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by W. H. Heydt
Tue Jun 02, 2020 5:26 am
Forum: Troubleshooting
Topic: can't download files
Replies: 4
Views: 81

Re: can't download files

In addition to the issues mentioned about, you have an attempt to ssh into the system you are already ssh'd into. Not sure what you think that would accomplish....
by W. H. Heydt
Tue Jun 02, 2020 5:22 am
Forum: General discussion
Topic: FLOATING POINT
Replies: 22
Views: 483

Re: FLOATING POINT

Heater wrote:
Tue Jun 02, 2020 5:05 am
I'm curious looking forward to getting to the bottom of this.
I get the distinct impression of a student who is in over his depth. I can think of several ways he could have gotten there...
by W. H. Heydt
Tue Jun 02, 2020 5:20 am
Forum: General discussion
Topic: FLOATING POINT
Replies: 22
Views: 483

Re: FLOATING POINT

rpdom wrote:
Tue Jun 02, 2020 5:02 am
Is there even a Raspberry Pi or Raspberry Pi OS involved here?
No indication one way or the other. So, yes, point. This may be so off topic it doesn't belong on the Forums at all.
by W. H. Heydt
Tue Jun 02, 2020 4:48 am
Forum: General discussion
Topic: Raspberry Pi HQ Camera Comparison
Replies: 3
Views: 89

Re: Raspberry Pi HQ Camera Comparison

What you want to know is the angular field of view. That depends on both the focal length and sensor (image) size. The other thing you are looking for is the focus range. Note also that the depth of field, that is the range over which the image is in acceptable focus, depends on both focal length a...
by W. H. Heydt
Tue Jun 02, 2020 4:41 am
Forum: General discussion
Topic: FLOATING POINT
Replies: 22
Views: 483

Re: FLOATING POINT

Heater, yes, i am doing a calculator executing it in a Qemu emulation, and yes with Assembly language, however I was asking how to use instructions using the printf and scanf function, I already solved it but my question at the beginning was not written correctly. Printf and scanf are C functions. ...
by W. H. Heydt
Tue Jun 02, 2020 3:04 am
Forum: General discussion
Topic: FLOATING POINT
Replies: 22
Views: 483

Re: FLOATING POINT

jemv7181 wrote:
Tue Jun 02, 2020 2:51 am
Thanks for answering, I already knew how to do them, and they are instruction VFP, VCVT, VMOV, ETC :D
That isn't C. Those are assembly language mnemonics.

Your project is just crying out to be done in SNOBOL.
by W. H. Heydt
Tue Jun 02, 2020 3:02 am
Forum: General discussion
Topic: Raspberry Pi HQ Camera Comparison
Replies: 3
Views: 89

Re: Raspberry Pi HQ Camera Comparison

What you want to know is the angular field of view. That depends on both the focal length and sensor (image) size. The other thing you are looking for is the focus range. Note also that the depth of field, that is the range over which the image is in acceptable focus, depends on both focal length an...
by W. H. Heydt
Tue Jun 02, 2020 2:25 am
Forum: General discussion
Topic: 2M RPF Pi4 HDMI cable
Replies: 2
Views: 94

2M RPF Pi4 HDMI cable

I don't know if this came out a while ago, but it's the first time I've noticed it... There is an official RPF 2M micro-HDMI to HDMI cable. Chicago Electronics lists them for $7.50 in white or black. The black is out of stock.
by W. H. Heydt
Mon Jun 01, 2020 10:56 pm
Forum: General discussion
Topic: off the grid, internet options
Replies: 15
Views: 317

Re: off the grid, internet options

One more option: If the weather station is outside your WiFi range but within 100m (and you own the land/have the necessary permissions) you could go with ethernet. If you add PoE that's the power sorted too. Not if you live in Australia. The law here states it is illegal to run Ethernet cables out...
by W. H. Heydt
Mon Jun 01, 2020 10:40 pm
Forum: General discussion
Topic: USB-MSD boot EEPROM update - 2020-05-28
Replies: 141
Views: 8743

