Fingerling Disemboweled For Your Entertainment

December 28, 2017 by Tom Nardi 21 Comments

Due to the graphic nature of this post, small children and the elderly may want to leave the room. One of the hottest toys this holiday season has been gutted like a fish so that we may better understand the nature of its existence. Or maybe just what kind of sensors and motors the craftsmen over at WowWee managed to cram into a “robot” with an MSRP of only $15 USD.

[Josh Levine] mercilessly tears a Fingerling Monkey limb from limb on his blog, and points out some interesting design decisions made. While some elements of the toy are rather clever, there’s a few head-scratchers to be had inside the Fingerling. It’s interesting to see the final results of a decision process that had to balance the relatively rough life such a toy will live with the ever crucial cost of production.

The eyelids are particularly well thought out, operated by charging a coil under a magnet which is embedded in the plastic. Opening and closing the eyelids without a separate motor or gearbox is not only easier and cheaper, but prevents the possibility of damage if a child attempts to force open the eyes or otherwise manipulate the mechanism.

Other cost saving measures include the use of foil tape as a capacitive sensor, and simple ball-filled tilt sensors to detect orientation rather than an expensive accelerometer.

Interestingly, other parts of the toy seem overengineered in comparison. A cam and limit switch are used to detect when the Fingerling’s head has turned to its maximum angle, when it would have been cheaper and easier to simply detect motor stall current.

If you’re interested in seeing what makes popular toys tick, we’ve got a number of plaything tear downs which are sure to keep you satiated until the next big holiday toy rolls around.

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Hacklet 105 – More Mind And Brain Hacks

April 30, 2016 by Adam Fabio 7 Comments

A mind is a terrible thing to waste – but an awesome thing to hack. We last visited brain hacks back in July of 2015. Things happen fast on Hackaday.io. Miss a couple of days, and you’ll miss a bunch of great new projects, including some awesome new biotech hacks. This week, we’re checking out some of the best new mind and brain hacks on Hackaday.io

We start with [Daniel Felipe Valencia V] and Brainmotic. Brainmotic is [Daniel’s] entry in the 2016 Hackaday Prize. Smart homes and the Internet of Things are huge buzzwords these days. [Daniel’s] project aims to meld this technology with electroencephalogram (EEG). Your mind will be able to control your home. This would be great for anyone, but it’s especially important for the handicapped. Brainmotic’s interface is using the open hardware OpenBCI as the brain interface. [Daniel’s] software and hardware will create a bridge between this interface and the user’s home.

Next we have [Angeliki Beyko] with Serial / Wireless Brainwave Biofeedback. EEG used to be very expensive to implement. Things have gotten cheap enough that we now have brain controlled toys on the market. [Angeliki] is hacking these toys into useful biofeedback tools. These tools can be used to visualize, and even control the user’s state of mind. [Angeliki’s] weapon of choice is the MindFlex series of toys. With the help of a PunchThrouch LightBlue Bean she was able to get the EEG headsets talking on Bluetooth. A bit of fancy software on the PC side allows the brainwave signals relieved by the MindFlex to be interpreted as simple graphs. [Angeliki] even went on to create a Mind-Controlled Robotic Xylophone based on this project.

Next is [Stuart Longland] who hopes to protect brains with Improved Helmets. Traumatic Brain Injury (TBI) is in the spotlight of medical technology these days. As bad as it may be, TBI is just one of several types of head and neck injuries one may sustain when in a bicycle or motorcycle accident. Technology exists to reduce injury, and is included with some new helmets. Many of these technologies, such as MIPS, are patented. [Stuart] is working to create a more accurate model of the head within the helmet, and the brain within the skull. From this data he intends to create a license free protection system which can be used with new helmets as well as retrofitted to existing hardware.

Finally we have [Tom Meehan], whose entry in the 2016 Hackaday Prize is Train Your Brain with Neurofeedback. [Tom] is hoping to improve quality of life for people suffering from Epilepsy, Autism, ADHD, and other conditions with the use of neurofeedback. Like [Angeliki ] up above, [Tom] is hacking hardware from NeuroSky. In this case it’s the MindWave headset. [Tom’s] current goal is to pull data from the TAGM1 board inside the MindWave. Once he obtains EEG data, a Java application running on the PC side will allow him to display users EEG information. This is a brand new project with updates coming quickly – so it’s definitely one to watch!

If you want more mind hacking goodness, check out our freshly updated brain hacking project list! Did I miss your project? Don’t be shy, just drop me a message on Hackaday.io. That’s it for this week’s Hacklet, As always, see you next week. Same hack time, same hack channel, bringing you the best of Hackaday.io!

