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by W. H. Heydt
Fri Jan 18, 2019 5:49 am
Forum: Compute Module
Topic: Compute Module 3 - eMMC boot from USB
Replies: 4
Views: 582

Re: Compute Module 3 - eMMC boot from USB

Replace the CM3 module with a CM3L then boot from USB? That's assuming opening the case won't void any warranty. Yes, that can be done. I have a CM3L that boots from an SSD by mounting both to an early model WD SATA Adapter. There is no "case" to open. The CM series boards are just that...boards. E...
by W. H. Heydt
Fri Jan 18, 2019 5:43 am
Forum: Advanced users
Topic: careless boot over wifi
Replies: 4
Views: 73

Re: careless boot over wifi

Other than a few "One Time" bits, there is no field modifiable storage on a Pi. Where do you plan to store the wireless configuration and credentials?

(In short...no, it won't work.)
by W. H. Heydt
Fri Jan 18, 2019 5:36 am
Forum: General discussion
Topic: new to soldering - safety questions, etc.
Replies: 23
Views: 355

Re: new to soldering - safety questions, etc.

Imperf3kt wrote:
Fri Jan 18, 2019 4:07 am
According to the link, it is 63 / 37 (37% lead, 63% tin)
There doesn't seem to be any resin with that ratio (usually resin core is 2%)
63/37 is the lead-tin eutectic alloy. One also--commonly---sees 60/40, which is close enough to behave the same.
by W. H. Heydt
Fri Jan 18, 2019 12:50 am
Forum: Beginners
Topic: Solution to use same keyboard and mouse as desktop PC?
Replies: 10
Views: 159

Re: Solution to use same keyboard and mouse as desktop PC?

Maybe I'm old fashioned but... For Pis, I use a 4-port HDMI/USB KVM switch. Specifically, an Iogear MiniView: https://www.iogear.com/product/GCS1794MDPKIT/ Because other equipment I have uses VGA and PS/2 connectors, I slave the HDMI/USB KVM to one set of ports on an 8-port Trendnet VGA & PS/2 KVM t...
by W. H. Heydt
Thu Jan 17, 2019 8:08 pm
Forum: General discussion
Topic: How to contact moderator directly?
Replies: 15
Views: 400

Re: How to contact moderator directly?

But no one will do that on a normal house search. But cold boot attacks should be expected by police. Espcially for the Raspberry PI its very easy, even if they aren't prepared with the right SD-Card. You just need a powerbank to carry it with you and have all the time to analyze nonzeroed RAM. Rii...
by W. H. Heydt
Wed Jan 16, 2019 2:49 pm
Forum: Compute Module
Topic: Extending internal flash storage using SD card
Replies: 2
Views: 507

Re: Extending internal flash storage using SD card

Two other options...NEC markets a version of the CM3 with 16GB of eMMC flash. The RPF markets the CM3L that permits you to have however much eMMC you want on the carrier board, or to have a SD slot on the carrier.
by W. H. Heydt
Wed Jan 16, 2019 2:36 pm
Forum: General discussion
Topic: switching to 64bit kernel
Replies: 6
Views: 209

Re: switching to 64bit kernel

First...NOOBS is not an operating system. It is an OS installer. Second, Raspbian (the fully supported OS for Pi by the Raspberry Pi Foundation) is a 32-bit system. There is a long thread in this forum of people asking for an official 64-bit OS and debating the virtues and methods of various options...
by W. H. Heydt
Tue Jan 15, 2019 2:37 pm
Forum: General discussion
Topic: Help with first RPi purchase
Replies: 9
Views: 552

Re: Help with first RPi purchase

LTolledo wrote:
Tue Jan 15, 2019 12:22 pm
but if you're going to do some beginner's electronics tinkering with python... consider adding the RPiZW, and do the electronics tinkering there...
If that is the case, and the Pi0 form factor is indicated by the nature of the project, the Pi0WH would be the way to go.
by W. H. Heydt
Mon Jan 14, 2019 2:30 pm
Forum: General discussion
Topic: GUI to Run two programs
Replies: 26
Views: 845

Re: GUI to Run two programs

Parth1234 wrote:
Mon Jan 14, 2019 11:49 am
I want single application Where user can enable/ disable any project (python script)
Linux is a multi-user, multi-tasking operating system. so, yes, a Pi can run multiple programs concurrently.
by W. H. Heydt
Mon Jan 14, 2019 2:28 pm
Forum: General discussion
Topic: Is it best to buy Pi 3 B+ now or wait for new one?
Replies: 29
Views: 839

Re: Is it best to buy Pi 3 B+ now or wait for new one?

