@philpem@digipres.club
@philpem@digipres.club avatar

philpem

@philpem@digipres.club

Software preservation, electronics, software and ham radio - a maker of things!

Pronouns: https://pronoun.is/he/him

Website: https://www.philpem.me.uk

Current projects:
LF radio navigation - #Datatrak
DIY cable TV headend - #AnalogCable
#HackTV (TV signal generator for SDRs) - video scrambling modes
Acorn/ software preservation (#DigiPres)

Tags: #electronics #HamRadio #Machining #Metalworking #RetroComputing #HardwareHacking #ReverseEngineering #ICRE #Maker #DigiPres

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twll, to random
@twll@mas.to avatar

What’s this? An email from Microsoft? My Microsoft 365 subscription lapses at the end of May? And I should turn on recurring billing to have access to the latest AI-powered tools?

AI-powered tools, you say?

Nah, I don’t think you need encouraging down this path any more, Microsoft.

philpem,
@philpem@digipres.club avatar

@twll Artificial insanity, but I have enough of that myself!

philpem, to RaspberryPi
@philpem@digipres.club avatar

Tonight on "what the frisk?", a Raspberry Pi device tree overlay that works fine on 32-bit Pi OS, but on a 64-bit Pi Zero 2W it kills the WiFi. I have no idea where to even start figuring this out.

philpem,
@philpem@digipres.club avatar

@penguin42 IRQ might be a possibility. It mostly declares ownership of some GPIOs, and configures some of the PWMs to generate clocks:
https://github.com/cr12925/PiEconetBridge/blob/v2.1-pre/dts/econet-gpio-v2.dts

philpem,
@philpem@digipres.club avatar

@gadgetoid It assigns a bunch of GPIOs to a driver module (econet-gpib) and sets up some clocks and PWMs: https://github.com/cr12925/PiEconetBridge/blob/v2.1-pre/dts/econet-gpio-v2.dts

Weirdly it's fine on 32bit but breaks on 64bit

philpem,
@philpem@digipres.club avatar

@penguin42 SDIO, apparently.

philpem, to random
@philpem@digipres.club avatar

I'm doing a talk on DIY cable TV at @emf next weekend, if you're into #AnalogCable TV please feel free to pop by, or find me in the ECHQ (EMF Hams) village :)
https://www.emfcamp.org/schedule/2024/203-being-elliot-carver #EMFcamp

philpem,
@philpem@digipres.club avatar

@DeltaWye @emf I don't think it'll be streamed but I've asked the EMF video team to record it, and I'll be releasing the slide deck after the talk.

woodpunk, to retrocomputing
@woodpunk@mastodon.online avatar

Check out this #retrocomputing behemoth!

I ate the banana to give me enough energy to lift this #vintage #PC down from the workbench, so CD case for scale.

philpem,
@philpem@digipres.club avatar

@woodpunk That's a beauty! I'd love to know who made these cases - a family member had the midi-tower version back in the day, and I always liked the aesthetic.

philpem, to random
@philpem@digipres.club avatar

Well it's eleven o'clock on a Saturday,
The regular crowd's sneaking in.
There's a young man sittin' next to me
Makin' love to his Club-Mate drink
He says "Son, can you find me a zero-day?"
"I'm not really sure how it goes."
"But it's easy, a treat, and I knew it complete"
"Before it was called 'out of scope'."

OrionKidder, to linux
@OrionKidder@mas.to avatar

I keep seeing ads for suped-up laptops for #Linux, and that's great and all--I know a lot of people are really into just how damn fast they can download an update--but I'm way more interested in, "I got my MacBook 2007 to be perfectly serviceable with #DebianLight or whatever." I want to breathe life into an old piece of shit, not acquire yet another piece of tech I'll have to recycle someday.

philpem,
@philpem@digipres.club avatar

@OrionKidder Literally me with all my old Thinkpads.

gsuberland, to random
@gsuberland@chaos.social avatar

today is "attempt to bring up the CO2 sensor boards" day.

I am remarkably nervous about this.

philpem,
@philpem@digipres.club avatar

@gsuberland @whitequark I kinda want to pick one up and tear it down to see how awful it is. I'm expecting a tiny PCB with no filtering and no optocoupler feedback regulation.

kiwa, to random
@kiwa@bitbang.social avatar

Photo from 2022

philpem,
@philpem@digipres.club avatar

@kiwa oh look, it's the scoreboard at the Econet Lan Party last weekend :D
(someone wrote a scoreposter that sent the lyrics with a really low score, then increased the score to make them bubble up the scoreboard XD )

renbymon, to random
@renbymon@computerfairi.es avatar

Just an FYI, if you get a message like this from someone on discord then it’s a scam.

I just got this and it set off alarm bells; why would discord ask someone to message me instead of messaging me directly?

A few minutes of googling and I confirmed that 1) discord does not deal with violations in this way and 2) that it’s a scam to steal your account and likely some money too.

