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kejaed

1,047 karma · joined November 21, 2014

Chief Engineer

http://kje.ca (email: ken@) http://linkedin.com/in/kennethjamesedwards

[ my public key: https://keybase.io/kejaed; my proof: https://keybase.io/kejaed/sigs/hitw0c0Sng-l_SdqQlTydZor7J1Ff1rQcRwZ3jtx3K0 ]

submissionscomments
kejaed··on Ask HN: Really afraid to start my own technical blog, any tips?
You might take a look at Julia Evans' writing as an example of this, learn, write, learn some more. Your blog doesn't have to be a reference textbook on a topic, but a log of your explorations on whatever topics you find interesting. If you have something incorrect, the worst case is nobody reads it. Best case is you start a discussion with a reader and learn something.

https://mobile.twitter.com/b0rk

http://jvns.ca/

kejaed··on Vultr introduces $2.50/month plan
Merci bien.
kejaed··on Vultr introduces $2.50/month plan
Would you mind sharing the technicalities of splitting requests for your blog across 3 providers? Is the 'load balancing' part done at the DNS level?
kejaed··on Welcome to the New AWS AI Blog
There was a recent post on HN about getting a tensorflow model running on a raspberry pi to detect trains. The blog post describing the process was quite well done. I bet it would apply quite well to detecting deer.

https://news.ycombinator.com/item?id=13603225

http://svds.com/tensorflow-image-recognition-raspberry-pi/

kejaed··on Ask HN: How do you deal with clients that don't pay on time
Mike Monteiro’s Fuck You, Pay Me is a good watch on this topic.

https://creativemornings.com/talks/mike-monteiro--2/1

kejaed··on Ask HN: What's your primary development laptop?
Cool, thanks for the detailed response. I was toying with getting a 13" MBP, but have always like the 12" tiny form factor. I do have a big slow and heavy 13" Dell from the day job right now, so we'll find out how this new project goes. Shutting down from overheating doesn't sound too great through, I guess that's what you pay for doing OpenGL stuff in the heat.

I play with computer vision and image processing stuff on the side, as well as some iOS and watchOS development, so I'm worried that the 12" might be a little underpowered for these applications. The turbo boost frequencies are quite significant though. So many trade offs!

kejaed··on Ask HN: What's your primary development laptop?
Hi, if you don't mind sharing, what sort of development work do you do? Do you do much local development or is the heavy stuff offloaded to other computers? I like the form factor but I worry about lack of performance.
kejaed··on Ask HN: What's your favorite blogging software? (as of Feb. 2017)
I've self-hosted wordpress and it's fine, does the job, and there are a million and one free resources as well as paid ones out there. Can be a pain to maintain and there's always a risk of things going sideways with a bad plugin install or upgrade.

If you are OK with self hosting then you are probably going to be OK with Jekyll & hosting on GitHub Pages. That's free, you can use a custom domain, and it's fast. There are a lot of Jekyll themes out there to make it look good too.

kejaed··on Ask HN: Non-US founders, are you reconsidering appling to YC due to Trump?
As a Canadian working on a project that may or may not go for funding, the current state of American politics hasn't dissuaded me from the idea of applying to YC.

However, in late 2016 I was interviewing with Palantir, and the political climate, combined with Thiel's involvement, let me to withdraw my candidacy after 2 phone interviews prior to the on-site.

kejaed··on Ask HN: Are there 'dumb' ways to make money as a developer in your spare time?
Another side of the coin is at $100/week that's $5k a year. What if you 'worked on your career' and got a $5k raise? Do that once and that $5k will be there every year from that point on.
kejaed··on Show HN: Simple image resizing/optimization service
Pretty slick.

Have any signups yet?

kejaed··on Ask HN: What are the best resources to create an LLC/Incorporate?
Thanks for that. I've been reading through the Federal government's website lately and was wondering about any gotchas.

If you don't mind sharing, why did you need an American bank account?

kejaed··on Ask HN: What is the most exciting development in your field right now?
SWIR sensors are there for hot burning lights. LWIR (aka thermal) sees things that are every day temperatures. Both wavelengths have better transmittance through fog than visible light so we say those sensors can 'see through' fog. The physics comes down to the wavelength of the light vs the size of the molecules of the medium the light is trying to get through [1].

Another fun part is that fog at one airport can be different than fog at another, so while the weather conditions at both locations may say visibility is "Runway Visible Range (RVR) 1000ft", that is for a pilots eyes, and the same camera may work just fine at one location and not at all at the other.

[1] https://upload.wikimedia.org/wikipedia/commons/e/e9/Atmosphe...

kejaed··on Ask HN: What is the most exciting development in your field right now?
Aerospace Engineer - Enhanced Flight Vision Systems

TLDR: Fancy fused infrared (LWIR/SWIR) and visible spectrum camera systems may 'soon' be on a passenger airliner near you.

