Hackaday Prize Entry: One-Handed, No-Look Keying

July 12, 2017 by John Baichtal 3 Comments

Chorded keysets can be found all over. For instance, Braille writers and court stenographers both use them. These chorded keyboards create each letter by pressing a combination of keys rather just one, making for much smaller keyboards [Christine] got the idea to create wearable rig that uses an accelerometer and vibe motor attached to each finger to serve as a one-handed, no-look, silent keyer. Forget small keyboards, this project does away with it altogether, relying on the accelerometers to keep track of your fingers.

[Christine]’s prototype consists of a Bluno BLE controller, a GSM module, and a few accelerometers and motors. The vibration motors not only provide haptic feedback so you know you tapped something, but also replays the chords so you can double-check what you’re writing.

Typically one-handed keyboards rely on button presses, with no-look use dependent on memorizing the layout—think of a 10-key pad. [Christine]’s project lets you type on any surface or none at all, making it handy for typing while you work with the other hand. It also has great potential for vision impaired users.

Tele-Haptic Proto-Sculpting: Using Robots To Teach

December 18, 2015 by James Hobson 7 Comments

Is it possible to effectively communicate tactile pedagogical messages in a heuristic tele-haptic proto-sculpting environment? Let’s try rephrasing that. What if you could use a robot to help teach someone a creative skill? Imagine guiding someone’s hand with a paintbrush. Now imagine guiding a bunch of peoples’ hands with paintbrushes, using a series of linked robots.

From [Morgan Rauscher] comes Art-Bot 2.0 — a creative learning tool that provides an entirely new way to teach painting, sculpting, or pretty much anything requiring dexterity or a tool. We covered Art-Bot 1.0 a few years ago, but in case you’ve forgotten, it was an eight-foot tall chainsaw wielding robot inside of an enclosure. Even children, using the remote, could play with chainsaws.

Constructed with the help of the Hexagram Institute, Art-Bot 2.0 is made up of three rugged servo driven robot arms. One is for the teacher, to guide movements, one performs those same movements on a work-piece, and a third robot arm allows a student to feel what is happening.

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Experimental Theater Helps Field Test Haptic Navigation Device

September 4, 2015 by Dan Maloney 7 Comments

The “absorbed device user” meme, like someone following Google Maps on a smart phone so closely that they walk out into traffic, is becoming all too common. Not only can an interface that requires face time be a hazard to your health in traffic, it’s also not particularly useful to the visually impaired. Haptic interfaces can help the sighted and the visually impaired alike, but a smart phone really only has one haptic trick – vibration. But a Yale engineer has developed a 3D printed shape-shifting navigation tool that could be a haptics game changer.

Dubbed the Animotus by inventor [Ad Spiers], the device is a hand-held cube split into two layers. The upper layer can swivel left or right and extend or retract, giving the user both tactile and visual clues as to which direction to walk and how far to the goal. For a field test of the device, [Ad] teamed up with a London theater group in an interactive production of the play “Flatland”, the bulk of which was staged in an old church in total darkness. As you can see in the night-vision video after the break, audience members wearing tracking devices were each given an Animotus to allow them to navigate through the interactive sets. The tracking data indicated users quickly adapted to navigation in the dark while using the Animotus, and some became so attached to their device that they were upset by the ending of the play, which involved its mock confiscation and destruction.

Performing art applications aside, there’s plenty of potential for haptics with more than one degree of freedom. Imagine a Bluetooth interface to the aforementioned Google Maps, or an electronic seeing-eye dog that guides a user around obstacles using an Animotus and a camera. There’s still plenty of utility in traditional haptics, though, as this Hackaday Prize semi-finalist shows.

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Hackaday Prize Semifinalist: Tact Tiles

August 31, 2015 by Brian Benchoff 2 Comments

There are 3.6 Million deafblind people in the world, and by far their greatest problem is one of communication. For his entry for the Hackaday Prize, our own miracle worker on hackaday.io is creating a system that enables haptic communication for a variety of devices. It’s called Tact-Tiles, and instead of creating a single device, [Anderson] is building an entire system that enables a multitude of communication devices for deafblind people.

The basic unit of the Tact Tile system is a small, touch sensitive vibrating pad. These tiny PCBs can be fitted to just about anything, including a wired glove, or whatever haptic interface anyone can dream up. The core of the device is a small PCB that can control 32 of these vibrating pads, and communicates with a smartphone or computer over a Bluetooth connection.

With a little bit of software, the Tact Tiles can be configured an any way imaginable, with mapping individual tiles to letters of the alphabet, mapping gestures to letters, or any combination in between. [Anderson] has a great video demoing the possibility of his device, you can check that out below.

The 2015 Hackaday Prize is sponsored by:

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Hackaday Prize Semifinalist: Haptic Navigation

August 26, 2015 by Brian Benchoff 23 Comments

For his project entered in the Hackaday Prize, [Neil] is working on a navigation aid for the blind. He’s calling his device Pathfinder, and it’s designed to allow greater freedom of motion for the disabled.

