hybridfree/eevblog-posts huggingface dataset:
hacking CASIO CP400, anyone? - Page 1
Forum section: electronics / general

author: DiTBho
author_rank: Super Contributor
timestamp: December 04, 2022, 05:22:28 pm
content: I spent my second BlackFriday bonus on a CASIO CP400 graphing calculator.It's big calculator with a very nice LCD, and powered by a ~50 Mhz SH4 CPU, downclocked a bit to save power.Unfortunately there is no SDK available from CASIO, you cannot develop and run your own applications.But nothing can stop you from hacking the firmware, writing a loader (S19?) and having fun.How to spend time during Christmas holidays. Anyone?

author: DiTBho
author_rank: Super Contributor
timestamp: December 04, 2022, 08:41:35 pm
content: Available on Calcuso for 140-150 euro.Cheaper than on Amazon

author: neil555
author_rank: Contributor
timestamp: December 04, 2022, 09:07:30 pm
content: You might find this usefulhttps://the6p4c.github.io/2018/01/15/hacking-the-gc-part-1.html

author: DiTBho
author_rank: Super Contributor
timestamp: December 05, 2022, 12:31:12 pm
content: Quote from: neil555 on December 04, 2022, 09:07:30 pmNice
W11 on PC that does not meet minimun requirements  ? - Page 1
Forum section: electronics / general

author: Lindley
author_rank: Regular Contributor
timestamp: November 26, 2022, 03:55:43 pm
content: Microsoft detail the way it can be done, but give the warning below as its said to be only intended to allow businesses to see how W11 runs.QuoteHas anyone done this on an old PC and know if updates do come through or not ?We have W11 on a new laptop which we like so would like to run it on the older non compliant desktop eg Intel 4170.

author: DavidAlfa
author_rank: Super Contributor
timestamp: November 26, 2022, 11:34:57 pm
content: Sure, I also did with my "old" 2012 i7-3770K, no TPM, Windows still receiving almost daily updates.Just make the registry hack and go for it:https://www.tomshardware.com/how-to/bypass-windows-11-tpm-requirementMy advice is to install 21H2 for now, 22H2 came with a lot of bugs.Open Rufus, select "Disk or ISO image", then click the arrow on SELECT and choose DOWNLOAD.When clicking start, a dialog will appear asking what to download, choose the Windows 11 version you want.

author: coromonadalix
author_rank: Super Contributor
timestamp: November 29, 2022, 12:09:02 am
content: And Rufus will give you some tricks to install on unsupported hardware, it even worked on an oooooolld Athlon Fx cpu loll

author: 50ShadesOfDirt
author_rank: Regular Contributor
timestamp: November 30, 2022, 02:53:48 pm
content: Sounds like FUD from MS to tell you that you might not get future updates "delivered" to this PC, because there is something MS doesn't like about it ... Most folks would *pay* to not have automatic updates delivered!In your case, if updates did stop happening automatically, you can still go to the MS update website and just pull down the updates yourself, on any time schedule you prefer.
Old mobile phone only shows emergency calls only - Page 1
Forum section: electronics / general

author: Deactivated-1
author_rank: Frequent Contributor
timestamp: November 10, 2022, 01:17:15 am
content: I have many old phones that always show "emergency calls only", but most of them would start working again if I squeezed the phone around the cellular antenna area, so I'm assuming they just had failed solder joints.but I'm trying to get an old Benefon phone working, and it shows 2 bars of signal, it occasionally shows "searching for networks", after a while it just goes back to "emergency calls only" or sometimes "no connection".if I call, it just shows "call failed"I can't find info on if these old phones just don't work on today's signal standards, so do they?

author: langwadt
author_rank: Super Contributor
timestamp: November 10, 2022, 01:38:50 am
content: bad connection to the sim card?

author: Halcyon
author_rank: Unknown
timestamp: November 12, 2022, 05:48:53 am
content: GSM-900 etc... are just the frequency bands that are supported by the handset. You also need to consider the type of network you're connecting to and whether your old phone supports them. A lot of those old phones were 2G only, which has already been phased out in many parts of the world. Next to go will be 3G, which in Australia already commenced in 2019, with a complete shutdown of 3G services due to happen in 2024.Check to see what types of networks your carrier provides in your area.

author: 50ShadesOfDirt
author_rank: Regular Contributor
timestamp: November 15, 2022, 05:43:04 pm
content: Ditto on a handful of old phones lying around in shoebox, including my beloved moto StarTac from many years ago (or thereabouts). 2G & 3G killed off in my area (ATT), and 4G LTE probably not far behind.This thread made me think of building my own 2G "tower" (EnodeB), and sure enough, some folks have done such a thing, with not many parts or costs. It's a bit of a rabbit-hole (and I'm still slogging through it all), but basically a few folks and org's have put together SDR & such, rolling their own sim cards, to the point where two old phones can talk to each other, and can use the internet to talk to the rest of the world."If Police Departments can buy a stingray on government funding of a few 10's or 100's of thousands, we should be able to hack something together for a few hundreds" ... one of the hacker's wording.OpenBTS.org ...various Hackaday and github pages for same ...Also found a company that sells "turnkey" solutions for a "testing" tower in a box (EnodeB, GnodeB flavors) ... one of the hacking pages listed it. But I hate paying for it if it can be hacked together ... and I love SDR projects.Again, lots of reading ...
Floppy disk drive - Page 1
Forum section: electronics / general

author: BeBuLamar
author_rank: Super Contributor
timestamp: November 07, 2022, 04:02:10 pm
content: I am looking for good 1.44MB 3.5" floppy disk drive that has the floppy interface (not USB). Of course I wish not to pay a lot. I am in the USA.