What will it be called? Pi 3 C? Pi4. Still a quite while before its comes out though! And Jamesh is One who Knows. Two questions for him - (one) so not Pi4B? (two) You've said before "It'll be cool" so does it have a Peltier cooler built-in? Or that's the generic name for the Pi4B, Pi4A, CM4, and C...
by W. H. Heydt
Mon Jan 14, 2019 6:26 am
Forum: General discussion
Topic: Is it best to buy Pi 3 B+ now or wait for new one?
Replies: 29
Views: 839

Re: Is it best to buy Pi 3 B+ now or wait for new one?

I don't know if it is available in India. Minor point...no one knew you were in India until you posted this. It is an example of why including your location in the part of your profile that shows with each post is helpful. Thanks will keep in mind. I have a USB charger which says it has 0.35A and o...
by W. H. Heydt
Mon Jan 14, 2019 5:12 am
Forum: Beginners
Topic: What is a good Power Bank for Raspberry Pi Zero W?
Replies: 4
Views: 191

Re: What is a good Power Bank for Raspberry Pi Zero W?

I use these https://www.monoprice.com/product?c_id=108&cp_id=10831&cs_id=1083110&p_id=15117&seq=1&format=2 to power Pi0 or Pi0W projects. It will run for about 12 hours at a time. Very recently, I've been successfully powering a Pi3A+ with one, but that depends on how heavily you're going to load th...
by W. H. Heydt
Mon Jan 14, 2019 5:06 am
Forum: General discussion
Topic: Is it best to buy Pi 3 B+ now or wait for new one?
Replies: 29
Views: 839

Re: Is it best to buy Pi 3 B+ now or wait for new one?

shrewdgamer wrote:
Sun Jan 13, 2019 5:37 pm
I don't know if it is available in India.
Minor point...no one knew you were in India until you posted this. It is an example of why including your location in the part of your profile that shows with each post is helpful.
by W. H. Heydt
Sun Jan 13, 2019 10:26 pm
Forum: Advanced users
Topic: Raspberry PI cold boot attack protected / Zero out RAM after boot?
Replies: 71
Views: 2223

Re: Raspberry PI cold boot attack protected / Zero out RAM after boot?

More to the point...when you pull the power to swap SD cards, you will lose everything in the *Dynamic* Random Access Memory. 1) it doesn't lose contents instantly. 2) can't you just short the "RUN" contacts on the board to get it to reboot? [/quote] Takes time to swap the SD card so a forced reboo...
by W. H. Heydt
Sun Jan 13, 2019 9:17 pm
Forum: General discussion
Topic: Pi + Arduino
Replies: 2
Views: 71

Re: Pi + Arduino

What I was thinking what if I buy relay that I will put on a Pi charger. There is nothing to "charge" on a Pi. Perhaps you mean the Power Supply Unit (PSU)? If you really are using a re-purposed cell phone or tablet charger to power your Pi, that *might* be why you're getting crashes. On Arduino I ...
by W. H. Heydt
Sun Jan 13, 2019 9:14 pm
Forum: General discussion
Topic: Is it best to buy Pi 3 B+ now or wait for new one?
Replies: 29
Views: 839

Re: Is it best to buy Pi 3 B+ now or wait for new one?

The only time a new Pi comes out is when you've waited for a while, deliberated and then needed to buy one so get one. Within the following week they then usually produce a new model ;-) Does it count that I've been thinking over picking up some Pi2Bv1.2 boards for a while now? If I buy them does t...
by W. H. Heydt
Sun Jan 13, 2019 9:12 pm
Forum: General discussion
Topic: Is it best to buy Pi 3 B+ now or wait for new one?
Replies: 29
Views: 839

Re: Is it best to buy Pi 3 B+ now or wait for new one?