This is how discord deals with violations: https://support.discord.com/hc/en-us/articles/18210965981847-Discord-Warning-System

A fake email from Discord, text below. Your request 44328892 has been updated, see response below. Discord is focused on maintaining a safe and secure environment for our community. We've found your account to be in violation of our Terms of Service & Community Guidelines that has involved a number of users. As a result, we've decided to have this investigated first to accurately conclude this case. To start the investigation, we highly suggest you to inform the users included on the report charges made, since they will not be notified about this incident due to the "Report Type" made. Once they are notified, have them reach out to the assigned moderator (lan Chan) to properly assess this incident's finalization. • Assigned Moderator's Username - ianchan.srt| • Remember that this incident must only be taken and investigated inside Discord to avoid further leak of private information or details. • Investigation procedure are being monitored by state's "Federal Law Team" to assure every requested & provided information does not violate state law. • A (12-hr) timeframe has been stated on this case, if actions are not attempted, Discord program will auto lock your account with the banning of IP Address. • Pay attention to every step taken to avoid confusions, error and etc. Sincerely, Discord Trust and Safety

philpem,
@philpem@digipres.club avatar

@renbymon That one's been going by for a while, but the fake Discord letter is a new one.

I can see a few scam hallmarks there, though -- these turn up often:
"This must only be investigated by us", ie. don't tell anyone.
"State's federal law team" to give it an air of officialdom
"12-hr timeframe" - to try and get you to rush through without thinking
And finally, the crap English and misuse of long words!

The first two are to try and stop the victim from finding out it's a scam.

philpem, to random
@philpem@digipres.club avatar

In case you missed it, I've got a spiffy new logo for my slides and PCBs. This is Chaos the dragon!
https://meemu.org/@quesadillawizard/112493013282894564

philpem,
@philpem@digipres.club avatar

And here's what he looks like on my #EMFcamp talk slides :)

philpem,
@philpem@digipres.club avatar

@foone If you do, I need one too! :D

gsuberland, to random
@gsuberland@chaos.social avatar

JLC order arrived! 🎉

philpem,
@philpem@digipres.club avatar

@gsuberland Nice board :) I like the rail state indicator LEDs.
I'm always impressed that an open-air event has CO2 and AQI monitoring with a shiny front-end, while indoor events I've talked to handwave it as "pointless"!

philpem, to random
@philpem@digipres.club avatar

I really need to break out of my habit of bodging stuff together out of whatever cheap Sparkfun- and Adafruit-style protoboards I can find. My old job put me off doing electronic design for a while and I'd like to get back in the groove.

philpem,
@philpem@digipres.club avatar

@growlph @RavenLuni I found them too expensive initially, sad to hear the QC has gone to pudding too. I too buy a lot of the Chinese-made demo boards. "For some reason" there are quite a few Waveshare ones in my "random modules" box, but also tons of unbranded level shifters.

philpem, to random
@philpem@digipres.club avatar

Omniscient PKI party: when your "rsync the public verification keys to webserver:/public" script pushes the private keys too.
#JustTechThings

DeltaWye, to random
@DeltaWye@mstdn.social avatar

🤖 “Your laptop has cleared customs out of the FedEx center in Anchorage, Alaska.”
😊 “That’s good!”
🤖 “It is now in transit.”
😊 “That’s good!”
🤖 “It will be routed through the FedEx distribution center in Memphis, Tennessee.”
😑 “That’s bad.”

philpem,
@philpem@digipres.club avatar

@inari @DeltaWye Could be worse. Could be Yodel or Whistl. Want your package? Whistle for it!

LaF0rge, to random
@LaF0rge@chaos.social avatar

CompilerFax: Sending C source code via telefax to a compiler-as-a-service which then faxes you the output of your program; demo: https://www.youtube.com/watch?v=pJ-25-pRhpY git: https://github.com/lexbailey/compilerfax intended for

philpem,
@philpem@digipres.club avatar

@LaF0rge I'm not going to try it on a public instance, but I'm definitely wondering how it'd handle a fork-bomb or a connect-back shell...!

hairymnstr, to random
@hairymnstr@mastodon.social avatar

Coming to #emfcamp ? Got an idea for a badge app? Want to share it with your friends, but not just via some web store? Well then I have the solution for you! The Flopagon™ is a handy 16MB store for all your favourite Tildagon programs. Fully hexpansion compliant!* These will be available for £3 each to cover costs or may be tradable for other hexpansions. (*UHB-IF compliance subject to further needless bureaucracy) @badge

philpem,
@philpem@digipres.club avatar

@hairymnstr Wow! I need one of these for my Tildagon. Will you be selling them at the night market?

RaphaelWimmer, to random
@RaphaelWimmer@hci.social avatar

Hmm, just noticed that info.gigaset.net is no longer resolving. It was the backend for some services provided by Germany's last manufacturer of #DECT and mobile phones, #Gigaset, to users of its IP phones. Gigaset had gone bankrupt last year and was bought by #VTech earlier this year.
They have recently fired a quarter of employees.

I guess, they are more interested in Gigaset's manufacturing capabilities in Europe than the phone business.

philpem,
@philpem@digipres.club avatar

@RaphaelWimmer Hmm, I hadn't heard about their bankruptcy. I did wonder why the info service had suddenly stopped working on my Gigaset IP-DECT setup though. What a shame I didn't sniff some of the HTML before it went down!

philpem,
@philpem@digipres.club avatar

@RaphaelWimmer Thanks for that. I found that the info.Gigaset.net server is still up at 81.173.115.217 - so adding a hosts entry will get it working again.
There's also some Gigaset documentation on the feature - they call it either RAP or XHTML-GP:
https://www.gigaset.com/en_en/cms/home/support/support/gigasetnet/my-apps-developer-toolkit.html
https://teamwork.gigaset.com/gigawiki/pages/viewpage.action?pageId=719192307

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