author: pqass
author_rank: Super Contributor
timestamp: November 07, 2022, 04:29:25 pm
content: eBay.com has a few under $10.Search NA-only:https://www.ebay.com/sch/i.html?_from=R40&_nkw=floppy+drive&_in_kw=1&_ex_kw=&_sacat=0&_udlo=&_udhi=&_ftrt=901&_ftrv=1&_sabdlo=&_sabdhi=&_samilow=&_samihi=&_sadis=15&_stpos=L6H0A4&_fsradio2=%26LH_PrefLoc%3D1&_sargn=-1%26saslc%3D1&_salic=1&LH_SubLocation=1&_sop=12&_dmd=1&_ipg=60The ones I found:https://www.ebay.com/itm/185648675323https://www.ebay.com/itm/385113031478https://www.ebay.com/itm/330424667732

author: Halcyon
author_rank: Unknown
timestamp: November 07, 2022, 10:15:02 pm
content: 1.44MB floppy disk drives are still being sold, brand new. You should be able to pick up a new Sony drive for about $15-20.

author: BeBuLamar
author_rank: Super Contributor
timestamp: November 07, 2022, 11:41:22 pm
content: I thought so but when I do a search I don't find it.

author: Halcyon
author_rank: Unknown
timestamp: November 09, 2022, 06:08:43 am
content: Actually, I withdraw my previous comment. Sony stopped making those drives about 12 years ago. Whatever was left in stock has probably disappeared by now. eBay is probably the only place you'll get decent quality drives these days.
how to filter gmail? and automatically redirect emails into categories - Page 1
Forum section: electronics / general

author: DiTBho
author_rank: Super Contributor
timestamp: November 24, 2022, 02:04:30 pm
content: so, I have two Gmail accounts, one is business one is private.Since I submitted to a couple of dev mailing list, I am receiving too many emails per day, mixed with other stuff.Is there a way to automatically redirect emails into categories?Put emails from { @yyyy11, @yyyy12, .... @yyyy1N } into the category1..Put emails from { @yyyyn1, @yyyyn2, .... @yyyyNN } into the categoryNPlus, how to fetch emails at Google mail?

author: SiliconWizard
author_rank: Super Contributor
timestamp: November 24, 2022, 07:30:17 pm
content: 1. Don't use gmail.2. Or use a mail client to access it. That's what I do with one pro gmail account that I need to use. I use thunderbird which has a pretty decent rule system for putting emails in categories and subfolders automatically.

author: sokoloff
author_rank: Super Contributor
timestamp: November 24, 2022, 07:33:42 pm
content: Filtering:https://support.google.com/mail/answer/6579?hl=enAccessing offline:I use a couple different IMAP clients to access my gmail. This has the advantage that all of them "see the same mailbox" and I can work seamlessly across the different devices.https://support.google.com/mail/answer/78892?hl=en

author: ejeffrey
author_rank: Super Contributor
timestamp: November 24, 2022, 08:25:16 pm
content: Sure you can.Gmail doesn't have folders per se, it has tags. The difference is that a message can have multiple tags. You can create filters to assign a tag to incoming messages, and then check the box "skip inbox." This is the key to get it to not automatically apply the "inbox" tag to the message in addition to whatever tags you create.Here is the support page on how to do it:https://support.google.com/mail/answer/6579?hl=en#zippy=%2Ccreate-a-filter

author: DiTBho
author_rank: Super Contributor
timestamp: November 25, 2022, 12:13:24 am
content: Quote from: SiliconWizard on November 24, 2022, 07:30:17 pmI have to use Gmail, lot of reasons for that.Don t like it, but I have to.

author: SiliconWizard
author_rank: Super Contributor
timestamp: November 25, 2022, 12:15:32 am
content: Use Thunderbird as a client then. Works fine.
hotspot data: find out what is using bandwidth? - Page 1
Forum section: electronics / general

author: JBeale
author_rank: Frequent Contributor
timestamp: October 20, 2022, 02:39:16 pm
content: My mom who lives in a rural area had few options after the last local DSL provider closed up shop. She was limping along on a slow network connection over an old cellular modem. I suggested she try an Android 5G phone as a hotspot, because I found my own phone had a much better data rate with mobile data at her place, than her old setup did. She managed to get that set up. I assumed that the so-called "unlimited data" which is actually a 25 GB/month data plan would be enough, because what she does is: "mostly email, reading newspapers, playing a Words-with-friends and a crossword per day, sending photos to the computer to print".So it turns out when she checked her Tello phone plan after a few days of use, that it shows a usage of roughly 1500 MB each day (!) That is _way_ more than I expected given her typical use. There is her computer and a printer connected to her phone wifi hotspot. Is it possible the wifi-connected printer is bouncing the whole print job to the network and back- surely not? How do you track that down? Her computer is a 2021 iMac. The hotspot phone is what Amazon called a "refurbished" Samsung Galaxy A32 5G on Android 11. The phone thinks it's fully updated, despite Android 12 being released for it, making me think maybe it was not originally a US model or something like that. Did the phone come stocked with malware that's busy downloading ads, or running a TOR network etc. in the background?I'm not a mac person. Does the current macOS have something like a data odometer that keeps track of the total # of MB sent and received over the network, which is wifi in this case?

