lunedì 2 dicembre 2013

Invasion of the Christmas Robots

Invasion of the Christmas Robots


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Merry Christmas or the secular, religious, or pagan holiday of your choice.
I love this little Christmas ornament from Instructables, so I decided to build some a few years ago and give them as gifts. The pictures show my completed bots.
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I tried to put personality into each bot; each bears an individual holiday greeting. Chef has a hand-hammered knife and an LED ‘Open’ sign. Cy included a spring bobble-head so the LED displays the classic Cylon wandering eye. Leia has her signature hair-do and a blaster.
I had trouble getting the original Instructables circuit working, so I substituted this Darkness Detecting circuit from our friends at Evil Mad Scientist Laboratories. The cool thing about this simple little circuit is that the solar panel effectively acts as the dark detector. When there’s no light to power the solar panel, a PNP transistor is activated, which allows the flashing LED to be powered from the battery. While the lights are on, the LED is off.
I extended a copper wire down through the robot body, which can either be used to make a stand, or you can put one of these little fellas on a Christmas tree by wrapping the wire around a branch.
Surplus cell phone batteries are charged by the solar panels. I found a cheap source for small solar panels at the Electronic Goldmine. The panels I got produced about 3.5V, which worked perfectly for my purposes.
My friends and family still enjoy their robots, and display the proudly.

Linkbot Intuitive Modular Robots


Linkbot Intuitive Modular Robots


Girls discovering Linkbots at Maker Faire
Learning robotics is fun for both kids and adults, but there’s a bit of a learning curve that everyone struggles with. Mechanical design and construction, electrical and electronic systems, and programming don’t come intuitively to everyone.
However, there are some robotics products available now that remove these barriers by providing modular building blocks along with intuitive controls. Robots that can be built by linking identical or compatible modules have been developed by universities and research centers, but this sort of technology has not been easily available to individuals and educators.
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One company working to change this isBarobo. The Maker Shed carries the Barobo Linkbot, and since I think it’s pretty cool it is one of my top robotic picks for the holiday season.
Graham Ryland and Professor Harry Cheng from the University of California Davis Integration Engineering Laboratory founded Barobo to bring their modular robotics concepts to the market. Barobo got some early backing from the National Science Foundation, and then launched a successful Kickstarter campaign. Their modular robotics systems were designed to support STEM education for K through 12 students, but anyone can use them for learning, research, or just for fun.
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The Linkbot kit is available at the Maker Shed. Additional kits and accessories are available at Barobo’s website, as well as STL files so you can print your own accessories if you want to.

Turn up the Volume With an Audio Hacker Shield


Turn up the Volume With an Audio Hacker Shield


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MakerShed_Holiday_Hdr-Logo_bur02I’ve been playing around with basic noisemakers like the legendary Atari Punk Console. That’s simple stuff, but there are more challenges out there: Nootropic Design’s Audio Hacker Shield adds some majorly cool noisemaking capabilities to an Arduino. It lets me record, store, and replay audio, mix samples, create audio effects and new sounds. Just the perfect thing to level up my audio skills. Buy it from the Maker Shed.

Ice Balloon Sculptures


Ice Balloon Sculptures


Beautiful ice bowl.
Beautiful ice bowl.
If you are looking for some cold weather fun, you can try this fun activity. Last night my kids filled a bunch of balloons with water and left them in the front yard to freeze overnight.
Fill your balloons and leave them out to freeze.
Fill your balloons and leave them out to freeze.
It’s not cold enough yet for them to freeze all the way through, but we got some really interesting bowls and domes.
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As it gets colder, the balloons will probably freeze all the way through overnight. So you may have to catch the weather just right to get these beauties.

Review: Bukobot 8v2


Review: Bukobot 8v2


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Deezmaker / deezmaker.com
Price as tested $1,549 assembled ($1,299 kit)
Print volume 8″×8″×8″
Heated bed? Yes
Print materials ABS, PLA, nylon, polycarbonate, PVA, HIPS, Laywood, Laybrick OS supported Linux, Mac, Windows
Print untethered? With SD card, initiated from computer
Open-source hardware? Yes
Open-source software? Yes
Printer control software Repetier-Host
Slicing software Slic3r
Named after the company founder’s dog, the Bukobot returns for the second year to the MAKE Ultimate Guide to 3D Printing. Was it well behaved, or did it come back to bite us? We spent significant time with the Bukobot to learn what makes it tick.

Updated and Upgraded

An updated version of last year’s Bukobot, the machine is back with the same 8″×8″×8″ build area, for a usable volume of 512 cubic inches. The frame, made almost exclusively of aluminum extrusions, now has fewer printed parts, some of them swapped out for laser-cut acrylic.
The footprint is about average and portability is decent; we were able to move the machine around without impacting calibration. Crucial parts are exposed and could get snagged in transit, so using the included semi-rigid travel case is your best bet. Notably, the Bukobot and its smaller sibling Bukito (see page 64) were the only machines in the shootout to come with travel cases for portability.

