Saturday, 24 December 2011

research results

Coming out of last week's discussions with Elmar and Andy, we decided i needed to revisit the actual design process (specifically the sensemaking > synthesis)....  I designed a short internetsurvey to be deployed across a wide range of sites.  The thirty-two responses in the first two days indicate a high level of interest in the topic ("Do you need a Personal Assistive Robot Companion?").... with responses coming from various sectors such as education, commercial and the special needs community.
I tried to keep the survey questions as open ended as possible, without mentioning specific forms or tasks for the robot companion, to see what needs / possibilities the  different communities identify...
Of real interest to me is the disabled and elderly population, however the few forums i tried to join (to post the survey and initiate discussion) still have not got back to me after a week with registration information.... wondering if i answered all the rego questions properly ;) will keep trying ...
The interim results can be seen in the charts below... Click to zoom in....

Survey Results as of 14/10/11
So far, some interesting findings:
  • Majority (>75%) of respondents thought the idea "sounded cool" or "would use [a robot companion] all the time"..
  • Majority (~60%) of respondents would prefer to buy the device ready-made, with only 20% considering the d.i.y approach.  However Q3 & 4 prove the sampled population is competent with their digital devices and do d.i.ysometimes..  Most stated complexity / time would be the key factor in the decision not to build from plans.
  • frequently requested (50% respondents) was the idea of a domestic assistant - vacuum, mow, etc - now, these devices already exist (see: Roomba and associatedhacks).... but were so heavily requested in research that it provides a great incentive to open source....    dishes & laundry? hasn't anyone ever heard of a dishwasher? washing machine? maid??  these frequent requests lead me to believe that even in 2011, with certain demographics, the technology (and awareness thereof) is not as all-pervasive as perhaps we thought?
  • a number of respondents identified issues of ownership - with the most interesting ideas being the concept of 'robot-pooling' - or sharing one device between a number of people / neighbourhood / community
  • issues of empowering disabled / elderly individuals to be able to be more self-sufficient..... One very specific response from the disabled community strikes a resonant chord within me: "to go ego-less and be able to ask a robot for our special needs".....
  • many people wish to offload domestic and repetitive tasks to robots - cleaning and cooking etc.  Especially cooking surprises me.... this brings up so much philosophical debate - how can a robot taste(!>?) Does cooking require love embedded in?
  • Also in line with the Latitude study was the stated the desire for a more physical or tangible computing interface - for the device / information to not be trapped within a screen.... along the lines of SIRI
  • predominantly natural interactions (71%) & speech (84%) is the preferred interaction method, with some people asking for embedded personality whilst others desired the opposite! (perhaps this comes from a division in generations?  Mushkin also finds kids want personality…)
  • Regardless of physical world integration, the vast majority of participants in the Latitude study (83%) desired technologies capable of highly intuitive interaction. They requested responsive virtual environments, 3-D games, “homework help” computers, telepathy as a form of device input (4% of all submissions), etc.
  • also, alongside the natural interactions, the survey seemed to identify a certain desire for anthropomorphism with our devices -  the desire for a playfulness of interaction,for the device to interact with the user also....
  • backed up with Latitude findings: "Half of all participants visually represented themselves interacting with their invented technologies, supporting the “iGeneration” understanding of device as merely an extension of oneself." devices need to be individual interactive and customisable…. a unique identifier of the user...

    So far, the impressions i get from the research is of a great deal of interest in the project, with the majority of respondents indicating that the idea "sounds cool" or they would use a Personal Assistive Robot Companion "all the time"...
    My worry is that the desire for the d.i.y community to take a hold of the plans / open source information and modify these for personal requirements is not great - the complexity and cost of such a device puts it out of the reach of a large percentage of the surveyed audience towant to build themselves.
    Indeed, perhaps the best to hope from the creation of a wiki surrounding the tank/esky is the formation of a community of users around the concept... to further the ideation and possibilities afforded by the platform; provide support/maintenance for any devices and users out there already / about to be created; and to provide a sounding ground for new ideas...

tanSky

So here she is... after many sleepless nights and greasy dirty days in the workshop, the tank base is beginning to take shape:
As you can see, the 32mm timing belt track is auto tensioned and sits on independent torsion-style suspension...  This is such a delicate and temperamental procedure to get this exactly right so as to not throw tracks.... (i'm not quite there yet!)

EMD motor
The motors are EMDwheelchair motors from the dark ages, found rusting away on the roof of a mates storage shed, lovingly coaxed back into life over the last week... they draw approx 3.5 amps unloaded at 12v (though they are 24v, they merely run at half speed @12v)... still well fast enough for my testing and exploration purposes.  For operation in the field, however, the power system will be upgraded to 24v to moderate the current requirements (in accordance with ohm's law)...
H-Bridge is Robo Claw 2x10amp (underpowered for motors!)... This will be upgraded as finance permits to a 2x25 amp unit to provide ample headroom.  This is a very flexible unit, supporting a multitude of control options, liPo battery protection and high current / thermal cutout.  The added bonus of this unit over theSabretooth in the same price bracket is the Robo Claw supports 'dual channel quadrature decoding' - allowing for a closed-loop control system (accurate positional updates, movement control and feedback) when the vehicle goes autonomous... This will also allow the software to detect if the track is slipping or stalled and adjust power accordingly (reducing strain on the motors and power subsystem).  The ESC is currently set to RC mode, accepting standard servo pulses from 1000-2000 us (supplied by Arduino)...