author: JPortici
author_rank: Super Contributor
timestamp: October 20, 2022, 03:31:39 pm
content: Quote from: JBeale on October 20, 2022, 02:39:16 pmsurely yes if HP. Probably yes for others, read the fine print of terms and conditions. Print through wifi will send the file to their servers and back. My parents HP printer doesn't work with wifi only (when it can't contact the mothership)Mac can see the network usage statistics (for the mac only of course) through the Activity Monitor

author: AndyBeez
author_rank: Frequent Contributor
timestamp: October 20, 2022, 04:25:54 pm
content: One culprit, iCloud synchronization.Is the iMac backing up files, images and media to her iCloud account? Check too for rogue syncing with Google drive, Dropbox, etc.Does your mom use Facetime, Zoom or Teams? Video and audio are bandwidth burners.Furthermore, Siri, Alexa and other smart features, plus smart TVs and video on demand services, gorge themselves on your paid for GBs.You can try installing an adblocker on her Safari to ease the junk bytes.For MacOS Activity Monitor, which monitors everything including network, seehttps://support.apple.com/en-gb/guide/activity-monitor/welcome/mac
Android Phone Memory Not Usable - Page 1
Forum section: electronics / general

author: EPAIII
author_rank: Super Contributor
timestamp: October 10, 2022, 05:52:50 am
content: I have an older Android phone. It was made obsolete for phone use by the latest upgrade so I had to get a newer model. But the older phone still allows internet access and the apps still work so I plan to use it for some things. One possible use may be as a viewfinder when I use the new phone to record videos.My problem is, when I try to install any new apps, I get a screen that says I need to free memory by uninstalling existing apps before I can install new ones. I have a 256 GB SD SanDisk installed with only 2.99 GB showing as used. That should leave over 250 GB available. And the phone's original storage is 32 GB of which only 18.51 GB is used. I should have ample storage available. But I can't get past that screen that says I must remove apps first. I already removed several that I no longer want that added up to the required amount needed, but the amount of space it says I need was not even reduced.I am trying to install a 500 MB app with no luck. It should fit in the original storage space with at least 13 GB unused space. I set the memory manager to ON but that did not help.Any suggestions would be appreciated.

author: 50ShadesOfDirt
author_rank: Regular Contributor
timestamp: October 10, 2022, 10:50:07 pm
content: Depending on version of android on your phone, you might have a cleaning utility built in ... this would help you jettison old apps, free up storage space on both the internal side or the sd card side. Might also help you determine if the SD card is being seen, or has other issues.If no built-in app, it's easy enough to get one from the play store.Depending on phone, there might be updates to the phone os that "fixes things". If no updates, then there's bound to be an app for that, to help troubleshoot things.Hope this helps ...

author: AndyBeez
author_rank: Frequent Contributor
timestamp: October 10, 2022, 11:08:50 pm
content: For older Android versions, in Settings > Application Manager > Application , there should be a Move  to SD Card button. Be sure the SD card is mounted before migrating. But this functionality varies from OS version to version.https://www.tomsguide.com/us/move-android-apps-to-sd-card,news-21279.html

author: Rick Law
author_rank: Super Contributor
timestamp: October 11, 2022, 07:29:38 pm
content: Since you said "I have an older Android phone. ... ..."Are you sure your phone can use 250GB SD card? My older phones are limited to 32GB SD Card, one less old but old phone is limited to 64GB SD card.Perhaps it was trying to install to SD and it just can't use an SD bigger than X GB?Three tests you can do to find more info:1. Try to make a new file, easy way is to copy a photo taken to the main memory Download folder, if that works (view that copied photo), you know you can create a file at least with the main memory.2. Now try to copy that same photo to your SD card, does it do it?3. You can also just remove the SD card to try installing to main photo's memory. That will take SD size limitation out of the equation.Good Luck...
8 bit atari SIO2PC AspeQt not responding and not sending any data. - Page 1
Forum section: electronics / general

author: Deactivated-1
author_rank: Frequent Contributor
timestamp: October 08, 2022, 07:21:04 pm
content: I'm using an Atari 130XE, with an SP232ACN converter, powering it from the SIO's 5V/Ready pin, I'll attach a circuit diagram of my configuration.I'm using the built in COM port on my MSI motherboard, it's listed as JCOM1, I've set the name of the COM port in device manager to COM4 because COM1 wasn't able to be opened when I was messing with it previously.my baud rate is set to 1x or 19200 in AspeQt's settings, I've also tried using RespeQt, and APE which posted errors that the COM4 port couldn't be configured, while AspeQt and RespeQt had no problems.I'm using CTS for the handshake, I've also tried setting it to NONE and that didn't help.I can play a CAS file from the AspeQt or RespeQt programs and have the atari load them with no problems, but I can't get any ATR files working.I've tried enabling "auto-commit"... whatever that meanswhen I boot the atari, the program recognizes the data on the Command line which is there until the Ready promt appears, and it keeps showing in the log "Set the baud rate to 19200" every time it hears the signal on the CTS line.I've also tried checking "trigger on falling edge" for the CTS signal in AspeQt's settings to no avail.the self-test on the atari shows no problems, although the Select and Help keys on the keyboard are broken, which I just jumpered the pins on the motherboard to navigate trough self test for that.the Start, Option, and Reset keys work with no problem, so I've tried holding down Option, Option-Start, and just Start when booting which didnt change the behavior or the RespeQt/AspeQt programs.When I held the Start key, Basic was disabled and I just had a blue screen with the cursor and no Ready promt, until I pressed return and If I didnt have any data sent trough the SIO, it would show Boot loader error and then enable basic.when I held down Option it would do the same but after a while (about the same time as it would take for Basic to boot) it went into self-test.the Start+Option behavior was the same as just the Start one. but after I pressed return and nothing happened for around a minute, it went into self-test insteadI checked the SP232 pins and everything is fine there, only thing I can't check is the Data Output (pin 5) from the SIO since that never has any data on it as I've checked, it just stays at 5V.And the Data Input (neither the SOUT pin on the PC side not pin 3 on the SIO) didn't have any data on it unless I played a CAS file from the AspeQt/RespeQt programs.The Command pin/CTS had a constant signal on it until the Ready promt appears, it is coming from the SIO to the PC, and is wired as such.I also used Device Monitoring studio to check the data sent trough the COM port and there is none, unless ofc I use the CAS playback features which just sents data to the SIO, and nothing is sent back.I've checked the RS232 cable I'm using and both of the data lines and CTS are connected between both ends.
Solved - Really Strange - Time always lag behind 4 minutes after reboot? - Page 1
Forum section: electronics / general

