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Aron Petau 2025-05-05 13:15:39 +02:00
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@ -3,7 +3,6 @@ title = "Ballpark"
date = 2022-03-01
authors = ["Aron Petau"]
description = "A 3D Game Concept in Unity"
banner = "/images/ballpark_menu.png"
[taxonomies]
tags = [
@ -21,6 +20,8 @@ tags = [
"university of osnabrück"
]
[extra]
banner = "/images/ballpark_menu.png"
show_copyright = true
show_shares = true
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@ -3,7 +3,6 @@ title = "Bachelor Thesis"
date = 2021-04-13
authors = ["Aron Petau"]
description = "My Bachelor Thesis: an online psycholinguistic study using reaction time"
banner = "/images/rt_choice_corr_by_condition.png"
[taxonomies]
tags = [
@ -26,6 +25,8 @@ tags = [
"university of osnabrück"
]
[extra]
banner = "/images/rt_choice_corr_by_condition.png"
show_copyright = true
show_shares = true
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@ -3,7 +3,6 @@ title = "Master's Thesis"
date = 2025-04-24
authors = ["Aron Petau"]
description = "Human - Waste: A thesis examining interactive workshops"
banner = "/images/masterthesis/puzzle.jpeg"
featured = true
[taxonomies]
@ -31,6 +30,7 @@ tags = [
]
[extra]
banner = "/images/masterthesis/puzzle.jpeg"
show_copyright = true
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+++
Find all my projects here.
They are sorted by date, you can also filter by tags.
They are sorted by date, you can also filter by tags.

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title = "BEACON"
date = 2022-03-01
date = 2018-09-01
updated = 2022-03-05
authors = ["Aron Petau"]
description = "Decentralizing the Energy Grid in inaccessible and remote regions"
@ -26,7 +27,7 @@ tags = [
]
[extra]
banner = "../india_key_monastery.jpg"
banner = "india_key_monastery.jpg"
show_copyright = true
show_shares = true
@ -97,7 +98,6 @@ So, as you would expect, during winter, but also when it rains, the felt quality
As for the daily supply time, the average sits at 15.1 hours out of 24, meaning the people have electricity only for 62.9 percent of the time, some, as for example the people in Diskit only have a sad 4 hours of daily access. On top of that, this estimation does not account for the snowfalls in Spiti for example, where it is not uncommon to experience 3 consecutive days of powercut or more.
As the Power Meter is supplied by the government, a solid 82 percent of the houses have a working power meter, if one assumes that the 13 percent who did not know whether they have a power meter, do have one, we can say that around 95% of the houses have a power meter.
Another goal of the studies was to find out what would incline people to be caring and sharing with the available electricity, something rather unimaginable here in Germany.
In general, the uninformed openness to delaying usage of electricity on a scale of 1-10 was around 5.5, with the additional information that a smart delay would cause an overall price reduction, the acceptance went up to 6.9, a good 14%. This implies that people would be a lot more inclined to give up conveniences if the benefits have a direct impact on them.

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title = "3D Modeling and CAD"
date = 2018-07-05
updated = 2025-05-02
authors = ["Aron Petau"]
description = "Modelling and Scanning in 3D using Fusion360, Sketchfab, and Photogrammetry"
@ -21,7 +22,7 @@ tags = [
"work",
]
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banner = "../render_bike_holder.png"
banner = "render_bike_holder.png"
show_copyright = true
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title = "Plastic Recycling"
date = 2022-03-01
date = 2019-03-19
updated = 2025-04-15
authors = ["Aron Petau"]
description = "A recycling system inspired by Precious Plastic, Filastruder, and Machine Learning"
banner = "/images/recycling_graphic.jpg"
[taxonomies]
tags = [
@ -30,6 +30,7 @@ tags = [
]
[extra]
banner = "recycling_graphic.png"
show_copyright = true
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@ -42,7 +43,7 @@ What can be done about it?
We can design our products to last longer, we can also print recycling labels on them so they do not have to get burned after their first life. We can take care to only print functional objects, not just fun toys nobody uses.
Yet, none of that prevents the use of virgin plastics. If you buy a spool of filament, there are some recycled options, but usually at twice the price at worse quality. No wonder recycled filament fails to convince the masses. It is mostly a fun thing YouTubers can pursue, not a valid commercial process.