What will it be called? Pi 3 C? Pi4. Still a quite while before its comes out though! The most reent quote I've seen from Dr. Upton was that he is looking at the 2020 to 2021 timeframe. Sigh... When the Pi3B came out in 2016, he said "2 to 3 years". While I am sympathetic to schedule slippage, as I...
by W. H. Heydt
Sun Jan 13, 2019 6:18 am
Forum: Advanced users
Topic: Raspberry PI cold boot attack protected / Zero out RAM after boot?
Replies: 71
Views: 2223

Re: Raspberry PI cold boot attack protected / Zero out RAM after boot?

More to the point...when you pull the power to swap SD cards, you will lose everything in the *Dynamic* Random Access Memory. DRAM has to refreshed periodically or it "forgets" everything, and without power, that happens very quickly.
by W. H. Heydt
Sun Jan 13, 2019 6:14 am
Forum: Troubleshooting
Topic: USB not detected with VCC pin taped and active hub. Normal?
Replies: 3
Views: 80

Re: USB not detected with VCC pin taped and active hub. Normal?

I have yet to see a USB hub that I would trust to power a Pi3B. Even the ones that have a "high power"/"charging" port usually won't provide the kind of current a Pi3B will need. I'm also curious how you power a hub with the RPF PSU. I don't recall seeing any hubs with a micro-B connector. Plus, nor...
by W. H. Heydt
Sun Jan 13, 2019 6:07 am
Forum: Beginners
Topic: Mouse and USB ports not working?
Replies: 14
Views: 252

Re: Mouse and USB ports not working?

Ok so I opened up the box and find that it says Raspberry Pi 3 model v b1 There are wires connecting the usb to a usb accessible outside of the box. I can’t type anything onto the computer as everything is controlled by USB, mouse and keyboard. The only way to shut it down without a mouse or keyboa...
by W. H. Heydt
Sun Jan 13, 2019 6:00 am
Forum: Beginners
Topic: Mouse and USB ports not working?
Replies: 14
Views: 252

Re: Mouse and USB ports not working?

I’m not sure how to find the model of the raspberry pi, it’s a prebuilt machine for my CNC router. So it’s combined with a controller. As for power supply it’s plugged into a 110v outlet. I can’t envision your installation but it’s important to determine if your power supply has enough current to s...
by W. H. Heydt
Sun Jan 13, 2019 5:59 am
Forum: Beginners
Topic: Mouse and USB ports not working?
Replies: 14
Views: 252

Re: Mouse and USB ports not working?

How hard is to setup a new SD card? I’m quite afraid to wipe out the hard drive in an attempt and end up with a paper weight It's quite easy, actually. See the stickies at the top of this page. The bigger issue is going to be what additional software has been loaded onto the existing SD card. Now.....
by W. H. Heydt
Sat Jan 12, 2019 8:50 pm
Forum: Beginners
Topic: Mouse and USB ports not working?
Replies: 14
Views: 252

Re: Mouse and USB ports not working?

I’m was a bit snippy and I apologize. I’m frustrated. How can I shut it down when I lose the top bar with the raspberry shut down icon? I hate pulling a plug, but I found ctl alt delete doesn’t work on these guys. IF you have a command line prompt, either because it's configured to have one up, or ...
by W. H. Heydt
Sat Jan 12, 2019 4:56 pm
Forum: Beginners
Topic: Mouse and USB ports not working?
Replies: 14
Views: 252

Re: Mouse and USB ports not working?

Sad. I was really hoping for a reply Given when you posted, a sizable fraction of the active Pi world was asleep. Forums like these should be considered to be asynchronous. As for the underlying issue... How do you shut down your Pi? If you're just pulling the plug, there is a very real chance of w...
by W. H. Heydt
Sat Jan 12, 2019 4:48 pm
Forum: General discussion
Topic: run win3.1 dos legacy software - not games
Replies: 4
Views: 192

Re: run win3.1 dos legacy software - not games

When Win 3.1 was in use, games were tougher on PCs than business software. I'll second the recommendation to look at DOSbox. I ran games from that era on a 256MB Pi Model B pretty well, and a Pi3B+ is easily 10 times faster than a Model B...not to mention having 4 times the RAM. The actual advice, h...

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