author: cejoba
author_rank: Regular Contributor
timestamp: October 07, 2022, 11:01:38 am
content: Hi I have a laptop, it's a Chromebook, but running MrChromebox's full UEFI and official Debian.The problem is, no matter what time I set manually, it will always be 4 minutes slower than real world time after a reboot.Anyone have any ideas why/how?

author: ataradov
author_rank: Super Contributor
timestamp: October 07, 2022, 06:36:44 pm
content: I would look into NTP server settings. It is possible that on boot it gets time from some strange NTP server that is off by 4 minutes.Try to boot without any network connectivity and see if this still happens.

author: golden_labels
author_rank: Super Contributor
timestamp: October 07, 2022, 07:27:48 pm
content: When you say “time I set manually”, which clock do you mean? The actual hardware (RTC) clock or the ephemeral system clock? If only the latter, it’s gone as soon as the kernel stops running. Upon boot it is set from the hardware clock. So you must first have a properly set RTC: either in your firmware setup or usinghwclock. Note that it may be in either UTC or your local time: I do not know which is suggested/used by Debian.

author: cejoba
author_rank: Regular Contributor
timestamp: October 08, 2022, 01:24:54 pm
content: Thank you everyone, solved!It's the reason guessed by golden_labels.I actually guessed both possibility before, but never thought Linux would indeed seperate HW RTC from system clock...Documents says it would automatically write system clock to HW RTC when shutting down, but for unknown reason, mine doesn't.

author: Bud
author_rank: Super Contributor
timestamp: October 08, 2022, 02:36:59 pm
content: Try replacing the computer battery, maybe it is marginal.
Windows Dual Boot - Safety - Page 1
Forum section: electronics / general

author: Lindley
author_rank: Regular Contributor
timestamp: October 06, 2022, 11:42:17 am
content: Hi,Have created a dual boot Windows system with W11 and W10, both Home versions.We want to keep the W10 safe and private while using W11 for normal use/surfing etc.Seaching the web seems you cannot Lock out the W10 system using Veracrypt etc, but its suggested that in W11 you go into Disk Management and remove the Drive letter of the W10 system so W11 cannot see the drive, simple enough, but too simple ?However noticed that there are Advanced features where you can Deny access, as in the pic below, which seem to be make it more difficult for anyone to remotely undo , assuming this is a safe thing to do ?Or is there a better way to hide the W10 partition ?

author: coromonadalix
author_rank: Super Contributor
timestamp: October 06, 2022, 02:27:08 pm
content: For this case, you use some "booting software" who can hide partitions once the main selected OS as booted, it will prevent you from messing the other(s) partition(s)In some case you could add a second drive who will never get hidden, you could use it to store and transfert things between your OS'ESThe main problem is : if your working not hidden partition crashes, you may have some problems to recover the other partition(s) it will depend how the multiboot is made and the mbr sectors etc ...The simplest thing for me is to get some hdd hot swap enclosures, i have some with power switches, that way i only powerup the os i need, and have the transfert / storage hdd always powered upI now switch between ZORIN OS and Win10 and or Win11, gotten tired to set multiboot sectors / boot drives .... sometimes an OS tries to get in control and fucked up the other ... and i use VMware or Virtualbox for the oldies like W95, w98 yes i still need thesesOh by the wayWin 10 need i think 4 partitions on the drive to work, not sure if windows 11 is still 4 of 5, this is a normal behaviour of windows

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: October 06, 2022, 02:48:58 pm
content: https://www.makeuseof.com/windows-11-virtual-machine/

author: Ranayna
author_rank: Super Contributor
timestamp: October 06, 2022, 02:49:33 pm
content: Normally, as long as both drives use NTFS, you should not be immediately able to access the files on the "foreign" drive.You might be able to access files that have read permissions set for "Everyone", but you should not be able to access the foreign Users folder.But you can always overwrite the permissions. If you are admin on the system that is currently running, you can always get access to all files on all attached drives.Any malware on your system that manages to achieve admin privileges can wreck the files on any attached drive.Not even encryption helps. The malware will just double encrypt the files.Only disconnecting the unused drive is *really* safe in a dual-boot environment.
bt rx/tx issues - Page 1
Forum section: electronics / general

author: tekguy
author_rank: Contributor
timestamp: October 03, 2022, 02:55:13 pm
content: I have just had this delivered :https://www.aliexpress.com/item/1005002081766025.html?spm=a2g0o.order_list.0.0.21ef1802DHDizk,any idea how i can listen to the transmittedaudio on my galaxy s5 on it?,do i need an app?,i can pair with it but dont know how to play /hear the audio.

author: Foxxz
author_rank: Regular Contributor
timestamp: October 03, 2022, 03:05:37 pm
content: I'm not 100% sure but it looks like this device is made to pair with a bluetooth speaker/headphones and transmit the audio to the speaker via bluetooth with the audio source being from the 3.5mm jack. It can also pair with a phone but only for the purposes of sending audio for phone calls to the bluetooth speaker.If I'm not mistaken it sounds like you want to hear the audio from the 3.5mm jack, via bluetooth, on your phone. I don't think this device will do that.

