Robot Cares For Grave Stones While Honoring The Dead

This robot was built to care for the graves and honor the dead in the Jewish tradition. It is called “Stoney” and was developed by [Zvika Markfeld] based on a concept by [Itamar Shimshony] who is working toward an MFA degree. The image above shows it in action as part of an installation; to our knowledge it has not been used for actual grave sites. But the concept is not a joke; it’s something that makes the observers think.

The base of the robot is an iRobot Roomba on top of which is built a platform for a robot arm. The arm has easy access to two palettes, one holds small stones, and the other flowers. There is also a small box which holds a rag. It navigates around the grave, placing stones, flowers, and using the rag and a water dispenser to symbolically clean the headstone. All of this is controlled by an Arduino Mega board which controls another Arduino running the arm, as well as the microcontroller in the Roomba.

The details of the ritual, as well as the components of the robot are well explained in the clip after the break.

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Send Your Nexus 7 Back… To Tighten One Screw?

It seems that some of the Nexus 7 models have an assembly issue that makes the bezel uneven with the screen. It’s just in one spot but your shiny new toy shouldn’t have this kind of problem. Of course it comes as no surprise that Google wants you to send it back for service. What is a surprise is that the fix involves tightening just one screw. Now we can’t stand for shipping something round trip when it comes to this low-skill fix. Luckily neither can [Baddspella]. He shows us just how easy it is to repair the Nexus 7 yourself.

The only tools you need are a guitar pick (or other thin plastic prying device) and a very small Phillips screwdriver. Starting at the top of the tablet he uses the plastic pick to pry off the back of the case. This exposes the screws which hold the bezel in place. Find the loose one, and give the screwdriver a turn. Now just snap the back cover in place and you’re done. We’ve embedded the video after the break for your convenience.

It’s super simple…. so don’t be afraid to crack that thing open.

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Summer And Tailgating DIY Projects Roundup

tiger-paw-cornhole

If you live in the Southeastern United States as I do, you’ve probably been enjoying a summer of grilling out and going to the beach or lake. You’re also may be getting ready to enjoy football tailgating season, especially if you attend or live near a college town. Here’s a couple of DIY items that should be welcome at any outdoor event you choose to attend.

How to Make a Cornhole Board:

cornhole toss board

Although there are no LEDs or an Arduino on this one (we’d love to see your pimped boards in the comments), these instructions should work well for making your basic cornhole set. Of course you can always add some folding legs to it, but they fit together pretty well as is.  As for the paint, there are many ways to do this, but check out the pic after the break to see the laser-cut stencil that the Tiger Paw in the first picture was made from.  Thanks [Essam]!

PVC Ladder Toss Set:

ladder toss game PVC

These instructions should tell you all you need to make your own ladder toss (or whatever less-PC name you decide call it). As for the golf ball “bolas,” you’ll have to figure out how to put a hole in the middle of them. This technique (as seen in a links post earlier) should cover it, but best to be careful that you’re not plunging into a liquid-core ball. Eye protection is recommended.

LED Glow Cubes:

solar LED glow cube

Although not a traditional tailgate item, these glowing solar LED cubes could serve as an alternative to the normal LED path lights. What’s in these instructions is how to simply take the parts source, a solar path light, apart and insert it into a translucent cube. We could see this made with several different colored LEDs and an Arduino for some other cool effects.  A logo of your favorite team could be added with a laser cutter or CNC router for tailgate use. Continue reading “Summer And Tailgating DIY Projects Roundup”

Robotic Hand With Haptic Feedback

While I was at Heatsync Labs in Mesa Arizona, [Nate] mentioned that he was really proud of helping someone build a robotic hand. I have tracked down that project because it looked pretty cool.

[Macguyver603] built this robotic hand that is controlled by a glove with flex sensors. He was originally going to 3d print the structure for the hand but the availability of the laser cutter allowed him to create something a that would be a little more structurally sound. Haptic feedback is supplied by vibrating pager motors that are triggered by sensors in the tips of the robotic hand’s fingers.

The total cost of the project was roughly $240, and there’s unfortunately no video. It did, however, earn him second place at the state fair!

Sound-o-Light: Simple And Interesting DIY Speakers

This is a great project for a slow afternoon, or a beginners introduction to DIY. [William] shows off a really simple speaker project that results in a light show as well as a decent enclosure. He’s using a PVC elbow to mount the speakers. They’re just glued in place. Below that, a section of clear tube allows for the lighting effects and a flange at the bottom supplies stability. For the lights, [William] opted to forego any complicated electronics and simply wired LEDs to the speakers themselves.

Admittedly we’ve seen more complicated systems in the past, but his results are quite nice and could be done pretty fast.

Largest CNC Router Is Controlled By Hand

Fresh from this year’s SIGGRAPH is a very interesting take on the traditional X Y-table based CNC machine from [Alec], [Ilan] and [Frédo] at MIT. They created a computer-controlled CNC router that is theoretically unlimited in size. Instead of a gantry, this router uses a human to move the tool over the work piece and only makes fine corrections to the tool path with the help of a camera and stepper motor.

The entire device is built around a hand held router, with a base that contains a camera, electronics, stepper motors, and a very nice screen for displaying the current tool path. After a few strips of QR code-inspired tape, the camera looks down at the work piece and calculates the small changes the router has to make in order to make the correct shape. All the user needs to do is guide the router along the outline of the part to be cut with a margin of error of a half inch.

You can read the SIGGRAPH paper here (or get the PDF here and not melt [Alec]’s server), or check out the demo video after the break.

Anyone want to build their own?

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Southwest Tour: Heatsync Labs In Mesa Arizona

With temperatures rising to around 117degrees, we arrived in Mesa Arizona to visit Heatsync Labs as part of our Southwest Tour.  We have actually seen a tour of Heatsync in the past, and you should probably refer back to it for the quick run-through of the facility. When I was there, there was simply so much to see and talk about that the video ended up running over 10 minutes and I feel we barely scratched the surface of what was going on.

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