Here some of my favoriets:
(Note: The title is “extremely clever” not “I want to boost my 3 minute design that cost me 8 days”)
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Well somehow it also fits into here. The link for the conversion kit on aliexpress is right in the YouTube video description (I don’t know if it works, but it’s definitely clever):
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Self printing robot snake
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Well, that’s probably a league of its own…
This one is ambitious, one might say overly ambitious or perhaps too idealistic, but it’s very much aligned with the original rep-rap goal of self-replicating printers. And that original rep-rap is, of course, the origin that evolved into what we have today:
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His idea with the negative angle in the threads is pretty impressive. 
Nice… he is using also an X1. And since he links a Printable model and not a Makerworld one, he will get a dumps up for sure!
I also did a rough draft which I never finished as it just doesn’t make sense to me unless 350mm can be achieved. But based more on the idea:
Interestingly, the majority of humanity is fed by small farmers. Industrialized food production produces too little income compared to the resources it consumes. Studies in France have shown that small farmers are able to earn up to 1000 USD per year from 1 square meter - but here everything up to a height of 2 m is clearly used and in a completely different way. It just shows the top level when used the height with professional small farmers, something a normal person will probably never achieve. I myself achieve 2500 USD for 9 square meters but flat on the ground and at Swiss food prices.
There are also many advantages to such systems, including less weeding, pest infestations such as snails and so much less pesticides. Also that you’re no longer on your knees all the time, but that’s still good for me and I have the space 
On the other hand, a very interesting film on Netzflix: “Hack your Healt” which shows that we need bacteria and that the bacteria-free diet in the Western world leads to massive problems. So it’s not just about vitamins and carbohydrates etc., but also about bacteria and the utilization of food and how your body has been trained to utilize it. Which bacteria were bred in your intestines and which ones were killed with antibiotics and which ones are still ingested, killed by cooking and do not more come into the body and will grow and help to get the food into the blood circulation, etc.
However, I wouldn’t touch Fillamente Made in China for things like this… Possibly at least one FDA stamp in the Western world, so that at least no heavy chemicals get into the garden.
I have no idea whether I’m right, so do it at your own risk. However, the world is, as always, constantly changing. and 3D Printing is a hugh part of it.
How clever and how simple… A high end elegance in 3d Printing and how everyone can make his idear come by true by 3D Printing.
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That is so wrong on so many levels LOL
It works for sure but for how long ?
The setup is literally creating a dead short between the panels.
Means that one is feeding the other and both will be ruined quickly.
These GA12-N20 motors are available in 3,6 and 9V.
The tiny panels certainly produce enough juice for the 3 and 6V versions.
By adding a diode in positive line for each panel no backfeeding will happen.
Why does it matter if works without so well ?
A solar panel produces electricity but it is also sort of a LED - they produce IR light when connected to power
The motor stops in the perfect position because both panels produce equal output - with no difference the motor can’t turn.
In this position though ALL the produced electricity goes directly into the other panel.
Really the last thing you want to do is to feed the opposite voltage to a panel…
The power has to go somewhere the only way out is by heating up the panels…
It is a nifty design nonetheless but do yourself and add two diodes
Even the fact, thats on a vehicle is not that much interessting to me.
This PaTS-Wheel was on an industry-oriented site and the post took off tremendously - far away from any 3D printing topic. Well, I was wondering if it would be on YouTube too and then took the YouTube link…
A weight-activated gripper is one thing. An easy on weight adusteble gripper an other - the fact that it was printed on a home printer also a different storry… No matter how long it lasts, the fact that you can print something like that at home (I know it but many just start realizing it - as i got day by day many oh… ahh… it already works and so on)…
Yes, it is on a cart - I almost didn’t notice it
Today I give a simple roof drain to a roofer - he couldn’t get a word out of his mouth for 10 minutes. He couldn’t believe that the part (problem solver) were he can`t get cames from a 3D printer that even he could afford…