author: tekguy
author_rank: Contributor
timestamp: October 03, 2022, 04:54:36 pm
content: did you look at the add on aliexpress?,its not how it reads to me.
12V Accu Charger? - Page 1
Forum section: electronics / general

author: Lord of nothing
author_rank: Super Contributor
timestamp: September 30, 2022, 05:29:00 pm
content: HiLong story short I have a device who run with the common 12V and to run them even when the mains Power is down I looking for some HW who allow me to plug the "Device" into the 12V from my Power Supply and the charge an normal Accu and when there is a power out the run from the Accu.Well like an UPS but just for 12V. I dont know where to look for that. Well the must should be "Industrial grade" like in a Case and safe to touch.Thanks

author: Rick Law
author_rank: Super Contributor
timestamp: September 30, 2022, 05:43:44 pm
content: 12 V DC or AC? Amp?If you are doing DC, why not just use an car battery and car battery charger? All those are off the shelf and you can find well made ones. An all-in-one would be the portable car battery jumper/boosters. They typically come with a charger, device plugs, is smaller (than a full size car battery) and more convenient.Do add a fusebecause car battery can pump out a lot of Amps. When mistakes are made, the amount of Amps could cause some very unpleasant things.

author: Lord of nothing
author_rank: Super Contributor
timestamp: September 30, 2022, 06:34:59 pm
content: I guess DC.Are the design to run 24/7 and when the Power work normal the pass them out the normal circuit?

author: bw2341
author_rank: Regular Contributor
timestamp: October 01, 2022, 12:02:52 am
content: How about something like this?https://www.cyberpower.com/global/en/product/overview/telecom_powerhttps://www.cyberpowersystems.com/products/telecom/The USA site seems to have more information.These are Uninterruptible Power Supplies with 12VDC output. The UPS replaces your existing power supply. When the AC mains power is lost, it will switch to the internal battery. In normal operation, it will power your device and charge the battery.The output voltage range specification is approximately 10 to 14 volts so it is probably connecting your device directly to the sealed lead–acid battery during a power outage. Your device would need to tolerate the varying DC voltage.

author: NiHaoMike
author_rank: Super Contributor
timestamp: October 01, 2022, 01:37:52 am
content: Regulated 12V happens to match up with 3S lithium almost exactly. There are lithium batteries with 12V input and output designed just for that use. If you know what you're doing, it can be DIYed out of some 18650s and a 3S BMS.See 15:57 for an example:
Win10 audio volume changes - Page 1
Forum section: electronics / general

author: MikeK
author_rank: Super Contributor
timestamp: October 20, 2022, 04:39:13 pm
content: I recently upgraded to an Dell Optiplex 7020 i5 machine with Win10. I'm using the built-in audio for now. I find that pausing and then playing a YT video in my browser (FireFox) will increase the audio volume noticeably. What is going on?
The alarm killed your hard drive...not the gas - Page 1
Forum section: electronics / general

author: Solares
author_rank: Contributor
timestamp: September 25, 2022, 01:56:02 pm
content: Here is an intriguing article from 3M - fire suppressionTLDR: The Novec (halon replacement) gas emitted when their fire suppression systems are activated does not kill hard disks. But, the press release claims, what does kill them is the sound of the alarm itself.I am very dubious about the claims made in this article. Yes, I've heard of HDDs being killed by excessive physical vibration but never from sources of sound.It would be great to get some other perspectives on this?https://multimedia.3m.com/mws/media/1180481O/clean-agent-system-noise-hard-disk-drive-hdd-failure-faqs.pdf

author: radar_macgyver
author_rank: Frequent Contributor
timestamp: September 25, 2022, 03:35:42 pm
content: https://www.reddit.com/r/videos/comments/41qn3b/shouting_at_disks_causes_latency/

author: themadhippy
author_rank: Super Contributor
timestamp: September 25, 2022, 03:38:31 pm
content: QuoteTry playing jannet jacksons rhythm nation
Turning on a server PSU Delta DPS-1200AB-4 - Page 1
Forum section: electronics / general

author: AmmoJammo
author_rank: Frequent Contributor
timestamp: September 11, 2022, 11:44:19 pm
content: I purchased two of these, have attempted to test one, but failed to get it to turn on.(see attached datasheets) 550w is the same pinout as the 1200w.I have pulled A21 (PSON) low (connected to the negative output?), I have tried connecting A24 (+12VRS) to the positive output and A23 (RETURN_S) to the negative output.I've also tried pulling B29 (A0) low, as I thought that may have been needed to address it as PSU1... but nothing!Ideas?Thanks!

author: coromonadalix
author_rank: Super Contributor
timestamp: September 12, 2022, 11:41:47 pm
content: try at rcgroups ?

author: Mechatrommer
author_rank: Super Contributor
timestamp: September 13, 2022, 06:53:52 am
content: https://www.rcgroups.com/forums/showthread.php?1621433-Delta-DPS-1001AB-1-48V-700w-1000w-Delta-DPS-1500AB-A-Full-Pinoutit seems so simple, just ps_kill and ps_on to gnd.. my $15 each Dell 750W PS-2751-5Q requires soldering resistors.

