Instructables
Samuel Taylor Coleridge said, "My eyes make pictures, when they are shut."
Well, my friend Tony's eyes write graffiti and they are wide open.

Behold the latest ocular assault weapon from the Graffiti Research Lab, openFrameworks, The Fat Lab and The Ebeling Group: The EyeWriter. It is a low-cost eye-tracking apparatus + custom software that allows graffiti writers and artists with paralysis resulting from Amyotrophic lateral sclerosis to draw using only their eyes.



This instruction set details how to make your own solderless eyetracker for only $50 dollars using a hacked PS3 Eye and a cheap pair of sunglasses.

"Art is a tool of empowerment and social change, and I consider myself blessed to be able to create and and use my work to promote health reform, bring awareness about ALS and help others"
-- Tony Quan, aka Tempt One

For more information on the story behind the EyeWriter, TemptOne and more, check out http://eyewriter.org.

For more info on ALS click here.

For more words directly from Tempt One click here.

Programmers, engineers, ALS patients/family-members, medical professionals and projection artists! If you're interested in becoming part of the EyeWriter development team contact us here.

The EyeWriter Development Team is:

TemptOne
Graffiti Research Lab
openFrameworks
The Ebeling Group
FAT Lab
Zach Lieberman
James Powderly
Evan Roth
Chris Sugrue
Theo Watson
Keith Pasko
LM4K
Eleanor Dunk
Jamie Wilkinson
Greg Leuch

With special thanks to the Not Impossible Foundation and Sven Travis from Parsons Communication, Design + Technology
 
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Step 1: EyeWriter System Requirements

Picture of EyeWriter System Requirements
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The goal of the hardware component of the EyeWriter project is to make the most simple and inexpensive eye-tracking head-set possible to use with the "EyeWriter" software suite. Obviously, there are numerous ways to make eye-tracking hardware. Many of these designs, especially those produced for academic research projects (Open Eyes), have already been published openly on the internet. There are also commercial products available -- costing in the range of ~$20,000 US or more-- that are specifically designed to enable people with ALS to communicate using their eyes. We are not in the business of re-inventing these systems. This project is an attempt to address a gap in the development of low-end eyetracking systems, ie to make a super-cheap, eye-tracker that could be made by almost anyone, almost anywhere. Our "EyeWriter" system has several specific design limitations that were meant to emphasize low-cost and ease of construction over other aspects of performance, robustness and appearance. The specific parts and tools you use to build your own "EyeWriter" will depend on your ability, location, financial resources and creative je ne sais quoi (surely you can do better than us -- we're American thugs), but do allow the following design specification to help you to seamlessly connect your hardware to the EyeWriter software and to explain the ethos of the project.

Our functional design specifications are as follows:

1. The EyeWriter should be as inexpensive as possible
2. The fabrication and assembly of the system should require only common hand tools
3. Whenever possible components and parts should be available for purchase locally versus online
4. The camera should produce 640 x 480 NTSC video
5. The camera should be sensitive to near-field IR light
6. The camera should not auto-iris (or auto-iris should be disabled in the camera's driver).
7. IR LEDs should be used to illuminate the pupil

Beyond that its up to you... this instruction set details a solderless variation of the EyeWriter that uses a hacked PS3 Eye and a pair of stunnas we bought on Venice Beach and suggests other possible EyeWriter configurations.

Step 2: Tool and Parts List

The following part and materials list details the components and tools we used to make a solderless EyeWriter:

Parts:

1x IR sensitive Camera (without auto-iris)
-- PS3 Eye. $39.95 US (using this camera system removes the need for an additional video capture card)

1x camera-lens mount
-- you can use the lens mount that comes with the PS3, but it is glue together and difficult to separate
-- Lens holder, M12x0.5, 15.5, centered $6.00
this is the cheap one, but it requires some modification to match PS3 through-hole footprint
-- more expensive $20.00

1x cheap glasses
-- really any cheap sunglasses will do... or try these. ~$5.00

aluminum wire
-- 9-gauge wire $7.99

3x alligator clips
-- Radio Shack $7.00

a pack of wire-ties
-- Radio Shack $2.49

2x IR LEDs
-- Radio Shack $1.99
tape

1x 8mm camera lens
-- Fixed IRIS Lens Set for Webcams and Security/CCTV Cameras (6-Lens Pack) $14.91

IR wratten
-- infrared filter gel $26.99
Cheaper DIY version of IR filter include cutting a piece of film out of a floppy disk or using unexposed and developed photographic film

battery holder
-- Radio Shack AAA holder $1.99

Tools:

small screw driver set
-- 7ps set $14.95

scissors
--steal them from a kindergarten

some other optional parts and tools if you want to get fancy:
electrical junction connectors
screws
drill
soldering iron, solder, flux,
shrink tube
tap and tap handle
perforated circuit board
dremal
a video capture card (if not using a PS3 Eye)
-- we have successfully used the Pinnacle Dazzle DVD recorder (it does require a serial code on the mac)

Step 3: Get some Stunnas!

