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by hippy
Tue Jan 14, 2020 10:04 pm
Forum: Advanced users
Topic: Raspberry pi to Arduino pro mini using FTDI cable
Replies: 13
Views: 328

Re: Raspberry pi to Arduino pro mini using FTDI cable

Thanks for the loopback code, I tried it and it looks like my cable is working fine, I watched A,B,C... scroll down the screen without an issue, not really sure what to try now, I believe I have fixed my arduino IDE software, I know my cable is working but the arduinos still won't talk to me :( :( ...
by hippy
Tue Jan 14, 2020 9:14 pm
Forum: Beginners
Topic: RPi not visible in Windows network WORKGROUP
Replies: 36
Views: 672

Re: RPi not visible in Windows network WORKGROUP

Took me months to figure out why a known working Samba configuration for my Pi would no longer work and how to resolve that when Samba decided to change its defaults. It's not always as easy as it's meant to be.
by hippy
Tue Jan 14, 2020 9:05 pm
Forum: General discussion
Topic: Battery holders
Replies: 8
Views: 283

Re: Battery holders

Even Duracell AA batteries can deliver a lot of current, produce a lot of heat in wiring, when shorted. I would suspect a short on the Pi-side rather than a battery or battery holder problem.
by hippy
Tue Jan 14, 2020 8:56 pm
Forum: Beginners
Topic: How to run .exe files on raspbian
Replies: 82
Views: 66424

Re: How to run .exe files on raspbian

Eltech's ExaGear apparently used to run Roblox on a Pi, but since that's gone AWOL, it would seem one would have to use some other means of emulation.
by hippy
Tue Jan 14, 2020 8:41 pm
Forum: Other projects
Topic: Photo Booth Help
Replies: 136
Views: 14725

Re: Photo Booth Help

pygame 1.9.4.post1 Hello from the pygame community. https://www.pygame.org/contribute.html mmal: mmal_vc_port_enable: failed to enable port vc.ril.image_encode:out:0(JPEG): ENOMEM mmal: mmal_port_enable: failed to enable port vc.ril.image_encode:out:0(JPEG)(0x2925110) (ENOMEM) Backend terminated or...
by hippy
Tue Jan 14, 2020 8:20 pm
Forum: Beginners
Topic: Running fan on 3.3 volts instead of the nominal 5 V
Replies: 20
Views: 448

Re: Running fan on 3.3 volts instead of the nominal 5 V

I don't think any "hardware Guru will confirm under-volting is an approved mode of running small DC CPU fans". I expect most would only go as far as "might work", "often does". It's hard to say what current is being drawn, what effect that may have on other things connected to the 3V3, or the regula...
by hippy
Tue Jan 14, 2020 8:12 pm
Forum: Beginners
Topic: Building a small Raspberry Pi phone
Replies: 6
Views: 173

Re: Building a small Raspberry Pi phone

I am not sure there will be any tutorials to follow but Google turns up a number of links for a few people who have built their own Pi-based phones which may offer some help or guidance, though it looks like many of those may be somewhat out of date. With the Pi not being very well suited to being a...
by hippy
Tue Jan 14, 2020 3:38 pm
Forum: General discussion
Topic: Yoshimi on the Raspberry Pi
Replies: 3
Views: 175

Re: Yoshimi on the Raspberry Pi

Given the mention of SynthFest I would guess Yoshimi is this digital synthesiser software -

http://yoshimi.sourceforge.net

But, yes, it does help when a poster tells us exactly what something is or provides a link.

As to Apkafe ... Covfefe Mk II ?
by hippy
Tue Jan 14, 2020 3:27 pm
Forum: General discussion
Topic: PCIe over cable standard. I didn't know that was a thing.
Replies: 22
Views: 789

Re: PCIe over cable standard. I didn't know that was a thing.

