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Yuan LIU

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Ares goes strong
 
"Pika!" exclaims the delighted Ares 3D printer.

When every late night show host (temporarily) dropped Trump jokes for Pokémon Go jokes merely half week after the game’s release, I knew I couldn't ignore it any more. But I do not have a TV show to host. “I found one on my Mini Kossel's print bed. Does that count?” This 3D printing Pokémon Go joke (https://plus.google.com/u/0/+MarkWheadon/posts/Dvz17xqRktw) brought me back to Thingiverse, and found this incredible, nay, impossible design. (http://www.thingiverse.com/thing:394476/)

How impossible? The model stands 8cm tall with an average horizontal cross section of 4cm^2, arms extending 1.5cm outside the trunk at 80º, ears extending 2cm at 85º. But the touch points at the base are two tiny feet totaling less than 0.5cm^2, with a rapid arc overhang into its crotch to boot. (Additionally, its vertically extended tail, even when assembled, does not act like a support like other Pikachu models. It is impossible to balance by itself after assembly.)

The first time, I used CuraEngine slicer plugin included in Ares (OctoPrint). I thought Ares’ default settings includes support, but the G-code only included a few single-width pillars below the crotch, nothing for extended trunk and nothing for extruding arms and ears. But bridging gave no trouble to Ares, at all. The printer head knocked on the ear as it began to grow badly and poor Pika’s feet couldn’t hold it. There were odd screech-knock noises in the last few swipes so I knew it wasn’t going to end well.

I have not had too much success with CuraEngine plugin on Ares so I naturally wanted to return to KISSlicer. One question I had to ask was whether to use support. With the odd design elements, I imagine support is going to be as expansive as that fighter jet. So I decided to not use support. At least I’ll give it a shot given the extreme grip that the Harbor Freight blue tapes have. (The fact that the first build did not fail at overhang gave me more confidence in Ares’ capabilities.) No support, but grid brim. The second build lasted longer, but merely by a handful of layers before it, too, got knocked off feet. The same screeching noise. Additionally, the grid brim is very difficult to remove, especially on the flat tail.

Then I got busy working with new filament (https://plus.google.com/+YuanLiuTheDoc/posts/dHWkGyMkbAg) clear glass with glue, and so on. Pika had to wait. But not for long. After failing to complete 3D Benchy on glass bed, yet again (https://plus.google.com/+YuanLiuTheDoc/posts/YYujnXWpw4d), I sliced up Pika deluxe against GP3D filament. This time, I used pillar brim. I also gave bed surface a new twist: I applied the Playskool glue stick to Harbor Freight blue tapes. Presumably this should reduce adhesion, given how strong Harbor Freight’s tapes tend to stuck with the bottom layer.

I nervously watched the nearly 2-hour build. No screeching noise this time. At several moments, I thought I saw the model swaying, although this could be illusion. In the end, Pika appeared whole!

As expected, pillar brim is easier to remove, although on the flat tail the brim still sucks. I checked bridging on the hangovers, especially behind the long ears. Although some roughness is visible on the surface, overall bridging is extremely successful. I am not even sure if adding support would have helped on such a narrow structure. (To add to the excitement: This is also the first model I did that requires a mechanic fit.)

OK, you late night Pokémons can all Go back to Trump jokes. (Pika was built before the DNC scandal broke.)

#PokemonGo #Ares3Dprinter
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Jeremy S. Cook

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Adafruit Industries
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Limor Fried
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Francis Lee's profile photoJerry Ellis's profile photo
4 comments
 
maybe I should've asked for the definition of hacking before asking about its purpose...
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Suman Pandit

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We believe that education should be more hands on and students should get a platform to discuss, create and build.
Join and unleash the innovator in you!
https://www.youtube.com/watch?v=_u9Ah0SUc1E
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Adafruit Industries
owner

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Citizen Scientist Divers Collecting Data on Ocean Temperatures
https://blog.adafruit.com/2016/07/22/citizen-scientist-divers-collecting-data-on-ocean-temperatures/

From The Guardian:

Millions of holidaying scuba divers are able to become citizen scientists and take vital measurements of ocean temperatures, which are being driven up by climate change…

Kieran Hyder at Cefas [Centre for Environment, Fisheries, and Acquaculture Science, located in Scotland] who led the citizen science project, said: “To undertake a global science programme that could generate this information would be hugely expensive, but there are millions of sport and commercial dives every year. Making use of just a small fraction of those dives will greatly increase our knowledge of what is happening worldwide.

Read more
https://blog.adafruit.com/2016/07/22/citizen-scientist-divers-collecting-data-on-ocean-temperatures/
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Steve Tsuida

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A few of us at Protospace (a makerspace in Calgary) are building one of the UC Davis augmented reality sandboxes. It's been 50% fun and 50% horrible. Mediocre documentation, really ugly software, and it needs to run on a Linux PC. Our first build was a dud, but I think that was because the first PC was underpowered and on a non-standard architecture (frankly it was a Pi 3 running Ubuntu MATE). I've bought an i7-6700 based PC with a GTX970 for test flight two, tonight.

Wish us luck!

Sigh. The crap I do for Maker Faire…
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Post Epilogue: Got rid of Ubuntu Mate and installed Linux Mint, and it started recognizing the 3D sensor again.