Picture of Get some Stunnas!
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We got this model on Venice Beach for $4 US. You can get yours at the truck stop, thrift store or Louis Vuitton.

Other models include:
black hipster frames
Kanye Shades

Step 4: Make the Camera Arm

The camera arm needs to hold the camera rigidly in front of one eye, but also be flexible, positionable and easy to manufacture.

The best material we have found in terms of rigidity, flexibility, machinability, cost and weight is 9-gauge aluminum wire. This type of wire is often used as a support structure inside clay and plaster sculptures and can be found at art supply, hardware, craft and DIY stores. It often has a plastic coating over the aluminum, which is helpful in our case in order to electrically isolate the camera arm from the camera circuit board. If the wire you use is not insulated, you can wrap it with a few strips of electrical tape.

To machine aluminum wire you can use a pair of tin snips or simply bend the wire back and forth repeatedly until it breaks.

1) Break off a long piece of wire 20 to 30 cm in length

Step 5: Attach the camera arm to the glasses

The easiest way to attach the camera arm to the glasses frame is to simply use wire ties to secure the wire along the arm of the glasses. We use around 6-8 small wire-ties.

A more elaborate method involves using aluminum electrical connectors. These can be found at hardware and DIY stores. This method requires a drill, a tap, a tap handle and takes about 20 minutes.

1) drill two appropriately-sized holes for tapping into the aluminum connector. The size of the hole will depend on the size of the screw you intend to use. We used a 4-40 screw. To create a hole ready for a 4-40 tap you would use a #43 drill bit (3/32nd). You can use the tap and die chart linked below as a reference is you intend to use a different-sized screw.

http://www.korit.com/tapndrill.htm

2) use the holes in the aluminum connector as a reference to mark where the holes need to be drilled in your glasses frame and then drill two holes that would accommodate a 4-40 screw (a #38 drill bit).

3) using the tap handle and a 4-40 tap, you should tap the aluminum connector. Remember to move slowly, use machine oil (or olive oil if you dont have professional machine lubricants) and clean the hole before trying to insert the screw

4) you can now assemble the pieces. Use washers, lock washers and lock-tite in order to securely attach the connector to the frame. The connector we used has a flat-head set screw that allows us to screw down the aluminum camera arm and secure it tightly to the glasses.

Step 6: Hack the PS3 Eye

There are a number of videos onine that explain how to mod a PS3 eye camera, the best being the crew at Peau Productions.

How to take apart the PS3 Eye and remove the IR blocking filter:


How to instal a visible light filter using a floppy disk:


These videos document the process of hacking the PS3 Eye pretty thoroughly. But, In our case we need to use a lens with a shorter focal length than the one provided with the PS3, so some extra hacking is in order. To recap and expand on how to mod the PS3 Eye for use with the EyeWriter software:

1. unscrew the four screws on the back of the PS3 eye
2. Crack open the case using a small flat head screw driver
3. Unscrew the screws that mount the camera circuit board to the plastic housing
4. Unscrew the camera lens mount
5. Either a) throw away the PS3 Eye lens mount and lens and use one of the lens mounts linked to in the parts list (and the 8mm lens from our lens pack) or b) if you want to repurpose the PS3 lens mount you need to dig the IR light filter (as shown in the video).
6. If you want to use the original PS3-native lens mount, you will need to separate the PS3-native lens from the mount, which is attached with some industrial glue. To do this you need to scratch away the glue around the outside lip of the mount. This is hard to do and requires some patience and some luck. You will need to scratch and try to turn the lens to unscrew it. Keep repeating this process until the lens separates and can be unscrewed. If you destroy the lens (which happened to us about half the time) you will be forced to use one of the lens mounts linked to in the parts list.
7. Cut your IR wratten down to fit inside the lens mount
8. If you have successfully separated the PS3 lens from the PS3 lens mount then just screw the PS3 lens mount back onto the camera circuit board. If you have not succeeded in separating the lens from the mount, then screw the new lens mount on the camera circuit board.
9. screw in the 8mm lens into the lens mount

Watch the video and look at the included photos for more tricks and information on how to successfully hack the PS3 Eye.

