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Uhrheber

399 karma · joined September 4, 2017

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Uhrheber··on We're making an open-source $30 GPS/mesh radio, would like advice
I can see why you're using these boards, but the ESP32 is an incredibly power hungry device. For battery/solar power it's not the best choice.

For devices in the field I'd use one of the many available low power ARM controllers.

Uhrheber··on Amish Counter Top Kitchen Appliances Run Off Compressed Air (2012)
Someone should tell them, that their bodies are running on electricity...
Uhrheber··on LoCHAid – An ultra-low-cost, affordable and accessible hearing aid device
That's actually not a bad idea, a lot of people already have headphones with integrated microphones and processors.

Noise cancellation headphones could be easily transformed into hearing aids with a change of the firmware. In fact, they could be excellent hearing aids, because they probably have more computing power than the average professional hearing aid.

Uhrheber··on LoCHAid – An ultra-low-cost, affordable and accessible hearing aid device
*user
Uhrheber··on LoCHAid – An ultra-low-cost, affordable and accessible hearing aid device
This is basically how the first transistorized hearing aids in the 60s worked.

Zero innovation, and an implementation that wastes lots of power. Why would you use a volume potentiometer at the OUTPUT of the amplifier? It turns most of the output power into heat. And why would you use a stereo amplifier and short the two channels together to get a mono amplifier?

You can already buy (in ear) hearing aids for less than $3 from China. A little bit more money even gets you rechargeable ones.

Also: Even in developing countries, more and more people have smartphones. In fact it might be easier to get a smartphone there than a professional hearing aid. There are apps that act as a hearing aid, taking the sound from the microphone, amplifying and filtering it, and sending it to the headphone output. Unlike with this project, the use can individually adjust the frequency response to his hearing.

Uhrheber··on Unencrypted patient medical information is being broadcast across Vancouver
> Nobody‘s gonna put up an antenna over years collecting all this noisy stuff

What do you think all the antennas on embassy buildings are for?

Uhrheber··on Unencrypted patient medical information is being broadcast across Vancouver
"didn’t seem to rely on any radio connection"

What did they think it relies on? Fairy dust?

Uhrheber··on Harvard Student Says He Was Barred From U.S. Over Friends’ Social Media Posts
Obviously, the US of A don't want any visitors anymore.

Duly noted.

Uhrheber··on Credit cards have a privacy problem
Says the pot to the kettle.
Uhrheber··on Surveillance cameras in Pennsylvania use hackable Chinese tech
Which means that they violate their visitor's privacy, and don't want to stop it.

Funny, that such a site reports about other's privacy violations.

Uhrheber··on Major breach found in biometrics system used by banks, police and defence firms
Quick! Change your fingerprints and your face!
Uhrheber··on Microsoft finds privilege escalation vulnerability in Huawei driver
Mcrosoft! Finding a privilege Escalation! In someone else's software!

The world is turned upside down.

Uhrheber··on FindChips – Get instant insight into any electronic component
Same here. As always, you're paying with your privacy.
Uhrheber··on Notion – All-in-one workspace for notes, tasks, wikis, and databases
Why would I put my most important data on someone else's computer?
Uhrheber··on China’s Nreal raises $15M to shrink augmented headsets to size of sunglasses
I can't see anything else but photos of ugly sunglasses and a lot of marketing BS.

No photos or videos of what the display actually shows.

Uhrheber··on Malicious sites abuse 11-year-old Firefox bug that Mozilla failed to fix
Why does nobody target the root cause?

The possibility to show popups and popovers in browsers should be removed completely. There are little to no legit uses for them. Even reputable websites use them only to nag and annoy their users.

And don't get me started about Javascript. This is a plague, that causes more problems than it solves.

Uhrheber··on BleedingBit: The hidden attack surface within BLE chips [pdf]
Why do bugs nowadays have to have a name and a website?

Are they security researchers or posers?

Uhrheber··on China ‘Is the Only One in the Race’ to Make Electric Buses, Taxis and Trucks
I'm glad they do.

I always thought, when 1 Billion Chinese will start to drive cars instead of bicycles, we're all toast (literally).

It seems, that also the Chinese government knows this, and they're doing the right thing.

Uhrheber··on ASRock motherboard destroys Linux software RAID
Don't get me started with ASRock. I'm definitely NOT buying anything from them again.
Uhrheber··on Ask HN: What's the largest amount of bad code you have ever seen work?
Or just use Volkswagen: https://github.com/auchenberg/volkswagen
Uhrheber··on Why We Need Innovative Nuclear Power
Maybe we need it, but we're definitely too dumb to use it safely.
Uhrheber··on The Internet Will Be the Death of Us
The same was said about books and leaflets in the hands of the masses, when typography emerged.
Uhrheber··on Pre-Existing Immunity to CRISPR Found in 96% of People in Study
Maybe we're living in a time loop, where the global gene manipulation catastrophe (aka Zombie Apocalypse) has already happened, and we, as the descendants of the survivors, are immune to it.
Uhrheber··on System76 on US Manufacturing and Open Hardware
And then the NSA intercepts your shiny new open hardware on the way to the customer, and inserts some nasty closed source spying device.
Uhrheber··on A Look at the Design of Lua
The thing is, my free time isn't infinite, and python is already everywhere on the PC (I only use Linux), so I really appreciate the fact, that I have to learn only one language for both PC and embedded. Micropython runs very well on modern microcontrollers, and you can use many of the libraries from PyPi. Also, there's a bunch of hardware drivers, which saves a lot of time. In the end, it's all about conserving knowledge. What's the best method of doing complicated things once, and then provide them to others in an easy and convenient way. I think, that currently the reusability of python code is very high, and enables a lot of people to write custom programs, that otherwise wouldn't have been able to do it. The friction of Python is just low. It's easy to learn, runs nearly everywhere, and you don't have to use advanced features, if you don't want to.
Uhrheber··on A Look at the Design of Lua
I always perceived Lua of being completely weird, and asked myself why people would ever want to use it. Especially nowadays, where embedded Python is everywhere.
Uhrheber··on New in Chrome 70
Being able to use Bluetooth REPL for microcontrollers running MicroPython is somewhat cool, but also rises serious security concerns, if such a device is used for IoT.
Uhrheber··on CHERI: Capability Hardware Enhanced RISC Instructions
Interesting. But the Altera board it runs on costs $2,995. Out of my league, unfortunately. At least privately. And professionally, I doubt that I can talk my boss into buying one.
Uhrheber··on Tell HN: Now Washington Post is asking to turn off Firefox's tracking protection
How to dig your own grave, and not even noticing it.
Uhrheber··on A RISC-V chip with built-in neural networks
Use a Taobao agent. They buy the stuff from Taobao, and remail it to you.

yoybuy.com is an example for one.

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