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Propose HN: Screenshot Saturday

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41–50 of 175 posts

Re: Propose HN: Screenshot Saturday

#43
http://imgur.com/U60b29g.png

In my spare time, I'm working on http://fivestar.io, which gives you the best Amazon item for a query and breaks it down by price range. So you can find the 'best' product based on relevance, popularity, reviews, and cost, without having to compare reviews and popularity yourself.

The results still need some work; sometimes Amazon's API returns illogical price brackets, so a fallback is necessary, but I'm pretty happy with it at the moment.

Re: Propose HN: Screenshot Saturday

#44
post #37

I just sent out a PCB to fab: https://dl.dropboxusercontent.com/u/538662/dorkbotboard.png It's an open-source pocketable e-paper device with an (Arduino compatible) ATmega, USB transceiver, Real Time Clock, FRAM, and coin cell Li-Ion rechargeable via USB. It also has five buttons along the top. Whole thing should be around 4mm thick. Repo here: http://github.com/Hylian/arducard Some potential applications: QR codes,…

Nice. Where do you source e-paper display from?

Re: Propose HN: Screenshot Saturday

#45
post #35

I've been creating something completely reckless for the last two weekends. Screenshot: http://i.imgur.com/y5b4Yy7.png Github: https://github.com/kijin/qade (MIT License) QADE (Quick and Dirty Editor) allows anyone who can access it over the web to view and/or edit any file that the web server process has access to, as well as execute any arbitrary shell command and view the result right on the web page (via the "Con…

I think this is super cool. I've been looking for an editor that lets you do everything you need to in the browser.

Ideally this would let you write code and switch quickly between your site and the editor, like an IDE's run button, but all within the same browser tab - I did a quick (and very crude) jsfiddle to show this: http://jsfiddle.net/RyT3w/1/.

Like you say there are security issues but that isn't a big deal with local web dev or within a company that has firewalls to the outside world.

Re: Propose HN: Screenshot Saturday

#46
post #31

http://imgur.com/1wEQJqu This is mine. 2 weeks ago I set out to learn how to write android apps, and do gaze tracking. Story here: http://blog.chewxy.com/2014/04/08/eyetracking-jetpack-joyrid... The result is http://eyemap.io . It's a simple-to-use, affordable gaze tracking analytics system with your tablet. I'm still testing if people actually want the service. It's hard to make sense of it, because people sign up t…

How accurate is the tracking? Recently tried to do gaze tracking on an iPad for a hackathon and whilst we were able to detect viewing direction (left, right, up, down) getting an actual pixel info was nearly impossible. We had stable and good eye corner and pupil detection, the problem was the movements were just so small the data got extremely noisy. Curious how you approached that!

I used something like 4 different algorithms in the end to approximate the pixel location. A voting algorithm + smoothing algorithm is also used to find the final pixel location.

What I did to measure accuracy was to draw targets on the screen, and focus my eyes on them. The error the absolute distance from the estimated pixel to the actual target pixel.

To answer your question - on a Nexus 10, there is a expected error of about 0 to 160 pixels radius in office lighting conditions.

As for small movements, I use the full resolution video of 1344xwhatever, which gives a lot more leeway in terms of movements. The movements are then smoothed over time using a moving average over 8 frames, and another smoothing algo uses a pyramid kernel.

TL;DR: lots of algorithm. Quite a number are dodgy.

Re: Propose HN: Screenshot Saturday

#48
post #35

I've been creating something completely reckless for the last two weekends. Screenshot: http://i.imgur.com/y5b4Yy7.png Github: https://github.com/kijin/qade (MIT License) QADE (Quick and Dirty Editor) allows anyone who can access it over the web to view and/or edit any file that the web server process has access to, as well as execute any arbitrary shell command and view the result right on the web page (via the "Con…

I think this is super cool. I've been looking for an editor that lets you do everything you need to in the browser. Ideally this would let you write code and switch quickly between your site and the editor, like an IDE's run button, but all within the same browser tab - I did a quick (and very crude) jsfiddle to show this: http://jsfiddle.net/RyT3w/1/ . Like you say there are security issues but that isn't a big deal…

I just open the live website in a different tab (browser tab, not editor tab) and use keyboard shortcuts to switch between browser tabs. It's the only way that is guaranteed to work. I could try loading the live website in an iframe inside the editor, but it will break if the live website uses X-Frame-Options: SAMEORIGIN and the editor is located on a different hostname (which it really should be for security's sake).

Re: Propose HN: Screenshot Saturday

#49
"Visionary - thinking tools for entrepreneurs and creators"

Screenshot: http://ormind.co/wp-content/uploads/visionary.png

Prototype: http://digitalmind.io/visionary/

Visionary is my upcoming startup – it is a mindmapping tool for entrepreneurs and creative people. You can use it to generate ideas, create plans, organize information, etc.

The goal is to make the perfect mindmapping tool. There will be business model canvas, and prompts for creative thinkning based on ideas of Edward De Bono, and all kinds of awesome features to help people think and invent ideas.

Re: Propose HN: Screenshot Saturday

#50
post #15

http://imgur.com/a/agRne The app is called Fora. At first glance, an open source version of Medium. But it's really much more. I am struggling with how to describe it (which is extremely important), perhaps HN could help here. Idea: Most information (such as music, movies, blogs or products) is typically stored in database tables having various structures. Fora lets people define these tables, describe how it needs t…

Get yourself a package.json! Then you can simplify your long list of dependencies to just one "npm install".

Am I on the right track by saying this is medium for all different mediums?

As a musician and sometimes songwriter, I think it'd be really cool to be able to share songs in a user-friendly and visually appealing way, like medium does for stories. I imagine a lot of other artistic disciplines would be the same.

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