@acsawdey@fosstodon.org
@acsawdey@fosstodon.org avatar

acsawdey

@acsawdey@fosstodon.org

Ph.D. EE, gcc developer, cache protocol hacker (IBM power), space geek, alldogmn.org dog foster, LeechLakeLegacy.org board member, photographer, he/him (@sawdey over at the other place)

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MLE_online, to random
@MLE_online@social.afront.org avatar

The IEB parked next to another trashy ebike. Also notice that a frozen pizza fits perfectly in the baskets I welded up

acsawdey,
@acsawdey@fosstodon.org avatar

@MLE_online That whole project came together so well .. anyone thinking of stealing it must also wonder if they should call the bomb squad instead. Love those giant baskets. Back in the day, newspaperboy baskets were tapered, which worked well for rolled papers. But I think the straight sides look more amenable to general cargo use.

ai6yr, to Dogs
@ai6yr@m.ai6yr.org avatar

If you need an arm workout, here's what I've found is the best formula... #WORKOUTTIPS

Curls? No.
Weights? No.
Regular gym visits? No.

Place an 85 lb dog (with major pull power -- Husky, Pittie, Bulldog, etc.) on a long 8 to 10 ft leash on a harness.

Find where the squirrels in your neighborhood hang out.

HANG ON FOR DEAR LIFE!!! PULL LIKE YOU HAVE NEVER PULLED BEFORE!!!! (ps. make sure you don't get leash burn... dislocate a finger... or get pulled face first as they drag you down the street/trail. Or through the bushes).

🤪 #dogs

acsawdey,
@acsawdey@fosstodon.org avatar

@ai6yr Arm day partner: Cody. Great Pyrenees/Great Dane mix. 125 lbs. Obsessed with squirrels 😂

MLE_online, to random
@MLE_online@social.afront.org avatar

Who really needs a bike with this many speeds? By the time you add a front derailleur, that's 24 or 36 speeds! Dumb!

acsawdey,
@acsawdey@fosstodon.org avatar

@MLE_online I think those 3-speed hubs you've been messing with are very underrated. If the ratios are well chosen, it's enough for a utility bike, and it's sealed from the mud & weather, and there's no reason a planetary gear transmission can't be sturdy (lenco 2-speed building block for drag cars is surprisingly small and handles OMG horsepower levels).

Plus you have going on 100 years of different planetary transmission architectures to copy if you want more speeds.

MLE_online, to random
@MLE_online@social.afront.org avatar

A contraption is coming into existence

acsawdey,
@acsawdey@fosstodon.org avatar

@MLE_online There are some amazing building blocks you can find on amazon/aliexpress that enable all kinds of cool little widgits/controls/monitors ...

acsawdey,
@acsawdey@fosstodon.org avatar

@MLE_online Case in point, control box for the “Big Fan” as we call it. A blower from a scrapped furnace. All it actually needed was a box for the rotary switch. But no, I saw this power measurement module and had to add that 😂

image/jpeg

North, to random
@North@chaos.social avatar

The argument against nuclear power is ridiculous on a planet with this many nuclear weapons. We have a loaded gun pointed at our heads 24/7 and we can't use it to scratch behind our ear?

acsawdey,
@acsawdey@fosstodon.org avatar

@North @MLE_online I think radioactive waste & nuclear accidents are the things pointed at nuclear power ... so instead we spent the 1970-1980's building coal fired power plants and doing huge environmental damage 🤷🏻‍♂️

Migueldeicaza, to random
@Migueldeicaza@mastodon.social avatar

Beowulf cluster of iPad Pros.

acsawdey,
@acsawdey@fosstodon.org avatar

@Migueldeicaza @pixel Built-in UPS at each node 😁

Nonilex, to anime_titties
@Nonilex@masto.ai avatar

WTAF?

Exclusive: #Trump #ForeignPolicy advisers met Israeli PM #Netanyahu

3 fmr #UnitedStates foreign policy ofcls in Trump's admin met w/ Benjamin Netanyahu & other public figures in #Israel on Mon….

The delegation was comprised of Robert O'Brien, who served as Trump's 4th & final #NationalSecurity adviser, as well as fmr Ambassador to the #UAE John Rakolta & fmr Ambassador to #Switzerland Ed McMullen….

#geopolitics #Gaza
https://www.reuters.com/world/us/donald-trump-foreign-policy-advisers-met-israeli-pm-netanyahu-source-says-2024-05-20/

acsawdey,
@acsawdey@fosstodon.org avatar

@Nonilex something something Logan Act something something ...

whitequark, to random
@whitequark@mastodon.social avatar

i think i have five copies of clang right now in ~/Projects/yowasp, not counting the LLVM tree that i'm building

acsawdey,
@acsawdey@fosstodon.org avatar

@whitequark Maybe a bigger CPU cooler too .. 100C 😮

Are you hitting any thermal throttling?

thomasfuchs, (edited ) to retrocomputing
@thomasfuchs@hachyderm.io avatar

What's your favorite mobile #retrocomputing form factor?