Pathfinder is a relatively simple device, with a cheap, off the shelf ultrasonic distance sensor, an ATMega, and a few passives. On its own, the ultrasonic distance sensor is only accurate to about 5%. By incorporating a temperature sensor, [Neil] was able to nail down the accuracy of his sensor to about 1%. Impressive!

For the machine to human interface, [Neil] chose haptic feedback, or small vibration motors tucked away inside a wristband. It’s by far the easiest way to add the output needed, and with a haptic motor driver, it’s easy to add specialized drive patterns to the vibration motor

You can check out [Neil]’s quarterfinal entry video for the Pathfinder below.

The 2015 Hackaday Prize is sponsored by:

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Trace Your Book Or Kindle With The FingerReader

March 17, 2015 by Theodora Fabio 16 Comments

[Roy Shilkrot] and his fellow researchers at the MIT Media Lab have developed the FingerReader, a wearable device that aids in reading text. Worn on the index finger, it receives input from print or digital text and outputs spoken words – and it does this on-the-go. The FingerReader consists of a camera and sensors that detect the text. A series of algorithms the researchers created are used along with character recognition software to create the resulting audio feedback.

There is a lot of haptic feedback built into the FingerReader. It was designed with the visually impaired as the primary user for times when Braille is not practical or simply unavailable. The FingerReader requires the wearer to make physical contact with the tip of their index finger on the print or digital screen, tracing the line. As the user does so, the FingerReader is busy calculating where lines of text begin and end, taking pictures of the words being traced, and converting it to text and then to spoken word. As the user reaches the end of a line of text or begins a new line, it vibrates to let them know. If a user’s finger begins to stray, the FingerReader can vibrate from different areas using two motors along with an audible tone to alert them and help them find their place.

The current prototype needs to be connected to a laptop, but the researchers are hoping to create a version that only needs a smartphone or tablet. The videos below show a demo of the FingerReader. For a proof-of-concept, we are very impressed. The FingerReader reads text of various fonts and sizes without a problem. While the project was designed primarily for the blind or visually impaired, the researchers acknowledge that it could be a great help to people with reading disabilities or as a learning aid for English. It could make a great on-the-go translator, too. We hope that [Roy] and his team continue working on the FingerReader. Along with the Lorm Glove, it has the potential to make a difference in many people’s lives. Considering our own lousy eyesight and family’s medical history, we’ll probably need wearable tech like this in thirty years!

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Mobile Lorm Glove Puts Texting Back Into Everyone’s Hands

March 16, 2015 by Sonya Vasquez 2 Comments

If you’ve been killing time texting or chatting with your pals via smart phone, odds are pretty good that you’re not giving much thought to the two senses that make it happen: your sight and your hearing. Those who are deafblind, however, cannot participate in these activities; and for many, the remote communication that most of us enjoy with our phones simply isn’t possible. Enter Berlin University of the Arts Design Research Lab. Here, they’ve developed the Mobile Lorm Glove, a haptics device that enables two-way remote communication via smart phone.

For the deafblind, Lorm is the tactile technique for communication. Lorm is a series of hand-tracing gestures that map to characters of the alphabet. To communicate with others, the gloved user can trace Lorm directly onto the pressure-sensitive inputs on the palm of the hand. To receive messages, small vibration motors on the back of the hand vibrate to indicate the message encoded in Lorm.

Originally, to communicate with the deafblind, we must first learn Lorm. With the Mobile Lorm Glove, however, we need only know how to send text messages, and the Lorm-decoding is handled with a look-up table running on our classic Atmega328 microcontroller. For the sharp-eyed, the back-side of the glove seems limited in its capability to transcribe continuous finger traces into discrete motor vibrations. However, with four shift-registers and 32 levels of motor-intensities, the designers address each motor with a technique called “funneling illusion” where continuous movement is simulated by gradually changing the intensity from motor to motor. For more tricks and details, take a look at their conference paper.

By wearing the glove, everyday communication can be made far easier with anyone with a smart phone. We’re jazzed that just a Bluetooth module, an Atmega328, and a collection of pressure sensors and motors can enable any cell phone user to circumvent the learning curve and open up a new conversation.

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45 Articles

Hackaday Prize Entry: One-Handed, No-Look Keying

Tele-Haptic Proto-Sculpting: Using Robots To Teach

Experimental Theater Helps Field Test Haptic Navigation Device

Hackaday Prize Semifinalist: Tact Tiles

The 2015 Hackaday Prize is sponsored by:

Hackaday Prize Semifinalist: Haptic Navigation

The 2015 Hackaday Prize is sponsored by:

Trace Your Book Or Kindle With The FingerReader

Mobile Lorm Glove Puts Texting Back Into Everyone’s Hands

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