Step 7: Attach the Camera

To attach your newly modified PS3 Eye camera to the wire armature you will need wire ties and some type of small, insulated substrate that will provide more rigidity to the camera/armature assembly. For our prototype we used a small (3 in x 1 in) piece of hard rubber. You can also use a piece of wood, half of a pop cycle stick, or any other sturdy, insulated material.

1. put the rigid substrate in between the camera and the wire armature. The camera should be pointed toward the eye of the glasses.
2. use 4 wire ties to firmly attach all three pieces together.

You can put a small length of double sided tape between the rigid substrate and the wire armature to make putting the three pieces together and to ensure a more secure assembly. The camera should still be adjustable in terms of pitch and may require occasional adjustments (or even re-assembly) between uses.

Step 8: Lite it up!

When you illuminate the eye with IR light and observe it through an IR sensitive camera with a visible light filter, the iris of the eye turns completely white and the pupil stands out as a high-contrast black dot. This makes tracking the eye much easier. In order to provide some IR illumination, we have made a quick and dirty IR LED circuit using alligator clips, IR LEDs and a 2x AAA battery holder.

The circuit is a simple 3 volt series circuit with two IR LEDs and a power supply (See the napkin circuit drawing below for more details). Connect an alligator clip, preferably a red one,  to the power lead from the battery holder. Connect the other end of the alligator clip to the positive leg of one of the IR LEDs. Connect another alligator clip, preferably white or yellow, to the negative leg of the same IR LED and the positive leg of the second IR LED. Finally, connect an alligator clip, preferably black, to the negative leg of the second IR LED. The other end of the black alligator clip should be connected to the negative lead from the battery holder.

You can test to see if the IR LEDs are working by looking at them using most typical point and shoot cameras. If they are sensitive to IR light, you should see a soft glow coming from both LEDs.

Wrap up the excess cable, wire tie the alligator clips to the arm of the glasses and the camera armature. You can use wire ties to attach the alligator clips to the front of the camera. Bend the IR LEDs so they are pointing in the same direction as the camera, bent in toward the eye. Make sure the LED legs are not touching each other or any part of the camera circuit board. You can use electrical tape to help keep all metal components electrically isolated from one another. You will likely have to adjust the IR LEDs once you are looking at the eye in the EyeWriter software in order to get a strong illumination that removes shadows created by the eyelid, lashes and camera frame.

Step 9: Connect to the EyeWriter Software

Picture of Connect to the EyeWriter Software
The EyeWriter software is two parts — an eye-tracking software designed for use with our low-cost glasses, and a drawing software designed for drawing with eye movements. The source code for the project is currently being hosted at: http://code.google.com/p/eyewriter.

The software for both parts has been developed using openframeworks, a cross platform c++ library for creative development. In order to compile and develop the EyeWriter source code, you will need to download openframeworks (pre release v0.06). Documentation, setup guides and more information can be found at http://openframeworks.cc.

For more info on the EyeWriter software click here.

PS3 Eye drivers & QT components

In order to use the PS3 eye you will need to download a driver/component and install it.

For a mac you will need to download the quicktime component here and put it in your-hardrive//Library/QuickTime.

To learn more about using it on a PC click here.

Video Capture

Alternatively, if you plan to use another type of NTSC camera, you will beed a video capture card. We have successfully used the Pinnaccle Dazzle USB DVD recorder. To use this device you will need to install a PC driver or use VideoGlide. This software does require a user-license which costs roughly $25.00 dollars

Eye-Tracking Software

The eye-tracking software detects and tracks the position of a pupil from an incoming camera or video image, and uses a calibration sequence to map the tracked eye/pupil coordinates to positions on a computer screen or projection. Note that we use the GSL (gnu scientific library) for calibration, which is GPL, thus the eye tracking source code is GPL.
The pupil tracking relies upon a clear and dark image of the pupil. The diy glasses we designed use near-infrared leds to illuminate the eye and create a dark pupil effect. This makes the pupil much more distinguishable and, thus, easier to track. The camera setting part of the software is designed so the image can be adjusted with brightness and contrast to get an optimal image of the eye.
The calibration part of the software displays a sequence of points on the screen and records the position of the pupil at each point. It is designed so that a person wearing the glasses should focus on each point as it is displayed. When the sequence is finished, the two sets of data are used to interpolate where subsequent eye positions are located in relation to the screen.