author: AmmoJammo
author_rank: Frequent Contributor
timestamp: September 22, 2022, 10:27:55 pm
content: Quote from: coromonadalix on September 12, 2022, 11:41:47 pmThere's nothing there.
USB memory stick: no media - Page 1
Forum section: electronics / general

author: PerranOak
author_rank: Frequent Contributor
timestamp: September 14, 2022, 02:44:20 pm
content: I have a USB memory stick that suddenly died.When inserted into the PC, Windows shows it and gives it a drive letter. However, it shows it as zero bytes and when I try to access it it says: no media or that Windows cannot access it.I’ve looked around and mostly get great lists of waffle that are about as useful as “turn it off and on again”. Either that or recommendations to download all sorts of dodgy looking software.Does anyone have a suggestion of some safe software that I could try please?Cheers.

author: janoc
author_rank: Super Contributor
timestamp: September 14, 2022, 04:58:50 pm
content: If the memory stick doesn't let you access the medium, that likely means the flash has died. There is little any kind of "software" can do with that.

author: andy2000
author_rank: Frequent Contributor
timestamp: September 17, 2022, 03:07:22 pm
content: This can happen if the firmware on the flash memory got corrupted. I have revived some by using the formatting software specific to the flash controller chip.I don't recommend it though since it will probably take hours to find the right version that supports both the controller chip and the flash chip. It also assumes the flash chip is still in working condition. Not to mention the risks of downloading software from various shady web sites.

author: PerranOak
author_rank: Frequent Contributor
timestamp: September 18, 2022, 10:31:12 am
content: Thanks both.It's a shame: it's a smart and convenient shape.
Is my USB drive still revive-able? - Page 1
Forum section: electronics / general

author: Logan
author_rank: Frequent Contributor
timestamp: July 11, 2022, 03:14:50 pm
content: Hi, a sad story today.I ejected and unplugged my 32GB HP USB flash drive, then remember something not yet finished, so I plugged it in again, and it not show properly.I found out the port is having bad connection, so I changed it to a good port, and it remain problematic.In gnome-disk-utility, device shows correctly as /dev/sda, but no partition.When try to format it in gnome-disk-utility, an error message says: "Error wiping device: Failed to probe the device 'dev/sda' (udisks-error-quark, 0)"Tried to format it on an Android device with OTG, but the "formatting" screen just shows forever.When trying "dd if=/dev/zero of=/dev/sda", it always stuck after some time, I guess that's the buffer running out and nothing ever written to it.When trying "sudo dmesg | grep sda", here's the related output:[ 975.393443] sd 0:0:0:0:  61440000 512-byte logical blocks: (31.5 GB/29.3 GiB)[ 975.393561] sd 0:0:0:0:  Write Protect is off[ 975.393564] sd 0:0:0:0:  Mode Sense: 43 00 00 00[ 975.393682] sd 0:0:0:0:  Write cache: enabled, read cache: enabled, doesn't support DPO or FUA[ 975.395149] sd 0:0:0:0:  tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s[ 975.395154] sd 0:0:0:0:  tag#0 Sense Key : Not Ready [ 975.395157] sd 0:0:0:0:  tag#0 Add. Sense: Medium not present[ 975.395160] sd 0:0:0:0:  tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 08 00[ 975.395163] blk_update_request: I/O error, dev sda, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0[ 975.395172] Buffer I/O error on dev sda, logical block 0, async page readThe above 6 lines repeat 8 more times (total 9x)[ 975.398753] sd 0:0:0:0:  tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s[ 975.398757] sd 0:0:0:0:  tag#0 Sense Key : Not Ready [ 975.398760] sd 0:0:0:0:  tag#0 Add. Sense: Medium not present[ 975.398762] sd 0:0:0:0:  tag#0 CDB: Read(10) 28 00 00 00 00 18 00 00 08 00[ 975.398763] blk_update_request: I/O error, dev sda, sector 24 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0[ 975.398767] Buffer I/O error on dev sda, logical block 3, async page read[ 975.399256] sda: unable to read partition table[ 975.399934] sd 0:0:0:0:  Attached SCSI removable diskSo, do you think I should try anything more to revive it, or is it completely died?Thank you!

author: Zenith
author_rank: Frequent Contributor
timestamp: July 20, 2022, 09:43:27 am
content: Is there valuable data on it?If so, you could try this. Mac and Windows only, there may be Linux equivalents, I haven't looked.https://recoverit.wondershare.com/flashdrive-recovery/repair-usb-drive-and-recover-data.htmlor there are data recovery companies, but they charge a lot.If it's just a 32GB USB stick that's acting up, they are so cheap it's not worth wasting time on. If you did get it to start to behave, it shouldn't be trusted.

author: Haenk
author_rank: Super Contributor
timestamp: September 01, 2022, 02:39:32 pm
content: I'm a bit late to this, but you might want to try the free "testdisk" tool.
TEG generator at CPU heatsink - Page 1
Forum section: electronics / general

author: msuffidy
author_rank: Frequent Contributor
timestamp: August 19, 2022, 12:33:07 pm
content: Would it help if you could somehow extract TEG power from a cpu at the cooling solution?

author: golden_labels
author_rank: Super Contributor
timestamp: August 19, 2022, 07:15:04 pm
content: The goal of cooling is to minimize temperature difference between the hot and the cold side.TEG requires maximizing temperature difference between the hot and the cold side.Do you see the problem?

