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Robert Quattlebaum (darco)
Works at Nest Labs
Attended DigiPen Institute of Technology
Lives in San Jose, CA
4,265 followers|557,447 views


By the way, for those of you in Silicon Valley... Ruby Bridges (Who was the little girl in this painting) will be receiving the John Steinbeck Award and speaking in San Jose on February 24th.
Norman Rockwell was born on this day in 1894. His painting 'The Problem We All Live With' shows a young African-American girl being escorted to her first day at an all-white school during desegregation in 1963. It's the subtle details of this work that make it so arresting, including the offensive grafitti above the six-year-old girl's head and the squashed tomato that has narrowly missed her pristine white dress.

Learn more about the stories behind Rockwell's iconic illustrations here:

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Incredible way to visualize the flight path of the Falcon 9 boostback
Interactive Launch Simulator
A stunning visual tool for understanding Falcon 9 flight profiles.
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Wolfgang Rupprecht's profile photo
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I wanted to get some feedback on a new method I came up with for efficiently and reversibly encoding callsigns into numeric identifiers/addresses. The link below has the full specification. Here is the abstract:

This document is a specification for efficiently and reversibly encoding radio callsigns into numeric identifiers, which may then be used as addresses for packet radio or other purposes. Additionally, this document also describes a way to encode a callsign into an EUI-48 and EUI-64 address using similar methods, containing up to 8 and 11 characters, respectively.

While this addressing scheme was developed for amateur radio purposes, there is no particular reason why it could not be adapted for use with other radio services that make use of callsigns.
Jason howe's profile photoFabián Di Tullio's profile photo
Bigger issues you have you would have to use something that can give the radio and LAN address

In a mobile context I think we're about 10-15 years away before we will a LANor wifi as inclusion as part intranet part of IPv4 or IPv6 network and/or Internet protocol..

We are a min of 5-10 years away before a LAN jack is going to standard LAN and Internet is going to be a part of your PC LAN network and Internet connection, wether you have sattelite Internet, WiMAX, 4g, DSL, cable or fibre back bone to the net..
At the moment we are in the infancy of cat-x remote control..

It will likely be a few years yet still where we have ip control to the point that that everything has..

We have had ip control within computers since the advent of xp..

Though we are far from it being applicable for use unless you are reverse engineering current gen wireless hardware to create a ham net...

You already 10-20 digit alpha numeric IP address under IPv6 which hardware encodes the port..

Note in pc land we've had IPv6 since Windows xp..

Note if you want to adapt this under an all callsign use regardless of radio features 1st you would make all radios have input service for call sign use not mention reinstatement of licensing protocols across all radio band or formats

You dice all the radio licensing and have the ham license to cover every band which it doesn't exactly do..

And have registration certifications for commercial, marine and any other band you wish to to be included in just like what you have for a drivers license for a vehicle

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Does anyone know of an NFC smart-card reader that includes a keypad? I don't need a smart card slot, but I do need an integrated keypad... The only ones I've found so far have proprietary and undocumented interfaces. :(
Kevin Groce's profile photo
Ugh this is a good question. Yah all the ones i have seen have been for POS applications. 
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I'm very sympathetic to the cause, but I find this rather disturbing. They are giving Koko a single source of information (likely worded to specifically generate this sort of distressed reaction) and using her reaction to make an appeal to emotion (which is a logical fallacy). 
Koko, The Sign Language Communicating Gorilla

Koko, a female gorilla who belongs to one of the rarest species on earth which can communicate using sign language, and the only one that can send a message to mankind : the preservation of biodiversity must be written in the Paris Agreement.

This clip was made with footage of Koko reacting after she has been informed about what is at stake at COP21. After being familiarized with the issues, she was allowed to improvise.

#climatechange    #cop21paris   #koko  
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Jesse Coombs's profile photoChris Nandor (Pudge)'s profile photo
Indeed.  There's no way Koko actually understands a single significant thing about the Paris Agreement, its bases and its ramifications and the nature of the disagreements involved.

It's a good thing I have no emotions.
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Gordon McLellan's profile photoJeff Karpinski (3d0g)'s profile photoPipe Dreams's profile photo
i think people need a hidden mailbox cam to watch up and down the street, solar powered and wifi connected so you never have to deal with it
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Have him in circles
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Recap video of one of the most epic engineering feats of 2015. As an added bonus, it includes a few more close-up camera angles of the landing.

Watching it gives me goosebumps.
Andrew Coulson's profile photo
Yep, looks like science fiction!

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Wireless digital water mixers for showers. I'd be really surprised if they invested any significant amount of effort into securing the wireless connection between the head unit and the hidden mixer behind the wall (but, hey, who knows). Would suck if your shower got hacked and scalded you with hot water.

