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dejv

2,312 karma · joined July 17, 2009

Indie software developer since 2005. Fiddling with projects, freelancing from time to time and basically trying to find a way to not ever have another proper job again.

If I am not writing software I am making wine or tend vines on my organic farm.

E-mail: davidfilip@gmail.com

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dejv··on People are planting more vegetable gardens
You should add it to the compost, spreading it to ground will probably don't do much as it will oxidize away.
dejv··on 2020 Stock Market Crash
Some fat is going to get trimmed, passion project gets canceled and unprofitable companies are going to have tough times.
dejv··on Ask HN: Was the Y2K crisis real?
Man, I've just remember that I had to fix this kind of bug in 2010 and I am sure I just bumped the number to 20. I guess somebody had to be fixing it lately, I just hope they didn't just replace 2 with 3.
dejv··on Ask HN: Recommendations for Working from Home?
Not having shoes on is my biggest perk of WFH. I do visit HQ few times a year and spending whole day with shoes indoor is something I can't stand.

It might be subconscious but having some of my 20 years old ripped punk t-shirt, sweatpants and not wearing socks is something that puts me into zone.

dejv··on Ask HN: Recommendations for Working from Home?
I've tried white boards few times and it never stuck. I do like to use small paper notebooks, one for each project.
dejv··on Ask HN: Recommendations for Working from Home?
I was in this camp for many many years, especially when I was single I didn't have notion of work and life. When I was in mood I work like crazy, then I might slack a bit or maybe went swimming at 1pm because there were no people. It started to change when I start living with my, now, wife and then it all get serious when we had kids.

They might be tiny, but they do require some structure and habits. I dont know how they do that, but there is going to be some serious door banging at 16:02 by our 16 months old signaling my allotted office time is over.

dejv··on Ask HN: Recommendations for Working from Home?
14 years of working from home under my belt. Tried many things during those years and this is whats working best for me:

- my office is separate room that I visit just when I am at work. Kids were born into this situation and understand that this room is off limits.

- Good external monitor, mouse and ergonomic keyboard + good chair. I also like to use headphones when working even when nobody is around.

- I do keep regular schedule: work day starts at 8:00 with 15 minutes walk as my commute to clear my head from life stuff. lunch is at 12:00, I eat it with my wife and kid at the kitchen or we might go out to one of our local bistros just outside our house. I am not required to work like that, but it is just easy to keep in rhythm.

- no video games, no movies, no distraction when working. I might leave for bathroom or to make some green tea, but no procrastinating on my way, no playing with child or talking to my wife is allowed.

- when the day is over, I stand up, go for 15 minutes walk in nearby park (my commute to clean my head after work) and then I am back home.

- when I am done I am done. I might check Slack or emails, but the office is closed and no work is allowed.

It might seen strict, but working this way is actually best for me and my family. Years ago I was not that disciplined, worked a bit here and there, maybe watch a movie mid day and then work till 10pm. Now I just know when I am working and when I am allowed to just turn off.

dejv··on San Francisco bans public events holding more than 1,000 people
In Czech all events over 100 and also all schools are now closed.
dejv··on Climate change: Warm winter ruins German ice wine harvest
I can count at least 3 years in past 10 years without required temperatures for ice wine production. Even in years with harvest we see it later and later in winter, which leads to loss of grapes due to the rot making it not economically viable anymore. 20 years ago you did ice wine harvest in late November/early December. Now you are lucky harvesting in mid January.
dejv··on Delphi's 25th Birthday
A lots of industrial/medical/lab instruments still use Delphi for user interface and some high level control. Delphi is still quite popular, but more and more niche, in Germany, Austria and countries with manufacturing/development ties to those countries.
dejv··on Ask HN: What interesting problems are you working on?
NIR spectrometer for assessing ripeness of wine grapes. It is palm sized device that you take to the vineyard and by scanning many bunches you get numbers you need: brix, pH, acids.