Reply has an example for each category.

(Please reply why!)

acsawdey,
@acsawdey@fosstodon.org avatar

@thomasfuchs I've got a soft spot in my heart for the Kaypro II, IV, and 10 ...

acsawdey,
@acsawdey@fosstodon.org avatar

@thomasfuchs The Kaypro II was the first computer I ever overclocked ... turns out that a 2MHz z80 isn't enough to keep up with a 130wpm keyboarder (not me 😂) ... though the code in Wordstar coped pretty well. It would stop updating the screen and just print ! characters and keep buffering the input. Then she'd stop typing and it would take a good 60 seconds to unload the input buffer and get back to normal. Same person regularly wore out 80's mechanical keyboards, which takes some doing.

MLE_online, to random
@MLE_online@social.afront.org avatar

I had a pretty amazing score of tools today.

Last weekend at set build, one of the other volunteers was admiring my homemade tool battery. Today you came up to me and told me that someone had his condos was getting rid of a bunch of tools because they didn't have a battery. He asked if I wanted to have them to see if I could build a battery for them like I did for my drill.

I said yes, not really expecting anything good, but he walked me out to his car and handed me a big bag of tools, all of which use the exact same type of battery used by my drill and my impact driver that I dug out of the trash a few weeks ago.

He gave me a cordless sawzall, a drill, a flashlight / lantern, and another battery charger. A whole suite of these tools now!

First thing I'm going to do is convert the incandescent flashlight/lantern to LED

acsawdey,
@acsawdey@fosstodon.org avatar

@MLE_online @morgan Could replace the guts of the charger with li-ion chargers, just use the case and battery connectors?

mattblaze, (edited ) to photography
@mattblaze@federate.social avatar

Commuter Trains, Ewing (West Trenton), NJ, 2010.

All the pixels at https://www.flickr.com/photos/mattblaze/4377309058

acsawdey,
@acsawdey@fosstodon.org avatar

@mattblaze you’re making me think of this air show photographer and his crazy rig. Of course even that’s only 800mm.

https://petapixel.com/2017/06/07/photographer-captures-air-show-nikon-800mm-crazy-shoulder-rig/

acsawdey,
@acsawdey@fosstodon.org avatar

@mjf_pro @mattblaze Yeah pretty much .. I think the block down by the wheels is actually a gel cell lead acid battery which functions as a counterweight to balance it and provides power for the camera.

MLE_online, to random
@MLE_online@social.afront.org avatar

Lettuce is such a weird looking cat, so my sister and I were trying to figure out what exactly makes her look so odd.

It's definitely something with her eyes, but also her ears point straight up too much.

acsawdey,
@acsawdey@fosstodon.org avatar

@MLE_online It seems like her ears are disproportionately large compared to "average" cats, they are more along the axis toward fennec fox or corgi ears.

One of my jobs at with a rescue I work with is to take pictures of all the surrendered animals so the placement person has something to work with. Anyway, I have a lot of pictures of cats. It seems to me you can sort of draw a line from the point between the eyes to the tip of the ear, and see where the outline of the skull intersects.

niconiconi, to random

"too large for casual users to have downloaded [...] even using 56k modems"

LMAO ​:blobcatlul:​

acsawdey,
@acsawdey@fosstodon.org avatar

@niconiconi thinking of all the times I downloaded something that took a large fraction of a day … I don’t think having a separate line for your modem was all that atypical.

acsawdey,
@acsawdey@fosstodon.org avatar

@azonenberg @niconiconi definitely a perk when I became a grad student however I don’t recall cd-r being a generally available thing until a bit later (late 1990s?). Usually floppies, a portable hd, of Zip disk …

azonenberg, to random
@azonenberg@ioc.exchange avatar

First time plastic welding since shop class at RPI in like 2011.

Definitely not my prettiest work but it looks like it'll hold, and should be way better than the epoxy I used before (this is polypropylene so annoyingly low surface energy for adhesives).

