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Ask HN: What did you make during lockdown?

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Re: Ask HN: What did you make during lockdown?

#391
post #295

Earlier quoted context omitted.

(Note: if you feel that this is just "regular" anxiety and it can pass, my wall of text is something you can skip. Only thing that should be considered are developing coping skills! I'm just trying to be helpful.) I'm thinking you'll reach the end of this dark tunnel here soon - but with a bit of work! The posters here have been thoughtful and there's a lot of good stuff to consider - I may be able to touch on this f…

You make very good points and I concur that getting professional help helps a lot - from past experiences. It seems that most likely I exhausted my coping mechanism pool, and if the state continues to deteriorate, I will most definitely reach out to some professional. Thanks!

"It seems that most likely I exhausted my coping mechanism pool".

Been there, done that! I have about 10 "core" mechanism that have stuck, but some stop being effective because I needed to change them up to make it more suitable to address my suffering.

The psychwards I went to before my Dx/meds taught (DBT) (Dialectical Behavior Therapy) it's more about coping and life skills to execute on. You can also find therapists that practice with this modality. In a nutshell, DBT is all about "mindfulness" and "skills" (basically more involved coping mechanisms). It's more "actionable" than regular CBT in my opinion - but I'm biased.

You can skip the DBT therapy and look up all of the skills and practices on your own too. It's good to have a professional as a therapeutic guide and hold you accountable, however. I won't go too far into that, but you have to track "bad habits" (PG-13) and if you followed through with what you set out to accomplish for you illness.

Also, if you're in the US, you can freely/anonymously join the local DBSA (Depression and Bipolar Support) meeting. The name is misleading though - it's basically for any mental or "advanced" mental illness. My sample size is 1, but their were folks in the meetings that had debilitating anxiety / anxiety disorders soo..

Re: Ask HN: What did you make during lockdown?

#392
I built a new Optical Flow AI. Instead of being a cranky old man complaining about other people's mistakes, I decided to just fix things myself.

Before Corona hit, I had created a new data set and given a talk about all the stuff that current state of the art AIs for Optical Flow get wrong. I find the topic interesting, because those bugs directly lead to drones like Skydio crashing into thin wires or branches without leaves.

Plus, I needed optical flow to work for a project, but the state of the art didn't work well enough.

Then I thought "ah f* it" and so I built a new architecture that avoids the issues that I had been whining about.

Now, 36 days of training later, it looks like I might have succeeded :)

https://www.dropbox.com/s/3tfrs9sjm9heypk/example_selflow_ha...

Top left and right are the two input images. Bottom center is the "ground truth", meaning the result that a perfect AI would produce. Bottom left is one of the State of the Art, according to the Sintel benchmark. Bottom right is my new architecture.

You can see that the State of the Art tends to blur the two persons together and blur them with the background between them and the frame border. My approach uses monocular depth cues to correctly segment them into multiple movement layers.

Re: Ask HN: What did you make during lockdown?

#393

Having a monthly "Show HN-athon" would be nice (or is that already a thing and I always miss them?). - I did some woodworking at the start of lockdown. It was very therapeutic. Built a small table with a flip-top back where charging accessories can be stored: https://imgur.com/ea67ANO - And some more woodworking to build a shoe rack (never enough room for all our shoes): https://i.imgur.com/ihw12YT.jpg - A Raspberry…

That side table is amazing. How did you learn woodworking? I’ve been meaning to get into it but have no idea where to start.

Back in college I got the bug for woodworking, so I went to the local big-box, bought a hand saw, screws, an electric drill/driver, and some wood. I built a spice rack using just that. It came out _terrible_. Lopsided, broken drill bits inside it, brackets holding it together. I had no idea how stain worked, so I bought a can of stain and threw the whole thing into a trash bag with the wood to leave it for a day.

I still have that ugly spice rack. Sometimes the best way to learn is to just do.