Motor Controller and Microprocessor installed....
Currently control is via Wii Nunchuck (wired via i2c into Arduino).... with the very handy and very cheap breakout board from Solarbotics... the code library is taken almost directly fromwindmeadow labs
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Full Code for the project so far can be found here...
                                     --000--
Parts List:
[chassis] - we-ef street light frame
[axles] - 1/2" steel thread bar
[road wheels] - 32mm trolley wheels (bearings to be upgraded later)
[suspension] - steel flat bar + bolts & washers (see diag..)
[drive wheel / idler] - 2x timing belt cogs - to be covered in rubber for friction drive..
[tracks] - 2x 32mm timing belt (can be upgraded to 2 on each side if necessary for more traction / surface area)
[motor] - 2x EMD 1/4 Hp 24vDC wheelchair motors (electro-magnetic brake removed due to ESC regen braking)
[power] - 12v battery (Sealed Lead Acid, 27AH) - will be upgraded to 24v system, LiPo as finance permits..
[microprocessor] - Arduino Uno, powered via BEC on Robo Claw
[H-Bridge] - Robo Claw 2x10a - NEEDS to be upgraded to 2x25 - includes regenerative decel / charge circuit
[control] - Wii Nunchuck + SolarBotics breakout board
[misc] - 10 gauge wiring / 22 gauge wiring / 20A fuse / fuse holder / bolts / washers /springs / nuts / angle bracket
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Fritzing Diagram:
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Build Process Gallery:

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......... and lastly, the beast in action:
* Test Flight 001 * on VIMEO....

-&c

Tuesday, 11 October 2011

Market Research - What do Kids Want?


A little more grounding research..
Found this interesting interview on ABC….

A window into our technological future: what do kids want?

It’s an interview with Steve Mushkin, whose company (Latitude Insights) has been conducting research with children aged 12 and under in the US & Australia as to what they would want from the future of computing / devices…
Some of the most interesting findings are outlined in the interview; with the standouts being that kids imagined a much more physical world of computing – for example “being able to reach into the computer and touch objects” and others asking for “the computer to read their mind”….
Another really pertinent finding for me was a lot of kids anthropomorphise their computing experience – giving personality to both their devices and the internet.  They want to be able to “speak to and have friends with” their devices and software… This makes perfect sense to me as our devices integrate closer with our lifestyle, and the push for ubiquity increases.  It is the interactions with our devices that make them personal and indispensable.
This communication with devices interestingly extends to a number of kids expressing a desire to learn the language of computing, to learn to program environments and experiences (i.e games)… The possibilities afforded by the new open source robotics platforms (such as Lego Mindstorm & Vex) are beginning to bridge this gap between the virtual and physical; and providing a new arena for expression for the designers, inventors and end-users of tomorrow….


Further readings:
&c.

Monday, 10 October 2011

"Simpsons Did It"...

Rob sent me a great link just then....

Tokyo Institute of Technology Simple Personal Assistive Robot Follows You, Carrys Stuff For You

So it's been done, for sure.
But at leasr it shows theres *some* interest in the device, and possibly a market for it too (not that that is the direction intended for this project)....

Love the string guidance solution, it's so simple and neat - and such a familiar interaction (albeit not an entirely desirable one)...

Props to the Tokyo Institute of Technology..

More Grounding Research, a re-appraisal...

So after intense discussion with Andy, i realise i need to backpedal and learn the process of design also, not just the concept.

One of the key aspects i avoided was the wider audience grounding research - to really understand the audience and their desires, needs and considerations...

I started a survey to understand the community reaction to the idea, and to try and extend / repurpose / reanimate the device into something more universally useful and interesting... please, if there is any one out there that has the time it's a quickie... ten questions in ten minutes ;)

>> take the survey here <<


cheers!
&c

Friday, 9 September 2011

Grounding Research - The Presentation...

setting the scene.... stories from the bush....

rainbow serpent festival : a hotbed of experimental art and aesthetic

Robin Mutoid - Australia's anti hero - recycling & repurposing waste into  art & machine



look how far to carry the esky!!




some other examples out there.... simple, effective and functional..

this is the esky in question... 12v low amps compressor portable fridge... only 45$au!

the power train :) ford Laser wiper motors

The big, greasy box of parts.... no two of which are the same...



loyal, reliable and trustworthy.... a true friend!

Ideation: Some alternative ideas...The presentation

a.k.a "some alternative ideas"

#1....

lots of people watching movies / music on laptop, sub-optimal conditions...

why on earth would we bother???

a solution using head tracking.... and consumer parts

-failed because it was before its time, proprietary equipment and hideously expensive..


Reclaim the lanes festival... bringing it all together with radio transmitters/recievers.... communities as community..

idea #2...... 

the concepts of neuro-feedback - real designer drugs!

The technical.... NeuroSky headset~ 300$us

the possibilities.... (see original paper for references)


So its not all about the beer ;)

Preliminary Construction Sketches (will be revisited and refined)

How on earth to track a human?

Improving on a classic design? by having a large conveyor surface area the machine could go anywhere!