Cheap hot air rework station on the floor next to a plastic axle in a clamp
Inside of the shopping cart frame showing a couple of not-that-pretty weld beads
Outside of the cart showing more ugly weld beads

acsawdey,
@acsawdey@fosstodon.org avatar

@azonenberg @ignaloidas The “hot staple” tool for fixing plastic bumper covers would be another thing to try. Basically you melt a w-shaped staple (heated by resistance) into the plastic across the break, then use a flush cutter to trim the wire ends sticking out.

niconiconi, to random

time to rebrand bit-sliced CPUs as "Single Data Multiple Instructions"

acsawdey,
@acsawdey@fosstodon.org avatar

@niconiconi 🤣 🤣 🤣

Isn't that also microcoded CPUs?

SPMD was always my favorite ...

geekmomprojects, to random
@geekmomprojects@mastodon.social avatar

We adopted a super sweet 8 month old pup from a shelter two weeks ago and were convinced he was a Rottie-Shepherd mix. Just got the DNA results back, and, through his genes are primarily "mutt," the rest of the results have us going 😳

Photo of an adorable 8 month old pup with a Labrador build and German Shepherd markings laying down looking into the camera
DNA results for our dog Riley that reveal his genetic percentages as: 100% Riley 33.4% Supermutt 28.9% Australian Cattle Dog 12.9% Border Collie 11% Labrador Retriever 5.4% American Pit Bull Terrier 4.3% McNab 4.1% German Shepherd Dog

acsawdey,
@acsawdey@fosstodon.org avatar

@geekmomprojects Wow, that's a lot of supermutt.

Our current record is this one, who was billed as "Pyrenees and hunting dog" 😂

The old adage in rescue was "Labs have more fun" but now I'm leaning toward "Cattle dogs get around" ...

acsawdey,
@acsawdey@fosstodon.org avatar

@geekmomprojects Also -- there is a place where embark lists some breeds for your dog that they grouped into "supermutt" -- for Snowball it was Blue tick coonhound, beagle, Komondor, and Cocker Spaniel.

She is a big marshmallow puff-ball, she got the coat from pyrenees + "American eskimo".

Your guy is going to keep you busy with cattle dog + border collie, better figure out a job to give him!

gsuberland, to random
@gsuberland@chaos.social avatar

if you're a student working on semiconductor materials stuff, I posit that one of the most practically attainable nobel prizes out there is solving the green gap problem in LEDs. find just the right approach with just the right dopants and you're a shoe-in for the prize, not to mention the global energy efficiency and health impact it'll have.

acsawdey,
@acsawdey@fosstodon.org avatar

@gsuberland So the "green gap" is that there are gaps on either side of the two green wavelengths?

acsawdey,
@acsawdey@fosstodon.org avatar

@gsuberland so you are suggesting if we had something in that yellow-green range that was high efficiency, we could drive phosphors with that, and any of that light that escapes the phosphor is actually in a helpful range unlike the blue. Opens the door to cheaper more efficient high-CRI LED lighting?

azonenberg, to random
@azonenberg@ioc.exchange avatar

New thread on my big ongoing embedded project since the other one was getting too big.

To recap, this is a pilot project for a bunch of my future open hardware T&M and networking projects, validating a common platform that a lot of the future stuff is going to run on.

The primary problem it's trying to address is that I have a lot of instrumentation with trigger in/out ports, sometimes at different voltage levels, and I don't always have the same instrument sourcing the trigger every time.

So rather than moving around cables all the time and adding splitters, attenuators, amplifiers, etc. to the trigger signals I decided to make a dedicated device using an old XC7K70T-2FBG484 I had lying around.

Of course, as with any project, there was feature creep.

I'm standardizing on +48V DC for powering all of my future projects as it's high enough to move a lot of power but low enough to be mostly safe to work around live. So I needed to design and validate an intermediate bus converter to bring the 48 down to something like 12 for the rest of the system to use.

The FPGA has four 10G transceiver pairs on it. I used one for 10GbE (not that I need the bandwidth, but I was low on RJ45 ports on this bench and had some free SFP drops) and the rest are hooked up to front panel SMA ports (awaiting cables to go from PCB to panel) to generate PRBSes for instrument deskew.

Since I'm pinning out the transceivers and am planning to build a BERT eventually, I added BERT functionality to the firmware as well (still need to finish a few things but it's mostly usable now).

And since I have transceivers and access to all of the scope triggers, it would be dumb not to build a CDR trigger mode as well. That's in progress.

acsawdey,
@acsawdey@fosstodon.org avatar

@azonenberg Wow, what is that, fluidics? 😉

It looks nice but I can well imagine it was a nightmare getting all that stuff bent and lined up so it connects. Especially if you had to deal with extra length …

acsawdey,
@acsawdey@fosstodon.org avatar

@azonenberg oh yikes so the termination for the back panel had to be done first and also had to mount on the outside through the panel? Yeah I could see that would make getting the last few in place progressively more difficult.

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