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Matt Harrington
Works at Rentrak
Attended Northeastern University
Lives in Portland, OR
133 followers|149,034 views
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Matt Harrington

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Photos from Astoria
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Japanese illustrator Satsuma and his pet Northern white-faced owl love to spend time together. They're so inseparable that his owl even perches on his hand while he draws! The beautiful and intelligent-looking bird in the video carefully follows Satsuma's every move as he draws with it on his tablet. With the probably-unexpected 400k views that Satsuma's video has gathered, not only will he be famous, he might also be able to hire his owl as an i...
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Jack-of-all-trades artist and designer Chris McVeigh creates these awesome minimalist Lego models of outmoded technology including TVs, video game consoles, as well as analog phones and cameras. Not only does he design and photograph them, but also makes them available as sets you ca
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Symbiotic Machine: A robot that feeds on algae 
http://adafru.it/diS

Ivan Henriques has made this strange but cool robot that feeds on algae.

Sealed with a transparent cylinder a motor, an endless worm and a pepper grinder aligned and connected by one single axis compose the mouth/anus, like a jellyfish. This cylinder has a liquid inlet/outlet (for water and algae spirogyra) placed at the end part of the endless worm. The endless worm has an important function to pump liquid in and out and to give small propulsion for the machine. Once the motor is activated the endless worm can turn to the right or to the left. If it turns to the right it sucks liquid in. If it turns to the left it pushes liquid out. The machine is programmed to pump algae and water in and out by the information transmitted by the sensors.

In order to “hack” the algae spirogyra photosynthesis’ and apply it as an energy source, the algae cell’s membrane has to be broken. The pepper grinder that is connected at the end of the endless worm can grind the algae breaking the membrane cell, releasing micro particles. These micro particles in naked eyes looks like a “green juice” which is flushed inside the machine: the stomach.

A tube that comes from the end of the mouth with grinded algae goes though the stomach inside the ellipsoid of revolution. This tube is fastened on a 2-way valve placed in the center of the spherical shape.

Inside the ellipsoid of revolution there is another bowl, just one centimeter smaller aligned in the center. Placing this bowl inside, it creates two chambers: 1] the space between the outer skin and the bowl and 2] inside the smaller bowl. In chamber 1 the photocells are placed in parallel and in series. The photocell is composed by a plate covered with gold, a spacer in the middle covered with a copper mesh. This set up allows the “green juice” rest between the gold and copper. After the light is shed on the electrons of the grinded algae they flow to one of these metals, as a lemon battery. As all the photocells are connected, with the help from the electronic chip LTC 3108 Energy Harvester is possible to store these milivoltages in two AA rechargeable batteries.

(A life cycle with functions was idealized in order to program the machine and activate independent mechanical parts of the stomach: it has to eat, move, sunbath, rest, search for food, wash itself, in loop)

The 2-way valve mentioned above is connected as: valve 1 hooked up with chamber 1 and valve 2 with chamber 2. When the stomach works is sent information to the machine that the valve 1 has to be opened. The algae flow to this chamber and the machine uses a light sensor to go towards where there is more luminescence to make photosynthesis. It rests for ten minutes. After the 10 min sunbath the machine has to clean its stomach – and the photocells – to be able to eat again. Water is sucked in again with the mouth, and via the same valve from the algae, it pumps more water inside chamber 1 in order to have an overflow of this liquid in chamber 2. The liquid, which is now in chamber 2 is flushed out by the motor turning the endless worm and having the valve 2 opened.

Fixed on the edge of the structure opposite the mouth, an underwater pump connected by a vertical axis with a servo powers the movement of the structure giving possibilities to steer 0; 45 and minus 45 degrees.

Read more http://adafru.it/diS #robotics
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Matt Harrington

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I have been experimenting with support material in Slic3r 1.0.1.  This particular shape is creating difficulties.

I have had success using default settings and interface layers = 1 on simpler shapes.  The support inside the ring is difficult to remove without cracking the ring.  The support under the ring is too difficult to remove.

Any thoughts on how to improve the supports without generating them in a different program?
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+Josh Ajima, I'll give that a try but the support already releases cleanly under the arch. The problem seems to be when the edges of the support run parallel to a permanent surface.

In the picture, you can see that the leg of the arch under the ring is encompassed by support which is wider than the structure as a whole. I suspect that improving this would mean either adapting the shape for easier printing or changing the shape of the support. Perhaps I should give slic3r 1.1 a try. 
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These japanese seaweed designs take the sushi experience to the next level. I&S BBDO, Tokyo won the Best of Show Design Lotos at Adfest in Thailand for their Umino Seaweed designs. The designs merge traditional Japanese pattern design with the latest cutting technology. The five designs: Sakura (Cherry Blossoms), Mizutama (Water Drops), Asanoha (Hemp), Kikkou (Turtle Seashell), Kumikkou (Tortoise Shell) were developed to help the North East Japa...
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I could really use a hand getting rid of these black marks that appear randomly in my prints but are also common in areas of overhang. I am running out of time to print this birthday present.

Prusa i3, 0.4 jhead, abs at 220c
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Matt Harrington's profile photoRick Zehr's profile photoEric Lien's profile photoLaird Popkin's profile photo
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"Is there another parameter I should be looking at?"
Yes - the slicer. Try Cura instead of Slic3r.
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In his circles
96 people
Have him in circles
133 people
Robert Church's profile photo
Andy Sullivan's profile photo
Colin Hyzy's profile photo
Chad Wyman's profile photo
Branwen Harrington's profile photo
Education
  • Northeastern University
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Male
Work
Employment
  • Rentrak
    Software Engineer, present
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Currently
Portland, OR
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Matt Harrington's +1's are the things they like, agree with, or want to recommend.
GoPro + Trombone = Best New GoPro Use Ever | Break.com
www.break.com

Forget POV crashes and stunts. Attach a GoPro to a trombone and the video is hilarious and fantastic. Not to mention, has a great soundtrack

Adafruit Industries
plus.google.com

DIY electronics, open-source hardware - learn electronics

I ordered chips and guacamole but instead they gave me some sort of green salad dressing. It was a pourable consistency, looking and tasting similar to ranch dressing. Was I supposed to put it on the chips? The chips were too bland to eat by themselves so I took it back.
Public - 10 months ago
reviewed 10 months ago
2 reviews
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