Important Lesson: Don't let people call it Linux. There isn't Linux. There are Linuxes.
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Adafruit Industries
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WE ARE LIVE! From Maker to Market 04 – Design – How Adafruit developed Circuit Playground @makerio @digikey http://www.youtube.com/c/adafruit/live
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SinoVoip(banana pi)

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Unboxing de duas placas BANANA PI (BPi M3 & BPi M2 PLUS) + Quickstart ANDROID 5.1.1 Lollipop

https://www.youtube.com/watch?v=hhx-2R0JB5Y
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Eleanor Bennett

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Find out more about the incredible capabilities of Graphene from Manchester University

If you've ever drawn with a pencil, you've probably made graphene. The world's thinnest material is set to revolutionise almost every part of everyday life.

Although scientists knew one atom thick, two-dimensional crystal graphene existed, no-one had worked out how to extract it from graphite.

That was until it was isolated in 2004 by two researchers at The University of Manchester, Prof Andre Geim and Prof Kostya Novoselov.


https://m.youtube.com/watch?v=x2K3aon55YU
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Steve Tsuida

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Progress. Now we need to transplant all the hardware over to the real sandbox filled with kinetic sand, and make it all pretty for the Calgary Maker Faire.

It's an augmented reality sandbox. A Kinect and a video projector are hung overhead. The Kinect sees the shape of the sand (or in this case, a blanket, with a garden gnome underneath it) then some software maps colours and contour lines to suit the 3D surface it sees. The projector then shines that new stylized topographical map shape overtop the sand in a sandbox, and voila, you have sand you can pile up and see an instant topographical map texture to suit it.

Make your own:
http://idav.ucdavis.edu/~okreylos/ResDev/SARndbox/
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Stefan Hacker's profile photoSteve Tsuida's profile photo
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As a tip, we had all kinds of problems trying to get it to work with Ubuntu Mate 16.04.1. We switched to Linux Mint, 18 "Sarah" using the Cinnamon desktop, and things went smoothly.

Under Ubuntu Mate 16.04.1, the Kinnect wasn't detecting at all.

We also had to switch out from a donated 15-pin VGA type projector to a new HDMI-inout projector to get control of the projected geometry. Our computer only has HDMI and DVI out, so I was running the HDMI cable into a converter to turn it into a VGA signal, and for some reason the projector assumed I wanted to show everything in 16:9, even if the image was a 4:3 1024 x 768 image (native for the projector). Once I hooked it up to a new Epson PowerLite 1761W projector, I was able to line things up again. The 1760 isn't officially a short throw projector, but it's going to work with about 40-45 inches (1.14 m) of clearance above the bed of the sandbox, which we can live with.

If it matters, I'm using this PC: http://www.memoryexpress.com/Products/MX60768 A Nightblade MI2-005TW with a Core i7-6700, 8GB, 1TB + 128GB SSD, and a GeForce GTX 970. It comes with Windows 10,. I added a SSD drive in the available little drive bay, and put Linux Mint there (since eventually the PC will go home with me, and be my X-Plane rig, and Blender Render farm box).
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Adafruit Industries
owner

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WE ARE LIVE ! Pseudorandom 11: DIY Guitar Pedals -@CollinMel @adafruit#pseudorandom http://www.youtube.com//adafruit/live
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Open Green Energy

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Don't throw your dead 9V battery.
You can make cool stuffs by recycling it's parts...


http://www.instructables.com/id/Unusual-Uses-of-9V-Battery
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Open Green Energy

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4 ideas to make useful things from 9V dead battery....
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Open Green Energy's profile photoPaul Frederick's profile photo
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+Open Green Energy
Thanks. I was buying those little key chain pointers for my cat. But every one of them after a while they would stop working. I took one apart to see what was going on. The switch is just crimped to a board, no solder, and every time the switch is depressed it loosens that crimp up a little. Eventually there's no contact there at all, and pressing the switch does nothing. But to access that board you have to destroy the unit opening it up. Because the case is glued closed. So there's no fixing it. Once I saw that I decided to make my own.
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Bryan Barnes

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A few new things added to the concrete lathe project. Mainly a vid of making the motor drive pulley out of MDF. 
10 new photos · Album by Bryan Barnes
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David Fowler

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The Tesla Valve - www.physicshack.com

A beautiful working demonstration of Nikola Tesla's very elegant and very clever valvular conduit.

Crafted from solid oak, CNC machined and hand finished in the UK. This executive desk toy includes precision ball bearings to ingeniously demonstrate the workings of the Tesla Valve.

The valve was originally designed to feed fuel in to the innovative Tesla Turbine, though more recently has been used in a number of hi-tec applications ranging from fluidics to mixing.

Precision steel ball bearings are used here in place of the fluid to offer a real and tactile insight in to the mechanism and operation of this truly unique solid state valve, producing an executive desk toy that is truly fascinating to play with.

See it in action here...
https://youtu.be/sXUdOtSXkJs

Available from Etsy:-
https://www.etsy.com/uk/listing/454053170/nikola-tesla-valve-valvular-conduit?ref=shop_home_active_1


Visit me at:-
www.physicshack.com
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Young礼娜

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Projects on Raspberry Pi, may it be helpful to you
One raspberry pi 3 board is enough to help you make a simple computer all by yourself(click here learn how-to). So, what will happen if we connect several pi boards, that is a supercomputer. Here I collect 5 raspberry pi cluster projects as your reference to learn to make a raspberry pi cluster ...
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Adafruit Industries
owner

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10pm ET TONIGHT! From Maker to Market 04 – Design – How Adafruit developed Circuit Playground @makerio @digikey https://www.maker.io/en/design?utm_source=Media&utm_medium=video&utm_content=Design&utm_campaign=CircuitPlayground
Check out these resources we’ve compiled to help you with the Design stage of your project.
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