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by W. H. Heydt
Tue Aug 03, 2021 8:42 pm
Forum: Troubleshooting
Topic: All my pi's are redshirts
Replies: 11
Views: 202

Re: All my pi's are redshirts

I am dubious about a 4Ah powerbank being rated to deliver 2.1A. All the ones of that capacity I've used were rated for 1A output. Because no two sources will have the exact same voltage, putting two nominally identical source in parallel, unless expressly designed for that use case, will cause probl...
by W. H. Heydt
Tue Aug 03, 2021 4:45 pm
Forum: Off topic discussion
Topic: Wireless Key fob
Replies: 5
Views: 186

Re: Wireless Key fob

No. At least, not directly, you may be able to, if you have a receiver for those fobs wired into the power supply for the RPi4. That would be a bad way to do it. Suddenly dropping power on running system will--sooner or later--give you a corrupted file system. Better to attach the receiver to the P...
by W. H. Heydt
Tue Aug 03, 2021 4:42 pm
Forum: General discussion
Topic: Storage options for fastest possible data I/O
Replies: 2
Views: 93

Re: Storage options for fastest possible data I/O

Fastest I/O you're going to get on a Pi4B would be a USB 3 attached SATA III SSD.
by W. H. Heydt
Tue Aug 03, 2021 4:36 pm
Forum: General discussion
Topic: "Stable" Updates only....?
Replies: 12
Views: 207

Re: "Stable" Updates only....?

SCHOOLBOY ERROR ALERT. So this is a 2B. When created a Buster image I used the inbuilt SD Card Copier. This on my hard drive created both the boot and rootfs partitions. When I made fstab point at the hard drive for the rootfs [correct] I also pointed it at the boot partition [WRONG!] All the updat...
by W. H. Heydt
Tue Aug 03, 2021 5:27 am
Forum: Beginners
Topic: Weird power issues
Replies: 13
Views: 334

Re: Weird power issues

SSDs vary widely in how much power they require. At 8TB, I can well believe it requires a lot. Indeed, I'm not sure I've even heard of a SSD that large. Oh they exist. Up to 100TB if you have a spare $40,000 USD with 8TB being comparatively more affordable at around $3000 USD One is more than sligh...
by W. H. Heydt
Tue Aug 03, 2021 3:18 am
Forum: Beginners
Topic: Weird power issues
Replies: 13
Views: 334

Re: Weird power issues

I have never seen--or heard of--any message that one is "using the wrong power supply." What is the text of the message you're getting? SSDs vary widely in how much power they require. At 8TB, I can well believe it requires a lot. Indeed, I'm not sure I've even heard of a SSD that large. I...
by W. H. Heydt
Mon Aug 02, 2021 5:00 pm
Forum: Beginners
Topic: Improve performance of Raspberry Pi
Replies: 10
Views: 368

Re: Improve performance of Raspberry Pi

davidcoton wrote:
Mon Aug 02, 2021 3:56 pm
Ry_Darcy wrote:
Mon Aug 02, 2021 1:49 pm
I would have thought the RPI12 with the TGV option would be worth waiting for.
Check out your local coffee shop for details...

Ry
But Concorde went supersonic with version 001 .... :lol:
Sure...but look what FOD on takeoff did to one.
by W. H. Heydt
Mon Aug 02, 2021 4:54 pm
Forum: Compute Module
Topic: Feasibility of CM4 based Framework motherboard
Replies: 11
Views: 327

Re: Feasibility of CM4 based Framework motherboard

Keep in mind that what you're proposing is 8 discrete systems that aren't designed to be closely coupled. I was thinking Ethernet could serve as the interconnect. It appears the CM4 has at least one Ethernet port. I'm not an electrical engineer but I assume that with some work these could be wired ...
by W. H. Heydt
Mon Aug 02, 2021 5:59 am
Forum: General discussion
Topic: Cron sechduling to play music using mpg123 issue
Replies: 8
Views: 198