There are many research papers talking about it for many years, but till recently there was not cheap enough hardware available so it just get stuck in university laboratories.

It is still tough project to pull out as it combine hardware, cloud software, machine learning and there is quite some laboratory work required as well. Doing all of this as a single person and bootstraping is extra challenge but I guess I don't know better.

I've got into it 5 years ago, when I decided to quit technology, bought small farm and build winery. At first I wanted to analyze the wine itself, basically to make traditional method obsolete, but performance of this kind of instruments are not good enough for liquid that complex. It turned out grape analysis is much easier target to tackle.

dejv··on For tech-weary Midwest farmers, 40-year-old tractors now a hot commodity
Once you want to add AC you need to add more support systems making whole machine more complex and more expensive to operate.

There are actually tractors like that, but those brands are failing unable to compete with high tech tractors like JD or New Holland on one side and with simple old tractors on another.

dejv··on For tech-weary Midwest farmers, 40-year-old tractors now a hot commodity
There is Solectrac electric tractor which seems like something that fits your description. It is definitely in very early stage, but I can't wait to see this type of vehicles to take off.
dejv··on For tech-weary Midwest farmers, 40-year-old tractors now a hot commodity
As a person operating decades old equipment I see trade offs here. Old machines are reliable and cheap to operate, but they are also NOISY, steering require quite some muscle strength and cabin without ac and filters is not pleasant and most importantly good for your health.
dejv··on For tech-weary Midwest farmers, 40-year-old tractors now a hot commodity
Somebody posted about open source tractor, but deleted the post before I managed to reply, so here we go:

Growing up in communist country it was really hard to buy tractor for your personal use as private enterprise ls was prohibited and all land was confiscated except of 1000m2 for personal use.

Owning tractors even for land this large (and to share with family and friends) was still something desirable so people come with their own designs build on top of ready-made or repurposed materials.

I can still see those machines from 70s or even 50s still working as there is nothing in them to break down.

I personally own 30 years old tractor which first life was spent on rice field of Japan. Again very simple build and outside of structural damage there is almost nothing that can fail. I am sure it will live for another 40 or 50 years without much problems.

dejv··on Show HN: Tailwind Button Playground
Not yet, it still lives only on my computer, but the designs are still meh or in best case utilitarian. I've started to build this product for exact reason you mentioned: finally build something substaintial with Vue, learn how to work with Webpacker (and other Rails 6 features) and build Flutter app (yet to be done).

I am going to do big rewrite of my saas app this year, this is my attempt to learn couple of new technologies to see if they are fit for me and as a place to make mistakes before coding something I care about.

dejv··on Show HN: Tailwind Button Playground
I am a stereotypical backend developer with little experience implementing custom design, before Tailwind I was using stock bootstrap.

I am building my first product using this tool and after I get over first hurdles everything went smoothly. Tutorials on their homepage are pure gold and helped me going. Also take a look on youtube channels of Tailwind authors (Refactoring UI), those are great.

In conclusion I am glad I've taken some time to learn basics, it took me maybe three or four afternoons and now I'm as productive as in Bootstrap + my designs look much much better.

dejv··on Ask HN: Solo devs, how do you plan your development?
I use two paper notebooks per project: one for planning/architecture/schematics which is used for more long form writing.

Second notebook is for todo items (like add name validation for model Item). When I finish something I cross it out. I usually scan past two or three pages, so many things are left in void. Thats actually a good thing, if something is important I just write it again on fresh page + I occasionally go through wider history to check if something important was not left behind.

+ I keep Notes app open all the times with note per project. Here I keep list similar to the Todo notebook but it contains things that have to be done. Once I am done with task I delete the line.

Basically paper notebooks are for development of fresh features and Notes is for bugs and fixes of production code.

dejv··on Programmers Should Plan for Lower Pay?
As a developer in Eastern Europe I am in this game for almost 20 years and I feel like things are changing fast.