I'm not entirely sure why you would want to try stuffing PCIe down a cable. That mostly comes down to "necessity being the mother of invention". The OP was pointing out that, if user accessible PCIe were ever able to be added to a Pi in future, and there was no room for a full-size PCIe socket, via...
by hippy
Tue Jan 14, 2020 1:39 pm
Forum: Windows 10 for IoT
Topic: How to Install Microsoft windows 10 IOT on Raspberry PI 4 ?
Replies: 24
Views: 2271

Re: How to Install Microsoft windows 10 IOT on Raspberry PI 4 ?

Manufacturers like NXP are for profit corporations whose mission is to maximize profit. As such we can imagine why they might do such a thing. The Raspberry Pi Foundation is a a charitable organization with an educational mission. As such I would be disgusted to find they use any of their resources...
by hippy
Tue Jan 14, 2020 1:21 pm
Forum: Troubleshooting
Topic: [Solved] Broken packages
Replies: 14
Views: 537

Re: [Solved] Broken packages

ShiftPlusOne wrote:
Tue Jan 14, 2020 1:08 pm
dist-upgrade isn't a documented feature of apt. I believe it just runs full-upgrade. No need to do both.
I haven't yet got out of the habit of using 'apt-get', having had 'apt-get update && apt-get upgrade' drummed into me and using that for 8 years. 'full-upgrade' appears to work with 'apt-get'.
by hippy
Tue Jan 14, 2020 1:05 pm
Forum: Troubleshooting
Topic: [Solved] Broken packages
Replies: 14
Views: 537

Re: [Solved] Broken packages

pcmanbob wrote:
Tue Jan 14, 2020 12:45 pm
in the past I used use dist-upgrade as I always have on my Linux X86 PC's
I tend to use "upgrade" so I get to see what's "held back" so I'm aware of more major changes, then "dist-upgrade" when anything has been. "full-upgrade" now appended to that sequence.
by hippy
Tue Jan 14, 2020 12:55 pm
Forum: Advanced users
Topic: Missing labels on the schematics 4b
Replies: 14
Views: 1359

Re: Missing labels on the schematics 4b

R13: 5V bleeder to pull 5V down in sensible time when unplugged. WB_VBAT: WiFi/BT supply, needs to be >3.6V for RF PA LDO to be in regulation. Thanks for the clarifications, particularly as to what WB_VBAT is - With the datasheet seeming to indicate it was optimally functional between 3.2V and 4.8V...
by hippy
Tue Jan 14, 2020 11:45 am
Forum: Advanced users
Topic: How to Differentiate RPI4 - 1 vs. 2 vs. 4 GB ?
Replies: 49
Views: 1721

Re: How to Differentiate RPI4 - 1 vs. 2 vs. 4 GB ?

Or a 1.1, or a 1.3, or a 1.4..... Can't we have a sticker for that, too? (Puts on Tinfoil hat and runs) :lol: No that would cost a few cents per sale and would complicate the production process. Buy your own sticker. If they are planning a means to identify RAM size it would seem little extra cost ...
by hippy
Mon Jan 13, 2020 6:25 pm
Forum: General discussion
Topic: Setup local repository.
Replies: 3
Views: 168

Re: Setup local repository.

Package: apt-cacher-ng Thanks for that. Seems to have worked a treat. On my Pi 3B main Pi, this was all I needed, no reboot or anything else ... sudo apt-get install apt-cacher-ng On my Pi Zero W, all I needed to was to edit two files to add my Pi 3B IP address sudo nano /etc/apt/sources.list # deb...
by hippy
Mon Jan 13, 2020 4:57 pm
Forum: Troubleshooting
Topic: [Solved] Broken packages
Replies: 14
Views: 537

Re: Broken packages

As I said in the anther thread I wonder if its because people are not always using full-upgrade which is now the recommended command I wasn't even aware that "full-upgrade" was the recommended command. It might say that in some documentation somewhere but I don't recall any announcement to that eff...
by hippy
Mon Jan 13, 2020 4:38 pm
Forum: Advanced users
Topic: How to Differentiate RPI4 - 1 vs. 2 vs. 4 GB ?
Replies: 49
Views: 1721

Re: How to Differentiate RPI4 - 1 vs. 2 vs. 4 GB ?