Shocking Operation Makes Sure You Have Skin In The Game

March 23, 2013 by Mike Szczys 4 Comments

operation-shocks-you

Odds are you played the game of Operation when you were a kid. The classic electronic toy challenges you to use a tethered tweezers to extract plastic pieces without touching the sides of the holes they’re hiding in. This upgrade makes the challenge more interesting for a grown-up audience. If you touch the sides you won’t hear a jarring sound, you’ll get a painful shock!

The modification starts by clipping off the melted plastic portions that hold the paperboard face plate on the game. From there the original electronics are completely removed. We think this a bit of a mistake as we’d still like spectators to hear the sound as the player gets a shock. But we digress. The circuit board from a disposable camera is patched into the game. A wrist band forms an electrical connection with your body, providing a path for the camera’s flash capacitor to discharge if you happen to touch the sides with the tweezers.

This write-up is missing one important thing: video of someone getting shocked. [Psycosisnine] promises to add some soon, but for now you’ll just have to fall back on our absolute favorite Mindflex shock project.

Fashion Leads To Mind-controlled Skirt-lifting Contraption

March 16, 2012 by Mike Szczys 5 Comments

This must be an example of when worlds collide. Who would have thought the geekery of Mindflex and Arduino could make its way into high fashion? But sure enough, this dress transforms based on the mental concentration of the model (must resist urge to crack joke here).

Details are a bit sparse, but you can get a look at the prototype in the video after the break. There’s no nudity; a larger skirt covers a more plain version. That over-skirt is connected to some type of motor system which is driven by an Arduino. When the EEG sensor in the hat detects a certain level of brain wave activity, the outer skirt is lifted and pulled to the back of the outfit, exposing the tighter version beneath.

[Lorenzo] wrote in to share the link to this garment hack. He mentions that a Lilypad and Mindflex are at work here. Looking more into the artist’s website we find this isn’t the only tech-wear produced. There’s a maternity outfit which can sense the baby’s beating heart, and harvest other data about both mother and baby, as well as a few others.

We can’t think this has much future as an everyday outfit, but more utilitarian versions are out there so we think the sky’s the limit on wearable tech.

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Live Out Your Inner Animist With Animatronic Cat Ears

February 21, 2012 by Brian Benchoff 43 Comments

While having a great white shark as your spirit animal may sound cool, we’ve found walking around in public wearing a gigantic set of mechanical jaws to be a bit of a hindrance. [abetusk] doesn’t have that problem; he can wear his awesome animatronic cat ears anywhere he pleases.

The build was inspired by these extremely Japanese animatronic ears loaded with EEG hardware to read the emotional state of the wearer. [abetusk] decided that tearing apart some brain scanning hardware was too much work for not enough benefit, so he decided servos controlled by push buttons would be just fine.

On the electronic side of the build, servos attached to a head band are controlled by an ATtiny13. A single button goes through three states for the ears: a long button press is surprise, a tap followed by a long hold is angry or sad, and tapping three times is an ‘ear wink.’ All of the code is up on GitHub, and you can check out these cat ear emotions with [abetusk]’s lovely assistant in the video after the break.

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Arduino Based Biofeedback Unit

May 25, 2011 by Mike Szczys 4 Comments

[Michael Gerstenmayer] has been very successful in developing a biofeedback system. He’s based the build around an Arduino and started adding different chunks to the project to develop a full-featured unit. It can take your temperature (with an IR sensor…. not the hard way), measure your galvanic skin response (conductance), and produce feedback based on this data. Interestingly enough, he built a peripheral vision feedback system based on the glasses frames seen above. They have an LED on each side which are illuminated based on the sensor data.

By using the Arduino’s USB connection the data can also be processed by a PC. [Michael] spent some time working with an open source program called BrainBay to gather and map the stream from the sensors.

We enjoyed reading about the build, but there’s no information about what he’s got planned for this project. That shouldn’t stop you from setting up your own rig and using it as a lie detector, or for the devilish purposes we’ve seen in the past.

MindWave Is Developer (read: Hacker) Friendly Mind Control

April 22, 2011 by Mike Szczys 3 Comments

Here’s a setup to control a servo motor with your mind. [Danny Bertner] made this project happen by interfacing a MindWave headset with an Arduino. You might wonder what’s the big deal about that since we’ve covered quite a few mind control hacks that work this way? So far, the majority of those hacks used the Mindflex toy (to be fair there were several using the Force Trainer as well), which depends on a chip made by the company that is responsible for the MindWave. Both the Mindflex and the Force Trainer were reverse engineered to access the stream of data coming in from the EEG sensors. But NeuroSky is embracing the urge to mess with their products by offering developer tools.

[Danny] took advantage of these resources, using the comany’s own guide to interfacing with an Arduino (PDF). The quick clip after the break shows his finished project, grabbing data from the USB dongle that comes with the headset, converting it to the necessary levels for the Arduino, then processing the signals for display on and LED bar graph.

We can’t help but chuckle about the warranty-voiding disclaimer at the top of the PDF guide.

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