for me. I'm sure a grap...
by W. H. Heydt
Sun Dec 10, 2017 12:39 am
Forum: General discussion
Topic: screen rotation on pi3
Replies: 2
Views: 127

Re: screen rotation on pi3

Welcome to the forums. Apparently I am dumbest person to ever own one of these! Given some of the questions that crop up, I seriously doubt your claim. I have tried entering the following to no avail " sado nano /boot/config.txt lcd_rotate=2 cntrl x y enter I then x out and reboot Fisst, let's cover...
by W. H. Heydt
Sat Dec 09, 2017 6:39 am
Forum: General discussion
Topic: Plug & Play On/Off Switch?
Replies: 12
Views: 476

Re: Plug & Play On/Off Switch?

From Adafruit: https://www.adafruit.com/product/1620 Won't that just kill the power? It won't shut the Pi down correctly. Yes, that's what that does--with, as specified, no soldering involved. A full (power off) shutdown is a two stage operation. 1. Shut down the software. 2. Remove the power. The ...
by W. H. Heydt
Sat Dec 09, 2017 5:42 am
Forum: Beginners
Topic: Permanent powered on?
Replies: 6
Views: 298

Re: Permanent powered on?

My Pis get rebooted more because I do software updates than they do for any other reason.
by W. H. Heydt
Fri Dec 08, 2017 7:48 pm
Forum: General discussion
Topic: Help me, so many questions!
Replies: 8
Views: 426

Re: Help me, so many questions!

No, you're not going to be running Illustrator or Photoshop on a Pi, no matter what OS you run. So far as I know, gimp does in Linux (and can be installed under Raspbian) what Photoshop does in Windows. No idea what the Linux equivalent of Illustrator is, though gimp might cover that as well. In any...
by W. H. Heydt
Fri Dec 08, 2017 7:44 pm
Forum: General discussion
Topic: Should I move to Ubuntu
Replies: 10
Views: 444

Re: Should I move to Ubuntu

Frankly, what's the problem? Downloading and creating a new SD only takes a few minutes. And that only has to be done every year or two when a new major release occurs. Actually it does not "have" to be done as it's quite possible to upgrade to a new release on a running machine. Which has always w...
by W. H. Heydt
Fri Dec 08, 2017 6:33 am
Forum: Beginners
Topic: Safety Instructions
Replies: 18
Views: 632

Re: Safety Instructions

asandford wrote:
Fri Dec 08, 2017 12:30 am
If you have to ask, don't do it (@the OP)
That's a good summary.
by W. H. Heydt
Fri Dec 08, 2017 5:32 am
Forum: General discussion
Topic: Trigger RPi Build From macOS Xcode
Replies: 2
Views: 143

Re: Trigger RPi Build From macOS Xcode

Only if xcode will cross-compile for ARM processors. Really...it should be trivial to copy your source code to the Pi and have a makefile ready to go to build your object code.
by W. H. Heydt
Thu Dec 07, 2017 6:09 pm
Forum: Beginners
Topic: Safety Instructions
Replies: 18
Views: 632

Re: Safety Instructions

DougieLawson wrote:
Thu Dec 07, 2017 10:01 am
Only thing I've terminated without prejudice recently was a HD44780 LCD because I got power and GND swapped.
That's sounds a lot more like termination WITH prejudice. Perhaps Liz will weigh in with a trained opinion.
by W. H. Heydt
Thu Dec 07, 2017 6:05 pm
Forum: General discussion
Topic: Improving Bluetooth Scan Radius
Replies: 2
Views: 129

Re: Improving Bluetooth Scan Radius

Range is going to depend primarily on the power of the transmitter and secondarily on the sensitivity of the receiver. If the transmitter is a Class 2 device, the expected range is 10m. It's with a Class 1 device that you get a 100m range. Using a dongle with--probably--a larger and--therefore--more...

Go to advanced search