author: NiHaoMike
author_rank: Super Contributor
timestamp: August 20, 2022, 01:24:03 pm
content: There was the idea to build datacenters in really cold places to not only save on cooling costs but also to run a heat engine to supply some of the power.
miniCluster automation tools - Page 1
Forum section: electronics / general

author: DiTBho
author_rank: Super Contributor
timestamp: August 19, 2022, 12:25:39 am
content: So, I have two running projects with completely different architectures, one is MIPS32, the other ARM64, different rootfs, different configurations, etc, and you have re-configure the same things ... always the same tasks over and over several nodes.So boring. So annoying.What can solve problems once and then automateAnsibleby RedHat.Found two days ago, tried today, it did the job perfectly
DRAM speed and timings - Page 1
Forum section: electronics / general

author: msuffidy
author_rank: Frequent Contributor
timestamp: August 06, 2022, 04:39:39 am
content: It seems the clock rate on ram keeps going up. Wold it be safe to say though that fundamentally DRAM has always had a basic access rate of around 60ns? So it seems the cas tmiings etc of the dram keeps going up as well as the clock rates, but for some reason faster DRAM is better?

author: magic
author_rank: Super Contributor
timestamp: August 06, 2022, 11:32:52 am
content: It's about deep pipelining. You issue one command, then another, yet another one, and some more, and after your 60ns or whatever the first result arrives, and then the others arrive at a faster rate than with older RAM technology of equal latency.This benefits mainly sequential throughput. Random access, not so much.Besides, your 60ns seems to refer to full row access (RAS)? Reading from the current row (CAS) tends to be no more than 10ns. Again, a difference mainly meaningful for sequential access.
Liquid Flux or Flux Paste for Desoldering Omron Switch?  - Page 1
Forum section: electronics / general

author: Boris_yo
author_rank: Frequent Contributor
timestamp: October 11, 2022, 02:27:16 pm
content: Hello.I ordered ChipQuik liquid flux so I can desolder and replace switch that causes Razer corded mouse to double-click and sometimes multiple-click.But I wonder if flux paste from AE could do the same job for $12 less as long as it desolders joints that hold the switch in place?

author: Helio_Centra
author_rank: Regular Contributor
timestamp: October 11, 2022, 03:32:22 pm
content: whatever flux you have at hand will help. I recall a Big Clive video where he showed showed that you can just use pine tree sap which is what most flux is made of. I'll see if I can find it.

author: Ian.M
author_rank: Super Contributor
timestamp: October 11, 2022, 04:32:41 pm
content: Flux helps with heat transfer by scavenging oxides from the bit and joint surface so solder wets both. However just about any flux that's non-corrosive when cold will do and the difference a $30 bottle of flux makes vs a pinch of finely powdered pine rosin wetted with >95% alcohol is absolutely negligible when desoldering through hole parts.Far Far more important is removing the molten solder quickly and effectively. Too much heat for too long and the pads will come unbonded from the PCB. Also, the switch pins are often very tight in the holes and if its a double-sided board, that vastly increases the risk of pad damage as its all too easy to rip the copper plated lining out of the hole, taking the top-side pad with it. Desolder braid or a pro-grade vacuum desoldering station are your friends here, to clear the holes, then if they have any clearance round the pins, you can check the pins are free by nudging them sideways with a jeweler's screwdriver as they cool to check they haven't re-stuck to the copper lining. If they are snug fits, your options are vey limited: hot air to heat all the pins to solder melting point simultaneously, or break the switch open so you can pull out one pin at a time, or buy ChipQuik low temperature desoldering alloy so you can keep all the joints molten simultaneously with only a soldering iron.

author: MikeK
author_rank: Super Contributor
timestamp: October 11, 2022, 05:43:29 pm
content: If the removed component will be trashed, consider cutting out as much as possible before desoldering, getting it down to individual leads that aren't connected to anything else. Desoldering some components can be tricky without the right tools. If I have to replace, say, an 8-pin IC I'll just snip all the leads at the IC body and desolder each pin separately. Much less chance of damaging the pads from too much heat.
Put that DMCA on the pathetic and ridicoulous list... - Page 1
Forum section: electronics / general

author: PKTKS
author_rank: Super Contributor
timestamp: July 25, 2022, 10:37:59 am
content: SONY alleged points the finger (a lot of fingers) to ITSELF...by infringing their own property.Go figure WTF mess the solely DRM DMCA is by itself..holders can not even position their business inside themselves...https://lumendatabase.org/notices/28075995Paul

author: Halcyon
author_rank: Unknown
timestamp: July 26, 2022, 09:08:26 am
content: Isn't it unlawful to make false DMCA claims?

author: David Hess
author_rank: Super Contributor
timestamp: July 26, 2022, 09:33:55 am
content: It is not unlawful to make a false DMCA claim. What is unlawful is to falsely claim to own or represent the owners of a specific work.

author: bd139
author_rank: Super Contributor
timestamp: July 26, 2022, 09:43:32 am
content: It's all automated these days. Sony hire a third party company to do the DMCA legwork for them. They clearly picked the lowest bidder.The problem is that you're expected to defend your copyright or lose it which is fair enough. The DMCA was supposed to be a way of defending it. Of course human nature managed to to turn this into a complete failure of slop sucking lawyers and then the tech industry damage amplified that with automation.I think lawyers should only be allowed typewriters and no legal secretaries or computers. That'd kill litigious garbage dead overnight.
Apple II Bootup from Reel to Reel Tape - Page 1
Forum section: electronics / general

author: jcrubin
author_rank: Frequent Contributor
timestamp: July 16, 2022, 06:06:26 pm
content: Thought I give it a go turning up the apple II with my reel to reel. A good test for the tape deck with regard to wow and flutter along with a few other baselines that would have to pass to load the software error free.
Thunderbird 102.0 - Page 1
Forum section: electronics / general

author: SiliconWizard
author_rank: Super Contributor
timestamp: July 02, 2022, 08:19:41 pm
content: Just upgraded yesterday. Newsgroups don't work anymore. (The content of posts doesn't get displayed anymore, but TB does connect to the newsgroup server.)Anyone else affected by this? That's the first time in years that I've experienced a problem with TB.