The following software tutorial walk-through will help you to better understand the tracking interface.

eyewriter tracking software walkthrough from thesystemis on Vimeo.

Eye-Drawing Software

The eye-drawing software is designed to work with the EyeWriter tracking software as well as commercial eye-trackers such as the MyTobii. It is currently a separate application from the EyeTracker, but we will also post a combined version that shows the two working together.
The tool allows you to draw, manipulate and style a tag using a time-based interface so that triggering buttons or creating points for drawing is achieved by focusing on the position for a given amount of time. Tags and tag data can also be uploaded via FTP and HTTP Post.

The following software tutorial walk-through will help you to better understand the drawing interface.

EyeWriter - Drawing App walkthrough from Theo Watson on Vimeo.

Step 10: EyeWriter installation

The EyeWriter interface can be used to create drawings on screen, or using a small projector, you can create drawings on the wall in a hospital room. We have also used the EyeWriter software in conjunction with a special version of the Laser Tag software to project EyeTags at large scale in public space. The following steps and links will help you to create an EyeWriter installation catered to your needs.

On-Screen Drawing

In order to create on-screen drawing you will simply need to follow the steps featured in the previous step. This will work with both the mytobii system software as well as the EyeWriter hardware and software suite.

Co-located and Projected Drawing

In order to create drawing using the EyeWriter hardware/software or the EyeWriter software/Mytobii system, you will need a digital projector and a projection screen or surface. You will need to calibrate the EyeWriter user to the projection surface. We have experimented with using a regular bed sheet as a projection screen successfully.

Remote Drawing and Projection

To do remote projection you will need two computers, both connected to the internet, a mobile broadcast system connected to one computer and the Laser Tag OSC receive software (super-beta). For more information on mobile broadcasting and projection bombing check out GRL's projection bombing tutorial on instructables and the MBU diagram below. We have also used Sprint wireless broadband cards to create wireless remote connection between the two computers.

We are no currently supporting the Laser Tag OSC receive software, but you are welcome to download it and hack around with it. In order to project the GML (graffiti markup language) tags you will need to drag the GML data into /bin/data and rename the file tempt.gml. We will soon release the full EyeWriter send/recieve software with instructions. For more GML tags, visit Evan Roth's unreleased beta site http://000000book.com/ and download the more GML tags here. Stay tuned for more from GRL, Fi5e and the EyeWriter team and if you're interested contact the EyeWriter team and become a developer/collaborator.

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Anyone able to get this to work with Mac OS 10.9? Thanks!

trecnano2 months ago

Hello,

I 'm making a research project about EyeWriter and I'm having some problems.It doesn't find my pupil, I've the image of my eye but the programme marks my pupil over my eyelid, why ? can you help me ?

Thanks,

Trec

sshamsul3 months ago

hi. Is the ps3 eye camera compatible with LabView? Im currently doing the same project but with LabView.

inZet5 months ago

I was able to compile the EyeWriter 1.0 software on OSX 10.6.8 Snow Leopard, XCode 3.2.5, using OF 0.8

in file inputManager.cpp at line 75 change vidGrabber.grabFrame() and vidPlayer.idleMovie() to vidGrabber.update()

You should end up with code like this:

if (mode == INPUT_LIVE_VIDEO){

// change from vidGrabber.grabFrame();

vidGrabber.update();

bIsFrameNew = vidGrabber.isFrameNew();

} else {

// change from vidPlayer.idleMovie();

vidPlayer.update();

bIsFrameNew = vidPlayer.isFrameNew();

}

binarybosses5 months ago

That's some pretty trippy stuff. And then I was glad to see that the end product was being used for a good cause. Very cool.

visitlynn6 months ago

Hi Everyone,

I built an eyewriter and downloaded the software but have no idea where to start. I watched the videos but I don't have programming skills... is anyone available for a walkthrough on the very basics?

