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by W. H. Heydt
Wed May 23, 2018 2:29 pm
Forum: Beginners
Topic: Pi 3 B+ Booting from mSATA SSD
Replies: 5
Views: 117

Re: Pi 3 B+ Booting from mSATA SSD

[Ignore the OTPbit section, the 3B+ by default has this already set.... + reason to get RPi3B+ Yes, in that it saves a couple of steps and a bit of time. No, in that it isn't difficult and doesn't take very long. One still has to set the OTP bit to do a USB boot on a Pi3B or a Pi2Bv1.2. Going throu...
by W. H. Heydt
Wed May 23, 2018 12:57 am
Forum: Beginners
Topic: used rPI and microSD options
Replies: 13
Views: 206

Re: used rPI and microSD options

@epoch1970 (apart a few OTP bits the factory or previous owner might have flipped) ^ what exactly does this mean, and where can i read more about this? It is possible on a Pi3B or Pi2bv1.2 to set an OTP bit to permit booting directly from a USB device. There are a couple of other bits that can (use...
by W. H. Heydt
Wed May 23, 2018 12:54 am
Forum: Beginners
Topic: used rPI and microSD options
Replies: 13
Views: 206

Re: used rPI and microSD options

nm_rpi wrote:
Tue May 22, 2018 6:19 pm
Thank you all. I will abstain from buying from iffy listings. On a side note, let me know if you have any recommendations for HDD 500GB which are relatively small in size.
Take your pick... https://www.newegg.com/Product/ProductL ... 025%204093
by W. H. Heydt
Tue May 22, 2018 3:35 pm
Forum: Off topic discussion
Topic: I would like to create a Call Alerter based off of Caller ID
Replies: 4
Views: 201

Re: I would like to create a Call Alerter based off of Caller ID

If you add up the price of a RPi, PSU, SD card, POTS/PSTN modem, screen, and perhaps a keyboard* and protective case it will exceed that of a ready-to-use call-blocker. (* keyboard needed if you want the device to be standalone and capable of easy editing of number database.) I think this is a case...
by W. H. Heydt
Tue May 22, 2018 3:26 pm
Forum: Beginners
Topic: used rPI and microSD options
Replies: 13
Views: 206

Re: used rPI and microSD options

Agree with the others. The price/size of the SD card is Highly Suspicious. If you really need that much storage, and especially if you want it to be reliable, get a 2.5" form factor HDD or SSD, configure it for USB booting and use that.
by W. H. Heydt
Tue May 22, 2018 3:22 pm
Forum: Beginners
Topic: [BEGINNER] RaspberryPi Care
Replies: 3
Views: 80

Re: [BEGINNER] RaspberryPi Care

It's probably better to press down on the printed circuit board (PCB), rather than any of the components on the board. Chip packaes (like the SoC) aren't exactly fragile, but they're not designed to be physically robust, either. So long as your Pi boots once it has been treated the way you did, it's...
by W. H. Heydt
Tue May 22, 2018 3:15 pm
Forum: Beginners
Topic: Moving from Pi2B+ to Pi3B+ Jessie to Stretch shortcut?
Replies: 1
Views: 38

Re: Moving from Pi2B+ to Pi3B+ Jessie to Stretch shortcut?

Part of the point of Raspbian is that it will run on any Pi. There is the caveat that the version you're running has to be newer than the board you're running it on, but that is easy to take care of so long as you are on the current major release...and you've taken care of that by upgrading to Stret...
by W. H. Heydt
Tue May 22, 2018 2:58 pm
Forum: General discussion
Topic: KVM on rasberry pi 3
Replies: 11
Views: 288

Re: KVM on rasberry pi 3

I'm afraid that this is one of those threads that leads to--at least inital--head scratching. To me, "KVM" means a "Keyboard, Video, Mouse" switch...and *any* Pi will work with one.
by W. H. Heydt
Tue May 22, 2018 2:39 pm
Forum: General discussion
Topic: Raspberry Power Charger
Replies: 3
Views: 95

