3D Printing And Modelling With A Robot Assistant

March 20, 2018 by Steven Dufresne 12 Comments

[Huaishu Peng] and a group of other researchers have come up with a system that allows them to use virtual reality (VR) to model an object in a space in front of them while a robot simultaneously 3D prints that object in that same space, a truly collaborative effort they call the RoMA: Robotic Modelling Assistant. This is a step toward fixing the problem of designing something and then having to wait for the prototype to be made before knowing how well it fits the design goals.

The parts: designer, AR headset, AR controller, rotating platform, robotic printer — The parts

How does the designer/robot collaboration work? The designer wears an Oculus Rift VR headset with a camera mounted to the front, turning it into an AR (Augmented Reality) headset. In front of the designer is a rotating platform on which the object will be 3D printed. And on the other side of the platform is the 3D printing robot. In the AR headset, the designer views the platform, the object, and the robot as seen by the camera but with the model he’s working on overlayed onto the object. An AR hand controller allows him to work on the model. Meanwhile, the robot 3D prints the model. See it in action in the video below.

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Test Ideas Now With Sensors Already In Your Pocket

March 20, 2018 by Roger Cheng 15 Comments

When project inspiration strikes, we’d love to do some quick tests immediately to investigate feasibility. Sadly we’re usually far from our workbench and its collection of sensor modules. This is especially frustrating when the desired sensor is in the smartphone we’re holding, standing near whatever triggered the inspiration. We could download a compass app, or a bubble level app, or something similar to glimpse sensor activity. But if we’re going to download an app, consider Google’s Science Journal app.

It was designed to be an educational resource, turning a smartphone’s sensor array into a pocket laboratory instrument and notebook for students. Fortunately it will work just as well for makers experimenting with project ideas. The exact list of sensors will depend on the specific iOS/Android device, but we can select a sensor and see its output graphed in real-time. This graph can also be recorded into the journal for later analysis.

Science Journal was recently given a promotional push by the band OK Go, as part of their OK Go Sandbox project encouraging students to explore, experiment, and learn. This is right up the alley for OK Go, who has a track record of making music videos that score high on maker appeal. Fans would enjoy their videos explaining behind-the-scene details in the context of math, science, and music.

An interesting side note. Anyone who’s been to Hackaday Superconference or one of the monthly Hackaday LA meetups will likely recognized the venue used in many of the OK Go Sandbox videos. Many of them were filmed at the Supplyframe Design Lab in Pasadena. It’s also nice to see AnnMarie Thomas (Hackaday Prize Judge from 2016 and 2017) collaborated with OK Go for the Sandbox project.

While the Science Journal app has provisions for add-on external sensors, carrying them around would reduce its handy always-available appeal. Not that we’re against pairing smartphones with clever accessories to boost their sensing capabilities: we love them! From trying to turn a smartphone into a Tricorder, to an inexpensive microscope, to exploring serious medical diagnosis, our pocket computers can do it all.

[via Engadget]

Parts Bin Spooky Eye Build

March 19, 2018 by Lewin Day 13 Comments

Halloween is a great holiday for hacks, bringing out the creativity in even the most curmudgeonly wielder of a soldering iron. [tdragger] was looking to have some good old fashioned Halloween fun, and got to thinking – putting together this great Spooky Eyes build in their attic window.

The effect itself is simple – just two glowing orange LEDs spaced the right distance apart, placed in the highest window in the house. As every young child knows, the attic is almost the spookiest room in the house, second only to the basement.

Various effects were programmed in to the Arduino running the show, like breathing and blinking effects, to give that frightful character. For maintenance and programming purposes, [tdragger] wanted to have the Arduino remotely mounted, and searched for a solution. Rather than leaning on a wireless setup or something modern and off-the-shelf, instead some old RJ11 telephone extension cables were pressed into service. These allowed the eyes to be placed in the window, allowing the Arduino to be placed in a more accessible location.

It’s a basic project, but one that has a good fun factor. Sometimes it’s good to use what you’ve got to hand, so that the buzz of enjoyment isn’t dampened by the long wait for shipping. For something bigger, check out this giant staring eyeball.