Also, is it possible to use the v2 code for the v1 hardware? Thank you

tuki31 year ago
Does anyone know how to use or run the eye drawing software on windows? i need it now! thanks!
chariama tuki38 months ago
Hi,i also have some trouble in running this software on windows, can you run it now? THANKS!
emdarcher1 year ago
Do you know if this would work for people with really bad cerebral palsy?
I have a cousin who has it since he was a few months old, and his parents neglect to get him anything that could truly enable him to communicate, learn and grow. I really want to give him a chance to have some control. I know there are things like Eagle Eyes that do this but are very expensive.
qquuiinn1 year ago
why is it that most cool hackable things come from game consoles? wiimote, SNES controller, PS2 joysticks, PS3 eye, nun chuck, etc
This is awesome! As an artist, stories like this really hit hard.
trasancos1 year ago
From the research I've done so far, IR-Leds come with many different Radiant Intensity and Angles at the 875nm range, some of which can damage the eye. Any help would be appreciated.
Mandotron1 year ago
What wavelength IR is safe to use?
Mandotron1 year ago
Hi Guys, im really struggling to get the lens - M12x0.5 15.5 centred.

Does anyone from the UK know of a supplier? I have found it in USA but postage is $90.
tuki31 year ago
Does anyone know how to use or run the eye drawing software on windows? i need it now! thanks!
redwards92 years ago
I downloaded the macam and the eyewriter software and installed it on my macbook pro. Both programs work but I can't figure out how to make the eyewriter use the PS3 cam instead of the built-in cam. Any way to make this work on a macbook pro or any other mac with a built-in cam?

Also were can I download the drawing app and is there a mac version?
redwards9,

Have you figured out how to make the eyewriter use the PS3 cam instead of the built-in cam? I have the same problem and will be grateful if you share the solution (if you have found it!)
I have not unfortunately. I have tried sending out other emails but no response. If I get it figured out, I'll post it.Please do the same.

Thanks!
redwatds9,

I have since figured this out! (I work with Windows 7. I am sure this will work with Windows XP too)

Do NOT connect your PS3 Camera to the laptop/ PC

Go to Control Panel->System->Device Manager

You will see your built-in camera listed here under Imaging Devices. (Mine was Sony Visual Communications Camera). Right click on this and select "Disable".

With the Device Manager open, plug your PS3 Camera to the USB Port

You will see that as you plug on the PS3 Camera, a new device gets displayed as a new device. (In my case this came listed as "PS3 Eye Camera" under a new group named "CodeLabs DeVices". If You don't see this, try unplugging/ plugging on the camera).

To calibrate the PS3 Camera, I used the software temptTracker tracker that I downloaded and extracted in the folder temptTracker_020_cb. Hope you too have downloaded this.

Go to temptTracker_020_cb->bin->data->settings. Open the file xml file inputSettings using NotePad. In this file there is a line to specify the DeviceId (Between angular brackets with DeviceId and /DeviceId)

I had to try different device IDs in the line 0. (In my case 2 worked!). Thus this line was changed to 2. After each trial with a new device number, save the file in NotePad.

With the DeviceId as 2 I got the eyewriter to detect and use the PS3 cam! For this, I executed the Application "temptTracker" found in the Bin folder.

Hope this works for you too!

Anand Nair
Hi, i am very new to the software side of this project.. I have the built the glasses and are fully funtioning. But I have no idea where to start with the software or how to get the app running, I have a PC and have Code::Blocks installed.. Thanks
hey so i followed your instructions and it worked great for temptTracker.exe file but now im having trouble having it work for the Remoteeyetracker.exe file .. that you can download from https://cid-f966c677a7c86219.office.live.com/embedicon.aspx/Remote%20Eye%20Tracker%20Windows ... does anyone know how to make it work?
Thanks! I am trying to get this to work on my Macbook Pro but the person who needs to has a PC too I believe. I'll have to borrow a PC and follow your instructions.

Thanks again for the reply!!

Robert
On mac, all you have to do is this:

mac users need to install the modified maccam component (http://www.openframeworks.cc/files/macam-ps3eye-manualwb-defaultVGA.zip) to /Library/QuickTime to get a good, fixed everything ps3 camera image from their computer (if they are using ps3 eye camera as described in the eyewriter instructables)