Re: Raspberry Power Charger

And to answer the other question... Yes. You can buy USB to micro-USB cables. Technically it would be a USB-A to USB micro-B. Here is an example: https://www.monoprice.com/product?p_id=5458
by W. H. Heydt
Tue May 22, 2018 4:55 am
Forum: Beginners
Topic: Safe to power multiple Pi's into 1 usb-powered-hub?
Replies: 4
Views: 117

Re: Safe to power multiple Pi's into 1 usb-powered-hub?

It depends on which model of Pi you are using, what the output of the PSU is, and whether or not the hub limits the power on each port (the spec for USB 2 is 500mA per port). Without those details, but assuming the hub PSU is at least 2A, it would work with Pi0/Pi0WH and perhaps A+ boards, probably ...
by W. H. Heydt
Mon May 21, 2018 4:52 pm
Forum: General discussion
Topic: Buying a Pi for the first time
Replies: 5
Views: 200

Re: Buying a Pi for the first time

I can't speak to kits (I've never gone that route). The basic setup is Pi (current top of the line--Pi3B+ at present is the way to go), SD card (getting two is an excellent idea), PSU (use the official one and you can't go wrong), a simple USB keyboard (I like the Logitech K-120), basic mouse (I get...
by W. H. Heydt
Mon May 21, 2018 4:37 pm
Forum: General discussion
Topic: Raspberry Pi Lockable Case That Limits Access to I/O Ports
Replies: 2
Views: 87

Re: Raspberry Pi Lockable Case That Limits Access to I/O Ports

I would think the solution would be to lock the Pi (and its case) into the kiosk enclosure.
by W. H. Heydt
Sat May 19, 2018 2:25 pm
Forum: Off topic discussion
Topic: Pi Towers at Maker Faire?
Replies: 3
Views: 1154

Re: Pi Towers at Maker Faire?

Hmmm... So I guess the answer is, everybody went to Windsor instead.
by W. H. Heydt
Sat May 19, 2018 2:22 pm
Forum: General discussion
Topic: After upgrade sometimes get defualt screen image back
Replies: 2
Views: 96

Re: After upgrade sometimes get defualt screen image back

I'm afraid the answer is...live with it. Upgrades and dist-upgrades bring in new versions of various files. Among those is the Raspbian UI changes.
by W. H. Heydt
Thu May 17, 2018 5:58 pm
Forum: Beginners
Topic: Where to buy SD cards from?
Replies: 17
Views: 442

Re: Where to buy SD cards from?

I generally go through Newegg. Costco has occasional goo deals, but they aren't carrying "smaller" (e.g. less than 32GB) cards any more. For SD cards, I tend to prefer mostly 8GB, with some 16GB. If I go over that, I switch to SSDs--which I also get through Newegg.
by W. H. Heydt
Thu May 17, 2018 3:46 am
Forum: General discussion
Topic: Where does the 3B+ put software I install myself.
Replies: 2
Views: 166

Re: Where does the 3B+ put software I install myself.

First, you have to know what the name of the program really is. Second, use the "find" command to find it.

You might also check the man page for the program. A config file may be a "dot file" in your home directory, or be under .config.
by W. H. Heydt
Tue May 15, 2018 12:48 am
Forum: Beginners
Topic: Is bluetooth on rpi3 compatible with BLE hm10 modules?
Replies: 31
Views: 519

Re: Is bluetooth on rpi3 compatible with BLE hm10 modules?