We already have a plan for identifying the memory model. :( Bang goes the opportunity to buy a second-hand 4GB for the price of 1GB because the seller doesn't know what size memory it has. Still, plenty out there without stickers which in due course will hopefully find their way to the second-hand ...
by hippy
Mon Jan 13, 2020 1:57 pm
Forum: Bare metal, Assembly language
Topic: custom recovery.bin files
Replies: 18
Views: 872

Re: custom recovery.bin files

My hunch on 16KB+4KB might be promising. Differences between each file and another file seems always roughly 16KB. But it might be 2KB+2KB rather than 4KB. The first 2KB is roughly the same in all, and the first long in the image is 0x0000902 which is about 2K. That seems to be a bit-pattern array w...
by hippy
Mon Jan 13, 2020 11:49 am
Forum: Troubleshooting
Topic: [Solved] Broken packages
Replies: 14
Views: 537

Re: Broken packages

LTolledo wrote:
Mon Jan 13, 2020 3:42 am
When I updated and upgraded yesterday (01/12/2020) did not encounter this problem....
It does seem somewhat random as to whether one is affected or not, both this time and last year, and seems to be the same for others.
by hippy
Mon Jan 13, 2020 3:17 am
Forum: Troubleshooting
Topic: [Solved] Broken packages
Replies: 14
Views: 537

Re: Broken packages

Never realised quite how fast this forum moves; those reports from the past few days are all way down on page 13+ of my unread posts view.

And a bit embarrassing - I seem to have had the exact same problem almost a year ago ...

https://www.raspberrypi.org/forums/view ... p?t=234274
by hippy
Mon Jan 13, 2020 2:48 am
Forum: Bare metal, Assembly language
Topic: custom recovery.bin files
Replies: 18
Views: 872

Re: custom recovery.bin files

i believe these files are firmware for the ddr4 controller why do 8 exist? I haven't really looked at them other than to reverse byte order and look at the strings. My hunch from that, looking at how the strings differ, is that each sets up a different characteristic of the memory so they likely al...
by hippy
Mon Jan 13, 2020 1:22 am
Forum: Troubleshooting
Topic: [Solved] Broken packages
Replies: 14
Views: 537

[Solved] Broken packages

Pi 3B (non-plus), Buster, doing my regular update ... pi@Pi3B:~ $ uname -a Linux Pi3B 4.19.75-v7+ #1270 SMP Tue Sep 24 18:45:11 BST 2019 armv7l GNU/Linux pi@Pi3B:~ $ sudo apt-get update Hit:1 http://raspbian.raspberrypi.org/raspbian buster InRelease Hit:2 http://archive.raspberrypi.org/debian buster...
by hippy
Sat Jan 11, 2020 4:52 pm
Forum: Bare metal, Assembly language
Topic: custom recovery.bin files
Replies: 18
Views: 872

Re: custom recovery.bin files

Many thanks for the details. That moved my work on and I can now dump and build my own Boot Eeprom Image files. It's pretty clear why RPT are looking to reduce the physical Eeprom size to save BOM costs. The last 256KB is completely unprogrammed so the Eeprom could easily be halved in size to 256KB....
by hippy
Sat Jan 11, 2020 3:18 pm
Forum: General discussion
Topic: How many cores in a Pi 4??
Replies: 14
Views: 676

Re: How many cores in a Pi 4??

Are you prepared to pay 4 or more times the price for such a thing? That would be 280 Euro. I am sure people would have said much the same if someone were asking for a Pi 4B when the first Pi arrived. It might cost that now, but it would be unwise to say that's what it will cost whenever such a bea...
by hippy
Fri Jan 10, 2020 3:12 pm
Forum: General discussion
Topic: RTC Timekeeping Registers
Replies: 7
Views: 301

Re: RTC Timekeeping Registers

For the year 2020 You would write 0x20 to register 0x06, and I believe the month should be stored as 0x81 in register 0x05 to show that it is 20xx, not 19xx (add 0x80 to the month number to set the "Century" flag). The datasheet says "The century bit (bit 7 of the month register) is toggled when th...

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