Many years later I got the bug again and that time I started spending more time on YouTube. I find videos to be an incredible resources, whether I'm browsing for something specific or just watching good content and learning secondarily. Matthias Wandel has a channel with a variety of content that's worth watching just on its own, but you'll learn endless amounts of woodworking skills as well. Steve Ramsey's channel is great, though his videos can definitely be a bit annoying to watch. Really there are too many great channels to name. Best bet is to figure out what kind of thing you _want_ to build and then search for videos on how to build that. I guarantee there will be hundreds of great, simple tutorials.

If you've got a woodworking store nearby (e.g. Rockler) they often have free or cheap classes that can be great even for newcomers. Those are great because you don't need any tools; they provide everything. And they cover a wide range of stuff so you can figure out what kind of woodworking you like. Maybe you like turning wood, or working with a scroll saw to build small decorative pieces. I attend a Father's Day class where we made a wooden bow tie. It was free and introduced me to scroll saws, inlays, and spray varnish. Best of all, I got a great gift to give my father at the end of it.

Re: Ask HN: What did you make during lockdown?

#394
I made 2 things:

I made a website for friends and family to play poker online. https://playcards.live. No cards or chips required. Works on any devices.

I parsed en.wikipedia using AI and extracted events, time and location: https://whataday.info. Given an event, it shows you what was happening closeby, in spacetime.

Re: Ask HN: What did you make during lockdown?

#395
I built a tool to check if an email exists without sending any email. I also created a SaaS out of it: [link redacted].

The tool connects to the target email's SMTP server, and parses the response of the "RCPT TO" command. To avoid IP blacklisting, I use Tor.

The code is in Rust, 100% open-source. The core library is here: [link redacted]

Re: Ask HN: What did you make during lockdown?

#396
I made Autotable, a tabletop simulator for Riichi Mahjong: https://pwmarcz.pl/autotable/about.html

I wanted to play with my friends the way we used to in real life. It ended up being a very interesting and rewarding project.

Here is a blog post about developing the game: https://pwmarcz.pl/blog/autotable/

Re: Ask HN: What did you make during lockdown?

#397

https://thiswoddoesnotexist.com/ I got to playing around with recurrent neural networks and made a site that generates Crossfit "Workout of the Days (WODs)". It's trained on the workouts from crossfit.com. My motivation were to learn more about how character-based RNN's work, remember how to host a site on my Digital Ocean VPS with flask, and do some fun frontend work. It posed a few unique challenges, like scraping…

I love this project! Have you tried actually completing any of the generated workouts?

How do you calculate overfitting for something like this? I know how you would do so with a more traditional supervised learning model with numerical inputs/outputs but NLP still seems a little like black magic to me since I haven't dived into a project using it myself. Is it just a comparison of similarity between generated posts and all posts in the training set? How do you calculate how "close" an output is to an input?

Re: Ask HN: What did you make during lockdown?

#398
I worked hard and managed to ship my first ever alpha product, https://NoteBrook.com . I am iterating on it nights and weekends to build out the core feature set and get it on every platform as published apps. It’s been a really interesting journey but I’m glad I have been working on it and moving it forward. It’s really great to see all the users signing up, and the beta version is going to really move it close to feature completeness as a first release.

Re: Ask HN: What did you make during lockdown?

#399
Implemented the Redis API on DynamoDB. Very interesting experience because I learnt a lot about Dynamo, and now have a 0-infinity autoscaling system ready for for my other side projects and consulting apps. The Dynamo API is pretty low level and arcane, but Redis is a nice sweet spot that makes sense to me for modeling.

https://dbproject.red/redimo

Re: Ask HN: What did you make during lockdown?

#400
post #4

I rebuilt our deck. Would share a picture but not really sure the best way to do that. Thinking to redo our floors next. We pulled out our carpet on the main floor two years ago and painted the subfloor as a temporary solution. Current plan is to buy 1x8 pine boards and go for a sort of rustic wood floor look.

I'm in the middle of doing the same. It's more of a little porch-deck thing--only a couple feet off the ground, underlying structure mostly sound, etc. The problem I ran into was that I underbought decking boards and now the local Home Depot has been out for the past few weeks. I want to get the same boards so they match so I'm hesitant to shop elsewhere right now. Talked to some folks and it's apparently not any maj…

I would guess you could put in a special order and then you'd just have to wait for the next time they get a shipment.
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