Re: Cron sechduling to play music using mpg123 issue

mpg123 having an issue with playing music at the scheduled time. Current code on crontab - 00 07 * * * /usr/bin/mpg123 --shuffle /home/pi/Documents/Cron-task/music/*.mp3 cron shows up on syslog but nothing is played over the speakers. music plays fine over the speakers but does not play with schedu...
by W. H. Heydt
Mon Aug 02, 2021 5:50 am
Forum: Compute Module
Topic: Feasibility of CM4 based Framework motherboard
Replies: 11
Views: 327

Re: Feasibility of CM4 based Framework motherboard

The new Framework DIY laptop has a replaceable motherboard that is 230mm by 105mm. I wonder, if one were to consider making a CM4-based motherboard for the Framework, if the goal were to create a cluster, how many CM4's could be feasibly put on such a motherboard? I think I saw that the CM4 is 55mm...
by W. H. Heydt
Mon Aug 02, 2021 2:29 am
Forum: General discussion
Topic: Newbie With Things To Do - RPi4 with Windows as NAS and Video Player
Replies: 24
Views: 642

Re: Newbie With Things To Do

W. H. Heydt you gave me the best answer from the rest. Seems like the other two post really didn't offer any advice like you did and for that I thank you and give you the gold star if I could. Thank you for those kind words. But you left out one little detail and that is my first task was to turn t...
by W. H. Heydt
Sun Aug 01, 2021 3:59 pm
Forum: General discussion
Topic: Newbie With Things To Do - RPi4 with Windows as NAS and Video Player
Replies: 24
Views: 642

Re: Newbie With Things To Do

I currently have a computer in one room (Desktop) and then another computer in the living room (laptop). Because I'm new to this forum and to PI, I would really apricate some slack. Not a problem. We were all new once. My first task would be to get a PI 4, with dual fans, 8 gbs of ram and the lates...
by W. H. Heydt
Fri Jul 30, 2021 7:01 pm
Forum: Beginners
Topic: How can I change the GPU memory to more than 128mb on Pi4?
Replies: 19
Views: 588

Re: How can I change the GPU memory to more than 128mb on Pi4?

No. The Pi 4 hardware isn't like an ordinary GPU which has dedicated RAM. Higher gpu_mem doesn't mean higher performance for a Pi. Does that mean I can run Steam games with low amounts of GPU memory? By and large, Steam games are written to run on x86 (Intel or AMD) hardware. Pis use ARM CPU cores....
by W. H. Heydt
Fri Jul 30, 2021 4:27 pm
Forum: General discussion
Topic: Can I use an ipad air 4 charger to power a raspberry pi 4?
Replies: 3
Views: 190

Re: Can I use an ipad air 4 charger to power a raspberry pi 4?

The "20W" in the 9v @ 2.22A. So long as (a) it actually adheres to the PD specification, (b) your Pi4B is new enough to have the correction to deal with PD power devices (very likely since you just got it) and (c) the device will actually deliver the rated current without excessive voltage...
by W. H. Heydt
Thu Jul 29, 2021 8:17 pm
Forum: Android
Topic: 1tb micro sd chip for Android 10 for Pi4b 8gb ram
Replies: 6
Views: 238

Re: 1tb micro sd chip for Android 10 for Pi4b 8gb ram

Start by using official tools to verify that your "1TB" microSD card is indeed a 1TB card. Also note that "TB" is terabyte. "tb" would be terabit, which is 128GB.