author: SiliconWizard
author_rank: Super Contributor
timestamp: July 08, 2022, 10:09:14 pm
content: OK, it's apparently this:https://bugzilla.mozilla.org/show_bug.cgi?id=1777439Should be fixed in 102.0.2.

author: SiliconWizard
author_rank: Super Contributor
timestamp: July 11, 2022, 09:31:43 pm
content: I can confirm that it's fixed in 102.0.2 that just got released.(Is anybody using TB anymore in here?)

author: JPortici
author_rank: Super Contributor
timestamp: July 12, 2022, 04:04:00 am
content: Me and i hate it everyday. Hate it less than the alternatives

author: Zoli
author_rank: Frequent Contributor
timestamp: July 12, 2022, 05:31:10 am
content: Tbird and Newsbinpro user here.

author: harerod
author_rank: Frequent Contributor
timestamp: July 12, 2022, 10:30:03 am
content: Quote from: SiliconWizard on July 11, 2022, 09:31:43 pmI only use TB while on trips. TB uses IMAP (to keep a backup on the server). In the office the mail system uses POP/SNTP (and dedicated backup system).

author: eugene
author_rank: Frequent Contributor
timestamp: July 12, 2022, 06:24:10 pm
content: Quote from: SiliconWizard on July 11, 2022, 09:31:43 pmI have been using it for years and generally prefer it over other FOSS email clients. Currently, I have a need to access email from an Exchange server, so I'm using Evolution. I prefer TB and would much rather use it, but Exchange email is not a built-in capibility. There are a couple of available addons, but they require periodic subscription payments.Sorry, I don't do paid by subscription software unless absolutely necessary. (A rule that has the side effect of shedding MS Office from my computer. Darn.)

author: SiliconWizard
author_rank: Super Contributor
timestamp: July 12, 2022, 06:34:23 pm
content: Have been using it for years and I can't see what's not to like really. (Except for this recent bug, that admittedly got fixed quickly.) It's fine and the almost only decent, standalone email client out there that is not Outlook.The only thing I find a bit annoying is that despite years of evolution, it still needs some extensions for basic things such as re-ordering accounts and folders, which to me looks like a very basic feature to support. But hey, the extension works...
How would you get Microsoft's attention? Bad firmware bricking Surface Go 1 eMMC - Page 1
Forum section: electronics / general

author: blubillcanada
author_rank: Contributor
timestamp: June 24, 2022, 10:21:23 pm
content: Seems Microsoft has been pushing out a Windows firmware update for the Surface Go series of tablets. This firmware version 1.0.34.0 was released end of May 2022 and is causing many Surface Go 4G 64GB eMMC machines to no longer boot from the internal eMMC with a "No bootable device" error.According to this thread, Microsoft appears to know there is an issue but has done nothing to fix it aside from sending in your device for a replacement for $250.https://answers.microsoft.com/en-us/surface/forum/all/surface-go-uefi-version-is-1034-and-no-bootable/9d1ba573-7929-489d-b31b-1b5912df529bA Reddit threadhttps://www.reddit.com/r/Surface/comments/uzeho9/urgent_notice_surface_go_1_uefi_firmware_10340/And a single articlehttps://www.realmicentral.com/2022/06/22/surface-go-pay-attention-to-firmware-1-0-34-more-than-someone-is-in-serious-trouble/Not sure what it takes to get the wheels greased at Microsoft, but they are "bricking" lots of Surface Go 1 baselines.Any advice would be appreciated. Thank you.Bill from Canada
Recommend a BLE module - Page 1
Forum section: electronics / general

author: RobBarter
author_rank: Regular Contributor
timestamp: August 26, 2020, 03:54:07 pm
content: Can anyone recommend a Bluetooth BLE module that I can easily integrate with a STM32L4 I already have onmy board? So it's doesn't necessarily need to have an embedded CPU just the BLE functionality. However, it would need a software stack available that I can integrate with my own code (HAL based). SPI interface preferred. Also, as small a footprint as possible.

author: CharlieO21
author_rank: Newbie
timestamp: August 26, 2020, 05:46:50 pm
content: I recommend you this module from ST:BlueNRG-M2

author: RobBarter
author_rank: Regular Contributor
timestamp: August 27, 2020, 09:08:28 am
content: Thanks - I was looking at the other ones in the BlueNRG range but that one looks about right. Specifically the BLUENRG-M2SACheers

author: methods
author_rank: Newbie
timestamp: October 23, 2020, 06:56:20 pm
content: I see that you're using the stm32. I've programmed them, but I don't know their ethos very well.On a similar topic, I evaluated a range of arduino's with ble. Specifically all of those offered by adafruit. I found that they all worked amazingly well, and that support from the community was easy to find.On the phone side I've had a lot of luck using MIT app inventor 2, but you have to be really careful with data types. If I had it to do over I would have never tried to work ble with AI2... I would have gone straight to Android studio.... Trouble these days is that everyone wants their phone apps to run on non Android devices. When you get to working with things like NFC, this becomes an issue....So how did your selected ble device work out?I'm currently running an stm32 and I'm seriously considering getting away from it. Right off I found bugs in the compiler around can settings, and I absolutely detest the machine generated paradigm that overwrites my code and does not read back what was previously written.-methods

author: Genx10
author_rank: Newbie
timestamp: June 16, 2022, 06:03:31 pm
content: SimpleBLE module offers everything you need and it is cheap and easy to use. And you can easily integrate it into your project because it doesn't have a platform specific code.