{% include video id="vqWwUx8l_Io" provider="youtube" %}
{{ youtube(id="vqWwUx8l_Io") }}
In my opinion, the core problem is the nonexistent economic feasibility of a proper recycling process. Identifying the exact material of a piece of trash is a very hard problem, definitely not solved yet. So why do we mix the plastic up in the first place? There is a general willingness of people to recycle, but the system for it is missing.
@ -68,7 +69,7 @@ After finding some way to drive this massive axis, I feed the beast and hopefull
The solution for the motorization was an old and used garden shredder that still had an intact motor and wiring.
We cut it in half and attached it to the shredder box.
{% include video id="QwVp1zmAA4Q" provider="youtube" %}
{{ youtube(id="QwVp1zmAA4Q") }}
After replacing the weak force transmission screw for an industrial coupler, we were ready to try it out. Obviously, there are still security concerns in this prototype, a proper hopper is already being made.
@ -81,13 +82,14 @@ This is the Filastruder, designed and made by Tim Elmore, in an attempt to creat
Here you can see the extrusion process in action.
{% include video id="FX6--pYrPVs" provider="youtube" %}
{{ youtube(id="FX6--pYrPVs") }}
The Filastruder is controlled by an Arduino and is highly configurable. The laser sensor visible in the video is already working, but I am missing more direct control over the diameter of the filament.
When it all really comes down to the single variable of the filament diameter responsible for the quality of my recycled project, a simple Machine Learning optimization directly jumps at me: I have a few variables like winder speed, extrusion speed, heat, and cooling intensity. These variables can be optimized on the fly for an exact diameter. This is actually roughly how virgin filament is produced, commercial facilities just manage much faster.
![The variables in an iterative optimization](/assets/images/recycling_variables.png)
So far, I am aware of a few companies and academic projects attempting this process, but none of them manage to get either the quality or the price of other products available. Automatization does not just take out jobs away, I think it can also be a helpful tool, for example tackling environmental issues such as this one.
This project is very dear to my heart and I plan to investigate it further in the form of a master thesis.

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title = "3D printing"
date = 2018-05-03
authors = ["Aron Petau"]
description = "My 3D Printing journey and the societal implications of the technology"
[taxonomies]
tags = [
"accessibility",
"creality",
"decentral",
"democratic",
"engineering",
"experiment",
"gcode",
"octoprint",
"parametric design",
"plastics",
"prusa",
"slicing",
"private",
"work",
"additive manufacturing",
"3D printing",
"university of osnabrück"
]
[extra]
banner = "prusa.jpg"
show_copyright = true
show_shares = true
+++
galleries = {
gallery = [
{ file = "cloning_station.jpg", title = "A plant propagation station now preparing our tomatoes for summer" },
{ file = "elk.jpg", alt = "elk", title = "We use this to determine the flatmate of the month" },
{ file = "dragon_skull_1.jpg", alt = "dragon skull", title = "A dragon's head that was later treated to glow in the dark." },
{ file = "ender2.jpg", alt = "ender 2", title = "This was my entry into a new world, the now 10 years old Ender 2" },
{ file = "lithophane.jpg", alt = "lithophane of my Grandparents", title = "I made some lithophanes, a process where the composition and thickness of the material are used for creating an image." },
{ file = "prusa.jpg", title = "This is my second printer, a Prusa i3 MK3s." },
{ file = "vulva_candle.jpg", alt = "vulva on a candle", title = "This candle is the result of a 3D printed plastic mold that I then poured wax into." },
{ file = "pinecil.jpg", alt = "pinecil", title = "An enclosure for my portable soldering iron" },
{ file = "lamp.jpg", alt = "a lamp design", title = "A lamp screen design that particularly fascinated me, it effortlessly comes from a simple 2D spiral shape." },
{ file = "prusa_enclosure.jpg", alt = "Prusa enclosure", title = "A custom-built printer enclosure made up of 3 Ikea Lack tables and around 3 kgs of plastic." }
]
}
## 3D Printing
{{ youtube(id="Yj_Pc357kEU") }}
### 3D Printing is more than just a hobby for me
In it, I see societal changes, the democratization of production, and creative possibilities. Plastic does not have to be one of our greatest environmental problems if we just choose to change our perspective and behavior toward it.
Plastic Injection molding was one major driving force for the capitalist setting we are in now.
3D Printing can be utilized to counteract the production of scale.