Using infrared cameras to see through fog/haze to land aircraft has been happening for a while now, but only on biz jets or on FedEx aircraft with a waiver. The FAA has gained enough confidence in the systems that they have just opened up the rules to allow these camera systems to be used to land on passenger aircraft.

Combine that with the fact that airports are transitioning away from incandescent lights to LEDs (meaning a purely IR sensor system is not longer enough), and you get multi-sensor image fusion work to do and a whole new market to sell them to.

Here is a blog post (from a competitor of ours) talking about the new rules.

https://blogs.rockwellcollins.com/2017/01/17/worth-the-wait-...

kejaed··on Ask HN: What are the best resources to create an LLC/Incorporate?
If anyone has any Canada-specific suggestions along these lines I'd be interested to hear them.
kejaed··on Fitbit will lay off 110 employees amid challenges in wearable market
I've started working on my take over the world side project and it has a watchOS component. I've been pleasantly surprised with the access to the CoreMotion and HealthKit data on the watch, as well as the ease of access for accessing the network directly or passing data and files back and forth with the iOS companion app.
kejaed··on Fitbit will lay off 110 employees amid challenges in wearable market
1Password has an Apple Watch app, and you can choose the passwords you want to have on your watch. With a PIN on the watch that locks it when taken off one's wrist, I'm pretty happy with that sort of security.

Another step would be a extra 1Password pin, of some other kind of something you know code. A 4 pad touch screen that could use a combination of short press, long press, force-touch press as a combination would be pretty cool, come to think of it.

kejaed··on Show HN: Math Attack – My side project of 3 years
Just a note, to work on the port you don't need a device to run in the simulator and you don't need to pay the $100 until you want to submit to the store. As of last year you can install on personal devices without paying the $100 either.
kejaed··on Ask HN: Who is hiring? (January 2017)
Unfortunately just opening a subsidiary in another country doesn't help, one of the 'features' of ITAR is that it is extraterritorial, so even if you open a subsidiary in another country all the ITAR provisions apply in that country, as well as all the export controls of that country. It's tons of fun even working for a Canadian company.
kejaed··on My New Year’s Resolution – read a research paper every weekday
Reminds me of the 3 pass approach in the paper, "How to read a paper"

http://blizzard.cs.uwaterloo.ca/keshav/home/Papers/data/07/p...

kejaed··on Ask HN: Are you a licensed or Professional Engineer?
While I've never used my P.Eng. stamp, I've my Licence from the Association of Professional Engineers Ontario since 2009. It hasn't really helped or hurt so far, but I do like the feeling of having it, "I'm a professional!" There have been some government jobs I've qualified for that have required a licence, so there's always that reason to hold on to it.
kejaed··on Ask HN: How do you organize your personal code library?
For things I'd like to have out in the open I use github.

For things I'd rather keep private I use bitbucket, who have free private repos.

kejaed··on Ask HN: Email hosting with custom domain support?
I've used Google Apps (G Suite) for hosting kje.ca email for a long time and it's great. I'm luckily grandfathered under the free plan but I'd pay $5 a month for the service if I had to.
kejaed··on Ask HN: What is your hardware/garage side-project?
My buddy has something going along the same lines but is using temp sensors to detect a pint being pulled:

https://mobile.twitter.com/toms_beer_keg/status/799323771043...

kejaed··on Ask HN: Bootstrapper on the brink, what to do?
Can you get more up-front commitments from current clients, prepay for a year for a discount? This could let you pull the plug now on the day job and focus fully on your own project. The idea of that part of the class was that businesses often both customer and even suppliers to fund themselves, and that alternative and creative financing solutions can be negotiated.

Also, as others said, you might be able to find a small business loan since you already have cash flow, via traditional or other methods (online lending).

kejaed··on Amazon Go
Amazon's had their conference, reInvent 2016, going last week

https://reinvent.awsevents.com/

kejaed··on Cards Against Humanity is digging a hole in the earth
And now you and everyone else that visits the site have seen their business URLs
kejaed··on Ask HN: What are you hacking on this weekend?
The hardware setup is based on what I had on-hand:

- Raspberry Pi with WiFi dongle

- Arduino Uno connected to rpi via USB

- NeoPixel (ws2812b) LED strip connected to arduino https://www.aliexpress.com/item/individually-addressable-1m-...

- Adafruit Power Supply https://www.adafruit.com/products/658

All that is in a Tupperware box below the deck with an extension cord for power running to it.

I'm running PlatformIO on the rpi to program the arduino from the command line (love it), and still moving between FastLED and the NeoPixel libraries to drive the LED strips. I've installed Homebridge on the rpi to eventually be able to control the setup with Siri from an iDevice.

I'll eventually properly document the project, but for now, here are my brain-dump notes:

https://github.com/kejaed/deckLights/blob/master/projectNote...

kejaed··on Matrix Multiplication
This is a great idea
kejaed··on OK Go’s video, for the song “The One Moment”, took only 4.2 seconds to film
"I made a motherfucker of a spreadsheet"

Love it.

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