Unique Hardware Design

There’s no getting around the look of the unit — and our testers were black and white in their take on it. “Future industrial,” said some. “The work of a mad scientist,” said others. The electronics and power supply are exposed, as is much of the wiring — and while it’s all well handled, it does give the machine a sci-fi look.
Despite its polarizing appearance, the Bukobot got glowing reviews for its mechanical design considerations, many of which were unique among printers we tested. Deezmaker uses synchromesh cable for transferring motion instead of the belts used by every other vendor. The cables work quietly, don’t wear out like belts do, and are veritably skip-proof. We also liked the z-axis sliders that fit inside the aluminum extrusions — though the long-term performance and durability of these innovative methods aren’t yet well understood.
The Bukobot’s documentation is wiki-style, available at bukobot.com, and seems to be current. The site has prebuilt configuration files for Slic3r and Repetier-Host, two common open-source software tools, but it doesn’t go in-depth on how to operate these tools. The configurations have settings for different layer heights, infill percentages, and recommended plastics. The profiles aren’t without issues, though; one that we downloaded for 3mm plastic had a filament diameter of 1.70 set in it, a misstep that could trip up an inexperienced operator.
We called tech support on a weekend and they answered questions quickly. As well, Deezmaker has a retail presence in Pasadena, Calif., and hosts regular 3D printing meetups.
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Put a Fan On It

We tested the Bukobot with both ABS and PLA, both of which worked well. The machine prints in 3mm filament exclusively, and it can also print in both polycarbonate and nylon according to the enthusiast community. We wished it had a cooling fan to blow on the prints while using PLA — just placing a desk fan next to the unit made huge improvements in print quality.
Unlike the smaller Bukito, our Bukobot did not come with an SD card slot, meaning we had to print via USB. An SD card upgrade is available and is probably a good investment if you’re going to do longer prints.
Default print speeds were above average for the group, and we pushed them significantly faster with almost no impact to print quality. The machine lacks an integrated filament spool; the company recommends a specific lazy-susan turntable, which worked well in our testing.
This isn’t a printer for a first-timer, but it could be great in a makerspace or a tech-focused user group. It’s not for someone with small children, either — exposed cables and moving parts are easy to get your hands into.

Conclusion

Deezmaker has been consistently out in front, getting new ideas into new printers for sale — and the Bukobot 8 v2 is no exception. The exposed wiring and electronics aren’t for everyone, but if you’re looking for something fast, quiet, and a little bit quirky, this is a machine to pursue.

PRIMO FEATURES

  • Synchromesh cables provides the accuracy and durability of cables and the easy mounting convenience of timing belts.
  • Spitfire extruders have a unique “snap shut” filament tensioning system that impressed our testers.
  • Aluminum extrusion frame is light and rigid.
  • Includes a travel case.

WHO’S IT FOR?

  • Makerspaces
  • Tinkerers

PRO TIPS

  • Buy a lazy susan for filament management — they’re worth it.
  • Put a fan on it! Our machine didn’t come with a built-in extruder fan, which is critical when printing in PLA. Add a fan or use a freestanding fan to improve print quality.

Electronic Windchimes, Physical Minecraft and 8 Other Slick MaKey MaKey Projects


Electronic Windchimes, Physical Minecraft and 8 Other Slick MaKey MaKey Projects


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Banana piano. Play-Doh game controller. Pencil and paper keyboard. We first saw the incredible projects that the versatile and easy-to-use MaKey MaKey board made possible at Bay Area Maker Faire in 2012, where creators Jay Silver and Eric Rosenbaum of MIT delighted the crowd and took home an editor’s pick. Shortly after that, it blasted to Kickstarter success with more than $500,000 in funding.
MakerShed_Holiday_Hdr-Logo_bur02Since then, the diminutive, Arduino-compatible board has been released to the world and has quickly become one of our favorite products. It’s the perfect tool to inspire kids and adults alike, and has been used for an incredible array of creations. Here are ten of the our favorites, from incredible music instruments to a target range to a banana-controlled drone.

Super Cyber Deals in the Shed TODAY!


Super Cyber Deals in the Shed TODAY!


Didn’t check everyone off your list with the Black Friday rush?  Check out theMaker Shed’s superb Cyber Monday deals, valid today only!
Lounge in the comfort of your home or office and get 25% off our hottest items, including our own super popular Raspberry Pi Starter Kit!
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Looking for something fun for the kids?  Our SpinBotBrushBot andMarshmallow Shooter Kits are all 25% off!   To get these items and many more, browse our Cyber Monday products and use the coupon code MONDAY at checkout while supplies last.
Finally, keep our Facebook page and Twitter account on your radar today- there may be some additional holiday treats still to come!