I know I would avoid installing one of these unless I knew that the manufacturer understood the basic principle that the inclusion of a radio for controlling the operation of a product necessitates a thurough security review. 
Wireless Showers are available in both Electric and Digital Mixer versions. Wireless Showers operate with the main shower unit hidden away, and communicates wirelessly with a wall mounted co...
Wolfgang Rupprecht's profile photo
I'd be really surprised if the software was even written/ported in house.  Most of these consumer electronic products seem to be written by some low bidder that does the minimum required to get the firmware running.  nmap your home internet electronics some time.   It is an eye opener.
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I really like Amazon's Dash Buttons. They are convenient, inexpensive, and easily allow other family members to by specific products using my account without needing any intervention by me. But I want a "Dash" button for doing other things, like turning on the laser printer that I have connected to a smart outlet that is usually turned off for power saving reasons. Yes, I could (and probably will) buy a "burner" Dash button and do that ARP hack that allows you to use the button to do other things, but doing that is not sustainable—These devices surely cost more than the $5 I am paying for it (the primary cell inside of the thing is worth around $3). The reason it is so locked down is because the rest of the cost for the device is being paid for by the band associated with that button. If I buy a button and never use it to buy anything from that brand, then I'm actually hurting the business model that enables this sort of thing. I don't want to do that.

I'd prefer it if someone (either Amazon, or someone else) made a similar device that was as easy to configure and simply allowed me to POST to a URL (either via HTTP or CoAP. Bonus points for letting me upload root certificates or a client certificate/key).

I'd buy such a thing for $15 in a heartbeat. Then everyone would be happy.

Anyone know if such a thing exists right now?
Michael Hartman's profile photoKevin Groce's profile photo
I am sure you could do it with one of those cheapo wifi modules. 
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A friend posted this on a Google Hangout. Pretty much the most epic GIF I have ever witnessed.
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"...and that's why I will urge high-tech and law-enforcement leaders to make it harder for terrorists to use technology to escape from justice."

By linking data security with terrorism, the president seemed to hint at a policy shift.
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"Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety." — Benjamin Franklin, November 11th, 1755

There will be more terrorist attacks. And at least some of those terrorist attacks will be coordinated via tools like iMessage and WhatsApp. It's not a matter of if, it is a matter of when. This wouldn't be because these specific hypothetical terrorists are smart and know to use encrypted tools: If they were smart they wouldn't touch a smartphone for coordinating such an attack.

Even so, I do not support a back door for law enforcement, for three reasons:

* Engineering practicality: It is a very difficult problem to solve in such a way that does not lead to abuse. Once this infrastructure is in place, it is only a matter of time before it starts being used inappropriately.
* Legal practicality: The makers of these devices do not control what applications can be installed or run on their devices, which would allow actual secure communication. Also, would it cover systems like OpenPGP? What about devices without cellular radios, like laptops? Do they get backdoors, too? If not, why not?
* Practical effect: Even if law enforcement has these capabilities, and even if 100% of terrorist attacks were coordinated using iMessage, there is no guarantee that they would be able to prevent all terrorist attacks. In any case, if such laws are put into effect, the terrorists will find other, more secure, ways to coordinate. Attacks will still happen.

The bottom line is that I have seen no evidence that such capabilities significantly improve our security, and, as a free society, we have a great deal to lose by implementing them.

And when we implement these things and people are still dying, what's the next move? What's the next liberty that we will be called upon to sacrifice at the altar of security? Those who care about the 2nd amendment, take note.

These terrorists want to turn us into the very thing we once feared: a George Orwell novel. Turns out it wasn't the Russians we had to worry about: it's ourselves. With the help of the terrorists, we will all run into the loving embrace of Big Brother's protection—and lose everything we hold dear in the process.
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Have him in circles
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Software Engineer
  • Nest Labs
    Embedded Platform Connectivity Engineer, 2013 - present
  • Apple Inc.
    Display Systems Engineer, 2007 - 2013
  • Crystal Dynamics
    Art Tools Engineer, 2005 - 2007
  • Voria Studios
    Co-Founder, 2002 - 2005
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
San Jose, CA
Valdosta, GA - Bellevue, WA - Sammamish, WA - Redwood City, CA - Campbell, CA - Beech Mountain, NC
Maker of Things
My full name is Robert S. Quattlebaum.

I live in San Jose, California. I grew up in a small city in south Georgia called Valdosta.

My amateur radio call sign is N6DRC.

Bragging rights
Original author of Synfig, Made the ybox2 kit, Did some cool stuff with Christmas lights, Doing lots of Internet-of-Things stuff, Built a 3D printer, Looking for the next project
  • DigiPen Institute of Technology
    Science of Real-Time Interactive Simulation, 2000 - 2002
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Robert Quattlebaum (darco)'s +1's are the things they like, agree with, or want to recommend.
Gmail thinks my PGP-signed or S/MIME-signed emails are spam - Google Pro...

Google Product Forums > Gmail Help Forum >. Categories: Fix an issue or problem : Managing Settings and Mail : Mac : Other Browser (please s

Nest is moving again. And again.

A look back at where Nest Labs started - a leaky garage in Palo Alto - to where we are now.


We're Nest, makers of the Nest Learning Thermostat.


Synfig Studio is a free and open-source 2D animation software

Finally, A Watchable Version of Dora

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Pants are Optional.

Missing Hiker Huddled With Cat

To survive almost a month in cold.

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