That's what standards are for. If everything adheres to the BLE standards, it will work. If either one doesn't, it may not. (Some companies are...notorious...for not adhering to standards.) The easiest way to find out is to get a Pi3B+ and try it. You'll only be out the cost of the Pi (and possibly ...
by W. H. Heydt
Mon May 14, 2018 6:39 pm
Forum: General discussion
Topic: Raspberry pi 3b hacked need help
Replies: 7
Views: 426

Re: Raspberry pi 3b hacked need help

What about like a cmos reset? There is no CMOS or any other form of writable BIOS on a Pi. The only storage on the chip is ROM and cache. Anything in the cache memory goes away when the power does. The equivalent data to a CMOS BIOS is the file "bootcode.bin" in the FAT partition of the boot device.
by W. H. Heydt
Mon May 14, 2018 6:32 pm
Forum: General discussion
Topic: BCM2837 processor PIN Comfiguration.
Replies: 7
Views: 313

Re: BCM2837 processor PIN Comfiguration.

Well Hardkernel only sourced 500 BCM2835 SoC for the Odroid-W, and considering that SoC was used in other devices as well, my answer above was based on best judgement. First time I've seen that particular number, though it's certainly more plausible than the originally rumored 5000. Supposedly what...
by W. H. Heydt
Mon May 14, 2018 2:29 pm
Forum: Beginners
Topic: USB Booting Question
Replies: 6
Views: 190

Re: USB Booting Question

dizzo wrote:
Mon May 14, 2018 12:37 am
So my ultimate question is; what do I do to erase Raspbian from the SD card safely without also deleting the stuff (the bootloader I think) that still needs to be on the SD card.
Shut down the Pi. Remove the SD card. Restart the Pi. That's it.
by W. H. Heydt
Mon May 14, 2018 2:24 pm
Forum: General discussion
Topic: BCM2837 processor PIN Comfiguration.
Replies: 7
Views: 313

Re: BCM2837 processor PIN Comfiguration.

I am Jagadish working as an embedded project developer, for one of our application we are planned to design our own board with "BCM2837" Arm A53 Processor, but from last few days on wards i am trying to find out the pin description of that processor, if anybody have the pin description please suppo...
by W. H. Heydt
Mon May 14, 2018 2:09 am
Forum: Beginners
Topic: Disk image of pre-installed Raspian (GUI) + Opencv or Simplecv
Replies: 3
Views: 129

Re: Disk image of pre-installed Raspian (GUI) + Opencv or Simplecv

Fruitoftheloom covered my first question. (I suspect you actually have a Pi3B or a Pi3B+.) What you can do is build an image that has all the features you want, and then take a backup, or even a minimize it and back it up. Then you have an imgae that you can write to as many cards as you like, with ...
by W. H. Heydt
Sun May 13, 2018 2:52 am
Forum: Beginners
Topic: Can i power a rpi3 and a 5” lcd from 1 power adapter?
Replies: 7
Views: 218

Re: Can i power a rpi3 and a 5” lcd from 1 power adapter?

Maybe, but you'll have to provide more information for a definitive answer. What are the power input specs for the LCD? What else will be attached to the Pi3B? How heavily loaded will the Pi3B get in normal use? Peak use?
by W. H. Heydt
Sat May 12, 2018 7:18 pm
Forum: Raspbian
Topic: [Solved] Missing packages....that seem unlikely
Replies: 11
Views: 282

Re: [Solved] Missing packages....that seem unlikely

DougieLawson wrote:
Sat May 12, 2018 6:56 pm
It's a one-shot problem. The Raspberry Pi folks and their web hosting company (Mythic Beasts) moved some of the repos to a new domains.
Ah... That would explain it. Still...good to know that if I see the problem in the future, I know what to do before seeking help.
by W. H. Heydt
Sat May 12, 2018 6:46 pm
Forum: Raspbian
Topic: [Solved] Missing packages....that seem unlikely
Replies: 11
Views: 282

Re: Missing packages....that seem unlikely

Valid question...but, yes. I used the March release and did an update and dist-upgrade to it. Sorry to be naggingly persistent, but after the *upgrade , did you run update AGAIN? Because failing to do so gives just the symptoms you describe... Thanks. No I didn't. I've never seen a need to run a se...

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