Re: USB-MSD boot EEPROM update - 2020-05-28

Last week I reported the problem where logging in with an ID other than 'pi', the top bar flashed on and off a few times and then disappeared, leaving the only recovery path of starting an ssh session from another system to reboot the errant one. Today, I ran an update/upgrade cycle (still no 2020-0...
by W. H. Heydt
Mon Jun 01, 2020 10:37 pm
Forum: General discussion
Topic: USB-MSD boot EEPROM update - 2020-05-28
Replies: 141
Views: 8743

Re: USB-MSD boot EEPROM update - 2020-05-28

dickon wrote:
Mon Jun 01, 2020 10:34 pm
W. H. Heydt wrote:
Mon Jun 01, 2020 10:25 pm
Correct. My TARDIS is in the shop.
Where and when? :-)
What do we want?
A time machine.
When do we want it?
Doesn't matter.
by W. H. Heydt
Mon Jun 01, 2020 10:25 pm
Forum: General discussion
Topic: USB-MSD boot EEPROM update - 2020-05-28
Replies: 141
Views: 8743

Re: USB-MSD boot EEPROM update - 2020-05-28

dickon wrote:
Mon Jun 01, 2020 10:05 pm
drgeoff wrote:
Mon Jun 01, 2020 9:52 pm
What's up with you today? Your calendar has wrong awry and you've written that you used a 512 Gbyte boot partition.
If you've got it, flaunt it... :-)

I'd noticed the calendar thing. I assume 'May' was meant.
Correct. My TARDIS is in the shop.
by W. H. Heydt
Mon Jun 01, 2020 10:24 pm
Forum: General discussion
Topic: USB-MSD boot EEPROM update - 2020-05-28
Replies: 141
Views: 8743

Re: USB-MSD boot EEPROM update - 2020-05-28

I was under the impression that new versions of the beta EEPROM data were supposed to be released through the apt process. The last version obtainable that way (using the "beta" setting) is 27 June. Are the 28 June (or later) versions going to be released that way as part of the beta test? @W. H. H...
by W. H. Heydt
Mon Jun 01, 2020 9:11 pm
Forum: General discussion
Topic: USB-MSD boot EEPROM update - 2020-05-28
Replies: 141
Views: 8743

Re: USB-MSD boot EEPROM update - 2020-05-28

I was under the impression that new versions of the beta EEPROM data were supposed to be released through the apt process. The last version obtainable that way (using the "beta" setting) is 27 June. Are the 28 June (or later) versions going to be released that way as part of the beta test?
by W. H. Heydt
Mon Jun 01, 2020 7:50 pm
Forum: General discussion
Topic: USB-MSD boot EEPROM update - 2020-05-28
Replies: 141
Views: 8743

Re: USB-MSD boot EEPROM update - 2020-05-28

And, frankly, you may as well make it 512M or 1G, just to give some extra headroom, for when the Pi 8 or 9 or whatnot is released and the default images require the additional space... I went for 512GB. It's not that some future board will require it, it's that some future release of RPiOS will nee...
by W. H. Heydt
Mon Jun 01, 2020 7:18 pm
Forum: General discussion
Topic: USB-MSD boot EEPROM update - 2020-05-28
Replies: 141
Views: 8743

Re: USB-MSD boot EEPROM update - 2020-05-28

Hi; hopefully my USB3 adaptor arrives today aside my fanshim. I want to try this out........ What should I format the USB3 SSD as? ntfs? ext4? fat32? What I'll be doing is... Downloading the latest Raspbian lite. rpi-update, making sure the bootloader is the same as the OP. I failed last time and w...
by W. H. Heydt
Mon Jun 01, 2020 4:42 pm
Forum: General discussion
Topic: More amperage on the new RPi4 8GB?
Replies: 8
Views: 489

Re: More amperage on the new RPi4 8GB?