should work after you move the compnent file to that directory
GEARCLUB2 years ago
Hello, Does anyone know how to set the windows input setting so that the PS3 eye camera will work rather than the built-in web-cam. I've disable the web-cam, but it still says in the command promt when running the program that the device ID being used is still "0" and runs the built-in web-cam. Any help with this problem?
lacebassett2 years ago
Thanks guys! Everything worked out great so far. Word to the wise. Make em light. My first version was too heavy to stay on the viewers face.
lace.jpg
ahall32 years ago
Great instructable
Does any one have any ideas on how I would be able to create a science fair project out of this
Thanks
anesteruk2 years ago
Can you please post a combined version of the program for this version of the eyewriter project? I have the tracking software working with the ps3 cam, but cannot figure out how to use the drawing app with the camera. You said you would post the combined version, but I can't find it anywhere! Thanks!
mconway13 years ago
I was listening to a podcast , Brain food Dude, which take the best from all the pod casts each week and plays segments. That is were I heard about the EyeWriter. I cried at the end of the segment. My Best friend cared for her Mother in Law while she slowly lost her battle with ALS. My brother had MS and My Husband who used to be an amazing artist, lost the use of his dominant hand to a drunk driver. I constantly have ideas for things that would make his life easier, but I never take action.....the final thought the speaker had for the audience was "If not now, then when. If not you, then who."
What you are doing here is so remarkable, I can not even find the words to express enough. You are inspiring. You are giving quality to life. You are creating freedom. This is the American Dream...Life, Liberty, and the pursuit of Happiness. That may sound corny, but if you have ever lost any of these, lets just say you appreciate what you do have so much more. THANK YOU
so did you end up making one of these or did you need help making one?
insmac4 years ago
Great to see the work that Bob Wasburn and I did in the 1970's being continued and updated.

We used an ir diode, ir sensor on the glasses, and a Sinclair ZX-81 to allow an ALS patient to communicate with friends and family.

Keep up the cool work!

Mac
imonsei insmac4 years ago
This is seriously awesome.

it's things like this that makes me think that humanity has a chance after all :)

on the other hand tho... it will enable people to even more lazy now :D
wonder if you can do anything like that with a wiimote... hmmmmz ;)
It depends on what wavelength of IR LED you are using. Near infrared (800 nm to 1400 nm) is projected on to the retena which means if it is powerful it will burn your retina but infra red over 1400 nm will be blocked by the cornea, which has pain sensors so you will know.

_____

Bottom line; If you get an IR LED that is powerful enough it will damage your eyes.



http://www.ehow.com/facts_6142267_infrared-light-effect-eyes.html
I don't know that the Wiimote could be used to do eye tracking, but it could pretty easily be rigged up for someone who could move their head. 

This project is awesome, and it's cool that it is inexpensive.  Now I want to see if anyone can improve on those "brain toys" that let you control a fan by thinking.  If they can be made to interpret more specific commands, they could be used in a similar manner to this project.
 Check out the OCZ nia - it's marketed as a gaming peripheral, but it's capable of so much more.
dawgz0314 years ago
wow...this is really great.....

but im just wondering would ir damage your eyes???
It depends on what wavelength of IR LED you are using. Near infrared (800 nm to 1400 nm) is projected on to the retena which means if it is powerful it will burn your retina but infra red over 1400 nm will be blocked by the cornea, which has pain sensors so you will know.
_____
Bottom line; If you get an IR LED that is powerful enough it will damage your eyes.

http://www.ehow.com/facts_6142267_infrared-light-effect-eyes.html
This is my concern as well. I have asked a friend of mine whos an optomologist or opthomologist  - she works with eyes.. I'll post her answer here, when I find out.
It is always good to be safe and your concern is appreciated, However this has been addressed thoroughly in previous posts.
pstone22 years ago
Hey,

So I saw your video and was inspired to find someone in my city that is disabled and needs help and is interested in an eyewriter but I'm a bit stuck, help!

So I bought and took my ps3 camera apart and it has a different lens configuration so i couldn't take out the infra-red filter as it is stuck to the new style chunkier piece of glass..instead i accidentally damaged the lens.

I also ordered the lens set you mentioned on instructables from dealextreme (with the 8mm lens) .. but wasnt able to pry the other lens from the lens holder to insert the new 8mm lens onto the existing one. i assume the dealextreme ones dont have infra red filters?

My questions are these:

the lens holders are expensive from australia.. shipping alone is $20! so im hoping for a cheaper alternative.. the shipping on the $6 lenses is $50 to here too. Is it possible to attach the 8mm lens without a lens holder... perhaps just with some blutack or gaffa tape or a piece of plastic holding it on?

Do I need to use part of the original lens system from the ps3 eye or is the dealextreme lens part all I need?

does it need to be a certain distance away from the circuit board? does it focus somehow?


if I was to use a different webcam, what specs does it need to have to work properly with your system?

Cheers

Paul
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