When it comes to high capacity SD cards, the world is rife with fakes.
by W. H. Heydt
Thu Jul 29, 2021 8:01 pm
Forum: General discussion
Topic: Undervolting the SDRAM on the Raspberry Pi 4 Appears not to Work
Replies: 4
Views: 238

Re: Undervolting the SDRAM on the Raspberry Pi 4 Appears not to Work

Pardon my ignorance, but what is it you expect undervolting the DRAM to accomplish?
by W. H. Heydt
Thu Jul 29, 2021 7:54 pm
Forum: General discussion
Topic: lightning bolt issue raspberry pi 4
Replies: 10
Views: 308

Re: lightning bolt issue raspberry pi 4

Losian wrote:
Thu Jul 29, 2021 11:54 am
important note: the raspberry pi became really hot once I start it with any power supply (including the one that came with it).
That would indicate that something is pulling excess current.
by W. H. Heydt
Thu Jul 29, 2021 3:39 am
Forum: Troubleshooting
Topic: Hacking prevention?: Preparing for a possible security breech. Need advice? Please!
Replies: 22
Views: 810

Re: Hacking prevention?: Preparing for a possible security breech. Need advice? Please!

Why do you want to monitor the temperature? Unless your PC was made before the 21st century, there is no risk of it overheating unless you cover it with a blanket and sit a heater beside it. There will be thermal safeguards built in to automatically manage this event. I think you're looking for sol...
by W. H. Heydt
Wed Jul 28, 2021 8:13 pm
Forum: Wanted
Topic: Where to hire RPi experts?
Replies: 8
Views: 454

Re: Where to hire RPi experts?

I will be looking to hire an experienced Pi developer in the near future for a relatively short-term contract project. I don't see a "Jobs" subforum here. So I have two questions: 1. Is there anywhere on these forums where a post about a job/project opening would be appropriate? 2. What j...
by W. H. Heydt
Wed Jul 28, 2021 4:15 pm
Forum: General discussion
Topic: DIY Ram upgrade?
Replies: 10
Views: 440

Re: DIY Ram upgrade?

The RAM limit on Pi 0-3 is 1GB, only the Pi4 can take larger chips, theoretically up to 16GB I think but we only make them up to 8GB. And the chips themselves vary, so for example the one on the Pi0 is not the same as the Pi 1/2/3/ due to packaging constraints. So far as I know, the limit for the P...
by W. H. Heydt
Wed Jul 28, 2021 4:11 pm
Forum: General discussion
Topic: Raspberry storage
Replies: 8
Views: 359

Re: Raspberry storage

One other point... 8.3GB on a Pi is a quite a lot of space. Unless you're storing large audio or video files, it should do perfectly well for the foreseeable future.
by W. H. Heydt
Tue Jul 27, 2021 8:22 pm
Forum: General discussion
Topic: RPI filesystem accross multiple USB devices ?
Replies: 11
Views: 355

Re: RPI filesystem accross multiple USB devices ?

Minor point... Any time a mass storage device is mounted, the file system spans all existing mass storage devices plus the one just added. That's simply the way *nix file systems work.
by W. H. Heydt
Tue Jul 27, 2021 4:31 pm
Forum: General discussion
Topic: I'm new here, need a guide!
Replies: 7
Views: 447

Re: I'm new here, need a guide!

Hii, I am new here!! I do not see the 'New Topic' to add my question regarding my problem with Rpi 4B that I got 3 days before. My RPi 4B is not showing the green light when I add the sd card to it but it blinks when I remove the sd card. But wither ways I cannot have the display on my PC though I ...
by W. H. Heydt
Tue Jul 27, 2021 1:45 am
Forum: Off topic discussion
Topic: RP2040 available on AliExpress
Replies: 31
Views: 2747

Re: RP2040 available on AliExpress

In my opinion, the RP2040 as a 32-bit integrated circuit is very good. I have not yet come up with what such a scheme can be used for, but I am sure that it will definitely be useful. I saw a video of how a touchpad and a keyboard were made with such a scheme, it's probably worth trying to combine ...
by W. H. Heydt
Tue Jul 27, 2021 1:39 am
Forum: General discussion
Topic: Stable OS for pi 400
Replies: 10
Views: 483

Re: Stable OS for pi 400

RPiOS is the fully supported OS for all Pi models, including the Pi400.

If you have a problem with RPiOS, this is the place to get help. For other OSes, you should probably check with their support forums.

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