Actually... I think the whole premise is wrong. If the reconfiguration of the power distribution is to provide more power for the larger RAM package, that would mean *less* power available to the USB ports.
by W. H. Heydt
Mon Jun 01, 2020 4:38 pm
Forum: General discussion
Topic: off the grid, internet options
Replies: 15
Views: 317

Re: off the grid, internet options

One more option: If the weather station is outside your WiFi range but within 100m (and you own the land/have the necessary permissions) you could go with ethernet. If you add PoE that's the power sorted too. Stick an Ethernet switch part way out there and it would be possible to go beyond 100 mete...
by W. H. Heydt
Mon Jun 01, 2020 5:24 am
Forum: Troubleshooting
Topic: Pi 4B+ stays powered, even after removing USB cable
Replies: 4
Views: 173

Re: Pi 4B+ stays powered, even after removing USB cable

Point of information... There is no such thing as a Pi4B+. There are 4 models of Pi4B (one of which is now bulk/commercial customers only).
by W. H. Heydt
Mon Jun 01, 2020 4:50 am
Forum: General discussion
Topic: Need emmc drive
Replies: 14
Views: 480

Re: Need emmc drive

The purpose of the SD card is to be a compact form of computer data storage. eMMC memory drives cannot be upgraded unless you solder the eMMC chip yourself. The eMMC chip is soldered to the board, I'm going to say you were actually referring to a M.2 connector or SATA connector. The M.2, and SATA c...
by W. H. Heydt
Mon Jun 01, 2020 12:35 am
Forum: General discussion
Topic: Install SlickEdit for RPI 4B
Replies: 6
Views: 186

Re: Install SlickEdit for RPI 4B

I do hope you realize that SlickEdit is a commercial product and that after a free trial period, you are going to have to pay for it. I also hope you downloaded the correct--Raspberry Pi--version, and know that it requires a Pi4B as a minimum system.
by W. H. Heydt
Sun May 31, 2020 11:54 pm
Forum: Beginners
Topic: RPI 4 8GB hardware version 1.4
Replies: 1
Views: 168

Re: RPI 4 8GB hardware version 1.4

Not all board revisions go into production. For instance, the original version of the Pi0 was v1.1. When the CSI connector was added, then new boards were v1.3. There never was a v1.2 in the wild.

I wouldn't set any great store by a missing revision number.
by W. H. Heydt
Sun May 31, 2020 11:29 pm
Forum: Off topic discussion
Topic: SpaceX Crew Dragon Launch using 3 Touchscreens
Replies: 6
Views: 391

Re: SpaceX Crew Dragon Launch using 3 Touchscreens

There does not seem to be much attention grabbed by this event. Kids don't seem to be as drawn to it as we were huddled around a 405 line black and white TV back in the Apollo days. Are they all engrossed in their computer games or social media? Did they realize humans are never getting off this pl...
by W. H. Heydt
Sun May 31, 2020 6:32 pm
Forum: General discussion
Topic: Could a 2.5A power bank power a pi4 + high quality camera module?
Replies: 6
Views: 199

Re: Could a 2.5A power bank power a pi4 + high quality camera module?

Frankly, for "mobile" (that is, battery powered) uses of Pis, I avoid the newer, more power hungry models and generally stick with older Pis, like the Pi2B, that don't require as much. I try to stick to using a zero. forgot to post this link earlier. It might help: https://www.raspberrypi.org/docum...
by W. H. Heydt
Sun May 31, 2020 5:15 pm
Forum: General discussion
Topic: Could a 2.5A power bank power a pi4 + high quality camera module?
Replies: 6
Views: 199

Re: Could a 2.5A power bank power a pi4 + high quality camera module?

HI I've been looking at solutions for portable power for a pi4 camera system but I cannot find any 3A power banks in my country and cannot order due to corona virus. What country are you in? (You can set your profile to display location with your posts...it helps immensely for people to suggest sou...

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