All Your IPhone Are Belong To Us

March 19, 2018 by Al Williams 46 Comments

Apple’s commitment to customer privacy took the acid test after the San Bernadino shooting incident. Law enforcement demanded that Apple unlock the shooter’s phone, and Apple refused. Court cases ensued. Some people think that the need to protect the public outweighs the need for privacy. Some people think that once they can unlock one iPhone, it won’t stop there and that will be bad for everyone. This post isn’t about either of those positions. The FBI dropped their lawsuit against Apple. Why? They found an Israeli firm that would unlock the phone for about $5,000. In addition, Malwarebytes — a company that makes security software — reports that law enforcement can now buy a device that unlocks iPhones from a different company.

Little is known about how the device — from a company called Grayshift — works. However, Malwarebytes has some unverified data from an unnamed source. Of course, the exploit used to break the iPhone security is secret because if Apple knew about it, they’d fix it. That’s happened before with a device called IP-box that was widely used for nefarious purposes.

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DIY Power Supply And TS100 Outlet Combo Shows Off Great Layout

March 19, 2018 by Donald Papp 18 Comments

Here’s a combination of two important electronics workbench tools into a single, cleanly-assembled unit. [uGen] created a DC power supply complete with a plug for the popular TS100 soldering iron, and it looks great! Most of the main components are familiar offerings, like a LM2596 DC to DC buck converter board and a DPS3003 adjustable DC power supply unit (we previously covered a DIY power supply based around the similar DPS5005.) The enclosure is an economical, featureless desktop instrument case whose panels were carefully cut to fit the necessary components. There’s one limitation to the combo: the unit uses a switch to either power an attached TS100 iron, or act as a general DC power supply. It cannot do both at once. So long as one doesn’t mind that limitation, it’s a nice bundle made from very affordable components.

It’s easy for something to look like a hack job, but to look clean and professional involves thoughtful measurement, planning, and assembly. Fortunately, [uGen] has supplied all the drawings and bill of materials for the project so there’s no need to start from scratch. Also, don’t forget that if the capabilities of the DPS power supply units leave you wanting a bit more, there is alternative firmware in the form of OpenDPS; it even offers a remote control feature by adding an ESP8266.

Building A Tricorder Prop Worthy Of Mr Spock

March 19, 2018 by Tom Nardi 24 Comments

We’ve all been there. You want to assemble a proper Star Trek: The Original Series landing party prop set, but the TOS tricorders you can find on the market are little more than overpriced toys. Imagine the embarrassment of beaming down to Cestus III with a plastic tricorder. The Metrons wouldn’t have even bothered with the trial by combat with such a sorry showing.

Unhappy with the state of Star Trek props, [Dean O] decided to take matters into his own hands. He purchased a TOS tricorder from Diamond Select Toys and set out to modify it into something a bit closer to Starfleet standards. Anything painted metallic silver on the toy was replaced with a machined aluminum duplicate, adding some much needed heft. He even spruced up the controls and display.

To start, [Dean] stripped the tricorder down, separating all of the silver plastic parts and finding aluminum stock that was close enough to the desired dimensions. This ended up being .125″ plate for the sides, and .500″ bars for the horizontal dividers. To make the side panels he placed the original plastic parts over the aluminum, marked the mounting holes with a punch, and used the belt sander to shape them.

[Dean] then put in a more screen accurate Moire disc, and went as far as to get real watch crowns for the buttons (just like the prop used in the show). In a particularly bold move, he even drilled out the center of watch crowns to install plastic light pipes for LED illumination.

Last year we saw a build that crammed a Raspberry Pi into the same Diamond Select tricorder toy to excellent effect. Now somebody just needs to combine both projects and they’ll have the slickest tricorder in the Alpha Quadrant.

Water Level Sensors, Alexa In A Fish, And Modular Synths During World Create Day

March 19, 2018 by Mike Szczys 3 Comments

On Saturday we saw a flood of interesting hacks come to life as more than 100 community organized meetups were held for World Create Day. Thank you to all of the organizers who made these events possible, and for everyone who decided to get together and hack.

Students Learning Hardware Design in Islamabad, Pakistan

The students at LearnOBots took on a slew of great projects during World Create Day like a smart medicine dispenser, electronics that control mains appliances, parking sensors, and a waste bin that encourages you to feed it. The group did a wonderful job of showing off their event by publishing several updates with pictures, stories, and video presentations from all the students. Nice work!