Today, the buzzword 3D Printing is already associated with problematic societal practices, it is related to "automatization" and "on-demand economy". The technology has many aspects to be considered and evaluated and as a technology, many awesome things happen through it and on the same page it fuels developments I would consider problematic. Due to a history of patents influencing the development of the technology, and avid adoption of companies hoping to optimize production processes and margins, but also a very active hobbyist community, all sorts of projects are realized. While certainly societally explosive, there is still a lot going for 3D Printing.
3D Printing means local and custom production. While I do not buy the whole “every household is going to have a machine that prints what they need right now at the press of a button”, I do see vast potential in 3D Printing.
Thats why I want to build my future on it.
I want to design things and make them become reality.
A 3D Printer lets me control that process from start to finish. Being able to design a thing in CAD is not enough here, I also need to be able to fully understand and control the machine that makes my thing.
I started using a 3D Printer in early 2018, and by now I have two of them and they mostly do what I tell them to do.
I built both of them from kits and heavily modified them. I control them via octoprint, a software that, with its open and helpful community, makes me proud to use it and taught me a lot about open-source principles. 3D Printing in the hobbyist space is a positive example where a method informs my design and I love all the areas it introduced me to.
Through it, I felt more at home using Linux, programming, soldering, incorporating electronics, and iteratively designing.
I love the abilities a 3D Printer gives me and plan on using it for the [recycling](/plastic-recycling/) project.
{{ gallery(name="gallery") }}
During the last half year, I also worked in a university context with 3D printers.
We conceptualized and established a "Digitallabor", an open space to enable all people to get into contact with innovative technologies. The idea was to create some form of Makerspace while emphasizing digital media.
The project is young, it started in August last year and so most of my tasks were in Workgroups, deciding on the type of machines and types of content such a project can provide value with.
Read more about it on the Website:
[DigiLab Osnabrück](https://digitale-lehre.virtuos.uni-osnabrueck.de/uos-digilab/)
Looking forward, I am also incredibly interested in going beyond polymers for printing. I would love to be able to be more experimental concerning the material choices, something rather hard to achieve while staying in a shared student flat. There have been great projects with ceramics and printing, which I certainly want to have a deeper look into. One project I want to highlight is the evolving cups which impressed me a lot.
[Evolving Objects](https://evolving-objects.nl)
This group from the Netherlands is algorithmically generating shapes of cups and then printing them on a paste extruder with clay.
The process used is described more here:
The artist [Tom Dijkstra](http://tomdijkstra.info) is developing a paste extruder that can be attached to modify a conventional Printer and I would very much love to develop my version and experiment with printing new and old materials in such a concept printer.
[Printing with Ceramics](https://wikifactory.com/+Ceramic3DPrinting/forum/thread/NDQyNDc0)
[The Paste Extruder](http://tomdijkstra.info/dirtmod/index.php)
Also with regards to the [recycling](/plastic-recycling/) project, it might make sense for me to incorporate multiple machines into one and let the printer itself directly handle pellet- or paste-form. I am looking forward to expanding my horizon there and seeing what is possible.
Cups and Tableware are of course just one sample area where a backtrack toward traditional materials within modern manufacturing could make sense. There is also more and more talk of 3D Printed Clay- or Earth homes, an area where [WASP](https://www.3dwasp.com/en/3d-printing-architecture/) is a company I look up to.
They built several concept buildings and structures from locally mixed earth, creating some awesome environmentally conscious structures.
Adhering to principles of local building with locally available materials and taking into account the infamous emission problem within the building industry has several great advantages.
And since such alternative solutions are unlikely to come from the industry itself, one major avenue to explore and pursue these solutions are art projects and public demonstrations.
I want to explore all these areas and look at how manufacturing and sustainability can converge and create lasting solutions for society.
Also, 3D Printing is directly tied to the plans for my master's thesis, since everything I manage to reclaim, will somehow have to end up being something again. Why not print away our waste?
Now, after a few years of tinkering, modifying and upgrading, I find that I did not change my current setup for over a year. It simply works and I am happy with it. Since my first beginner's printer, the failure rates are negligible and I have had to print really complex parts in order to generate enough waste for the [recycling project](/plastic-recycling/).
Gradually, the mechanical system of the printer shifted from an object of care to simply a tool that I use. In the last years, hardware, but especially software has matured to a point where, at least to me, it tends to be a set-and-forget situation. On to actually making my parts and designs. Read more about that in the post about [CAD](/cad/)

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@ -154,8 +154,6 @@ Contact me via [Email](mailto:aron@petau.net) for further questions.
</div>
### Software Skills
**UNIX** \| bash / zsh \| Arduino IDE \| Raspberry Pi