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m0xte commented on Apple (Pro) Mouse (2014)   minimallyminimal.com/blog... · Posted by u/miles
jbverschoor · 6 years ago
omg that was the shittiest thing out there. So many accidental clicks.

Also, the magic mouse with it's horizontal gestures are insane. I don't understand how some people I know like it so much.

Apple trackpads are king :-) And I'd love to have a keyboard+trackpad combination, basically the bottom case of the macbook. Somehow the positioning of a separate keyboard and magic trackpad doesn't quite work.

m0xte · 6 years ago
Yeah I bought a Magic Mouse 2 earlier this year and regretted it instantly. Apple need to stop thinking outside of the box when it comes to mice.

You’re right about the positioning as well. If you have a full size Apple keyboard the trackpad is too far away always. If you have the compact layout Apple keyboard it’s too much of a compromise with keys.

Best outcome for me was turfing the lot and the Mac and getting a Logitech mouse and a TKL layout cherry MX red based keyboard. So much better.

I’m sorry but the Apple input devices are inferior even to the lowest grade no brand stuff from Aliexpress at this point.

m0xte commented on Jedi: We will continue to protest this politically corrupted contract award   aws.amazon.com/blogs/publ... · Posted by u/ENOTTY
mark_l_watson · 6 years ago
When I was young I worked in the defense industry. If I remember correctly, pushing back hard when not winning a contract was not done. I can’t imagine how much this would sour future contracts and future negotiations.

I admit a little bias since I preferred Microsoft winning this contract. I am a very happy Amazon and Google customer, but as a taxpayer I felt better about Microsoft winning this. This is just an opinion that admittedly is not based on any expertise in government procurement of cloud services.

m0xte · 6 years ago
Yes. Similar experiences. Basically the position I ended up in was mandatorily selling out to Oracle with no other choice on the table. The key purchasing decision was whether Sun or HP got to bugger us for hardware. This was loudly shouted out to drown out the “why do we need oracle” question. This took months of noise and pretendering (pretend tendering) and all sorts of meetings where no one knew anything about anything that was being required. But everyone was doing Six Sigma of course do the cargo culting was justified by process. Eventually HP was pulled out of the hat because someone saw a nice shiny sales brochure.

In the end, £1m down the shitter, 9 web pages written in JSP backed with a full 42U rack HP/UX crate running oracle was seen as a success. The whole platform was scrap in three years. each http request made cost £83 in the end ($100ish).

And that’s defence spending in a nutshell.

No one says a thing to stop this happening.

m0xte commented on Jedi: We will continue to protest this politically corrupted contract award   aws.amazon.com/blogs/publ... · Posted by u/ENOTTY
m0xte · 6 years ago
This is the thinly veiled next round of Trump vs Bezos by the sounds.

Hint: There are no winners.

m0xte commented on iPhone audio detectable with AM radio   twitter.com/doctorcube/st... · Posted by u/kimburgess
murgindrag · 6 years ago
Interesting. I've never done defense. What was it like?

In the real world (non-defense), I did this once in my life. We went to and independent testing laboratory (actually the premier / highest-regarded one) with our device. They put it outside, pointed a big antenna at it, and it didn't pass. We made some random changes (adding shielding of some kind somewhere; the lab had it on-hand). Things ... changed. Sometimes they got better. Sometimes they got worse. We didn't know whether we were changing, or simply the radiation patterns to better match the test setup.

We kept making tweaks like that until it passed, and that was our final, independently lab-certified product design.

If we had tested at a slightly different angle, I'm pretty sure we would not have passed. Or in a different lab. It was deep voodoo. From what the lab guys said, EMC testing almost always looks like that.

I believed them. We can't really solve Maxwell's Equations in our head, and we know so little about antenna design that predicting the radiation from a complex device is not really possible. You just tweak, adding a gasket here or ferrite bead or whatever, and pray it works. Most of the small tweaks we did at the lab, but I do recall we did some larger design change (making a signal differential or something) which necessitated going to the lab a second time with a device with a new PCB.

m0xte · 6 years ago
That’s about it for commercial stuff. The trick is really managing it pre-compliance which amounts to renting a signal analyser / SA / measurement receiver and going at it with a near field probe to avoid having to pay for it more than once. Rigol do some adequate kit for less than your mugging from a leasing company now. As for the lab guys they don’t have a tight loop with the design engineers when you are going for compliance testing.

We used stuff in defence sector I can’t talk about even today past saying they have specially designed facilities that rival the commercial sector and fairly capable high end 3D field mapping equipment that cost more than my house did. It was based on commercial kit from Agilent with their own software and hardware.

As for antennas, they’re not really that voodoo. I’ve built quite a few even up to 2.4GHz. I played with 10GHz as well but not successfully yet. Same for radiation. PCB traces are antennas and transmission lines. Impedance control is fun IMHO.

There are design patterns and crib sheets at most large companies that avoid such pitfalls though. Spinning another board is expensive so avoiding this sort of stuff is where your design engineers should be leveraged. Some stuff is indeed tweaking but that’s getting less these days with some of the CAD software around. But it costs real money.

m0xte commented on iPhone audio detectable with AM radio   twitter.com/doctorcube/st... · Posted by u/kimburgess
murgindrag · 6 years ago
You've clearly never done EMC testing, if you think there's no opinion involved in such matters.

You might as well say "It's software engineering. There's no opinion involved..."

m0xte · 6 years ago
I have, in defence sector.
m0xte commented on iPhone audio detectable with AM radio   twitter.com/doctorcube/st... · Posted by u/kimburgess
sgt · 6 years ago
Just a few meters, as per the article. I'm guessing if you can't hear it on the iPhone's speaker, it won't be audible on AM radio either.
m0xte · 6 years ago
Correct. Although it’s possible on older handsets with 3.5 jack that the audio amplifier in the handset itself is possible to receive. I’m not sure about lightning.

But I very much doubt at the stated range. The EMC guys would be all over that.

m0xte commented on iPhone audio detectable with AM radio   twitter.com/doctorcube/st... · Posted by u/kimburgess
ponker · 6 years ago
Why would you assume that his experiences and yours are the same?
m0xte · 6 years ago
It’s physics. There is EMC testing done on these devices. There is little opinion involved in such matters.
m0xte commented on iPhone audio detectable with AM radio   twitter.com/doctorcube/st... · Posted by u/kimburgess
phlhar · 6 years ago
In a later tweet he says the signal is pretty strong and that he could detect it from 6 feet away
m0xte · 6 years ago
I doubt it. That probably wouldn’t pass the EMC testing. Exaggerating I suspect to back up the claim.

Really why is this a surprise when you can hear the phone blips and buzzes from the RF induced pickup on shitty hifi equipment.

m0xte commented on iPhone audio detectable with AM radio   twitter.com/doctorcube/st... · Posted by u/kimburgess
eptcyka · 6 years ago
If you are disregarding that detail of the story, why not dismiss the author outright?
m0xte · 6 years ago
I am disregarding the whole thing. The author knows nothing of EMC. This is expected at close quarters.
m0xte commented on iPhone audio detectable with AM radio   twitter.com/doctorcube/st... · Posted by u/kimburgess
erk__ · 6 years ago
He says in one of the comments that he was able to get a signal you could hear from around 20 feet away.
m0xte · 6 years ago
I suspect that’s unlikely from my own experiences on this stuff. Perhaps 20-40cm is more likely.

u/m0xte

KarmaCake day1328July 5, 2019View Original