Ten or even five years ago it was very rare to find companies that will pay well for remote talent and it created weird culture when your core senior engineer is paid less than out of school junior dev just because they are living in place with lower costs. At the end companies got what they paid for.

Nowadays I see new wave of companies that understand this better and treat remote workers as first class citizens: not just by amount of money they pay but also bringing these developers to the table and letting them to have stakes in the project not just handling assignments.

I don't know much about culture in India or Philippines, but after working years with developers in both SV and places like Germany, UK and Romania I don't see much difference.

dejv··on Ask HN: 2020 goals and resolutions?
I didn't follow any system, just tried stretching exercises I remember from my days of doing karate as a kid and another exercises I was taught on physiotherapy.

You know basic stuff, trying to touch my toes while standing. Some hand stretching. I guess it was totally ineffective, but number of nights with migraines are down a lot.

I want to start exploring yoga during 2020

dejv··on Ask HN: 2020 goals and resolutions?
Yeah, yoga is something I am going to do, not sure which kind yet or if I want to attend classes or just do it solo.
dejv··on Ask HN: 2020 goals and resolutions?
- keep improving my flexibility: after 25 years of sitting in front of computer my back is a mess. I've started stretching during 2019 but progress is slooooow

- get back to doing more independent development after one year of working for an agency

- rewrite my SAAS. Right now it feels like it hit plateau and I need to change few major things to get it to next level and hopefully get it to the stage to sustain me full time

- build new building for wine production: it took me 4 years to get all paperwork done, now I hope construction is going to be faster

dejv··on Ask HN: CS, still a good career in 3-5 years?
Controlled environment agriculture = greenhouse. There are two scales of this operation: small scale low-tech option which require just thermostat and fans and then you have big scale high tech versions that costs many millions of dollars and come with all the controllers built-in.

For low tech option there is just not enough margin and leverage to make it worth spending your time on it. For high tech options you are having millions in debt and another million or two in running cost (labor, seed, electricity) and with margins in single digits you are probably don't want to risk playing with your recipes. Safer bet is to outsource your tech needs to the companies that have teams of people working on just one single problem.

dejv··on Ask HN: CS, still a good career in 3-5 years?
Once you get into level of assets that require tractor like this your main job is financial planning.
dejv··on The Accidental Book Review That Made Jack Kerouac Famous
Quite a few sites just draw overlay over the article, so sending it to Instapaper/Pocket work fine. Unfortunatelly paywalls are changing lately and it works on fewer and fewer sites.
dejv··on Nebraska farmers vote overwhelmingly for Right to Repair
Yeah, I do own 30 years old tractor and it work just fine as is very simple machine and there are very few things that could break. This is why machines of this grade just keep their price: after initial drop the price just stays the same and demand is strong. I can see tractors from 70s changing hands on regular basis
dejv··on Moving to Germany as an Australian (2016)
Well Prague - Berlin is not ICE train but EC train, but yeah the food in there is good and cheap. The best food was always on Berlin - Budapest route with Hungarian restaurant car. Great goulash in there, but this train now terminate in Prague.
dejv··on Having Kids
Single income setup is quite common in some European countries. In my country you can get paid leave up till your youngest kid is 3 or 4 years old. The amount of money you get is way bellow even minimum wage (~ 200 USD/month depending on the number of months you want to take off), but most people who can afford it stay at home.

My wife is currently finishing her third year at home and there will be at least two more.

dejv··on Ask HN: Do you still code in BASIC?
No, but I’ve jut seen kit of scientific gear (ADC module) that boasted about having examples in both fortran and basic to make integration easy.
dejv··on Czech Trail Marking System (2006)
Ambiguity is the key here. The system is set in a way that no matter where you are there are lines going just anywhere and once you are into it you will never miss any interesting spot. Also all the lines connect to each other, so I can start walking in one place and circle whole country.

Bonus point: whole system depends on volunteers who keep markings on all lines.

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