Raspberry Pi – Head Mounted Display Tutorial

 

DIY Head Mounted Display Tutorial

DIY Head Mounted Display Tutorial

Head mounted displays are definitely the latest fad that’s going around town now. You might have seen several wearable displays such as the google glass, and many others including virtual reality systems like the oculus rift. Head mounted displays are primarily used for video sharing, navigation, checking notifications, etc. However, several pioneers argue that the quintessential use for it have not yet been identified. But, if you ever wanted to build one for yourself from scratch, and are not willing to pay 1500$ just to experience its functionalities, then this DIY Head Mounted Display tutorial is for you.

This DIY hacking tutorial will show you how you can make your own head mounted , virtual reality or augmented reality displays. I have built a “Smart Cap” , first of its kind , having a head mounted display on it. Here, I will instruct on how to build a monocular wearable display that runs on the raspberry pi as seen in the picture above. The system includes a webcam for video sharing and recording and also incorporates voice recognition for a hands free experience. Thus, you will be able to build an interactive voice recognition based wearable display at the end of this tutorial.

DIY Head Mounted Display Project

Aspheric Lens

What are the stuff required to do this project?

Hardware:

  1. Raspberry Pi model B.
  2. A USB webcam with an inbuilt mic, I am using one from Iball.
  3. A 2.5″ NTSC/PAL LCD display (Since this display is not available in India, you can check this alternative: Raspi LCD)
  4. A headphone with mic.
  5. A loupe magnifier with aspheric lens.
  6. Sun board sheets or cardboard sheets.
  7. Fevicol SR glue or equivalent.

Software:

  1. Rasbi OS image with Voice Recognition Software.

How does it work?

DIY Head Mounted Display tutorial DIY Hacking

2.5″ LCD display

Head mounted displays usually consists of a high resolution LCD or any other display screen within about 5-10 cm in front of your eyes. For virtual reality systems, usually one split display or two identical displays are used for each of your eyes for the stereoscopic effect. Here, I am only using one miniature LCD display in front of an eye , hence called a  monocular head mounted display.

In this system , in order to cope with the “Least distance of distinct vision” , which is about 15-25 cm , I have used an aspheric loupe magnifier lens having 5X magnification. This makes it possible for me to see the screen impeccably at about 5-6 cm from my eye. The display is also completely enclosed and insulated from outside light. The next part of the system is a normal USB webcam which was cannibalized to take only the camera and the microphone. All the plastic enclosures of it was removed, and the wires were re soldered to get a niche position for the camera and microphone on the cap. Furthermore, I used a raspberry pi running a voice recognition software I engineered, to ensure hands free operation.

DIY Head Mounted Display Project DIY Hacking

DIY Head Mounted Display tutorial

Here, the LCD display acts like any other PC display. However, when certain voice commands are executed in tandem with the system, appropriate results or data is displayed in front of your eye. A few of those examples are : email , maps for navigation, Google search, YouTube, webcam recording and first person viewing of other cameras, etc. The raspberry pi integrated with this head mounted display thus has to be connected to the internet for performing these functions.

Step 1: Preparing the head mounted display enclosure

DIY Head Mounted Display Tutorial

Cutting the sun board sheet for preparing the head mounted display enclosure

It is necessary that the display needs to be cut off from all external light sources to ensure a sublime viewing experience. Here, I have used plastic sun board sheets, the kind of sheets normally used for vinyl advertising, for making the enclosure. Cut out a piece of the sheet of length 21 cm  and width 6 cm. Mark cross sections vertically at 6 cm , 10.5 cm , 17 cm and 21 cm as shown. Next, take a cutting knife with the length of the blade adjusted to be just 3 mm. On the lines earlier marked, cut through half way of the board. This will ensure, that the board bends properly to form a rectangular enclosure for the display.

DIY Head Mounted Display Tutorial

Cutting half way through the sheet

Now, hot glue the circuit board attached to the display to its back. This will make it a rigid one piece display as shown. Next, apply fevicol SR glue or any other synthetic rubber based adhesive to the edges of the display and stick it to the sun board sheet as shown. Bend and stick all the edges of the display and finally seal it, to make the enclosure.

DIY Head Mounted Display Tutorial

Sticking the enclosure to the display

Step 2: Attaching the lens for the head mounted display

DIY Head Mounted Display Tutorial

Take outlines of your face for cutting off the enclosure’s contours

The enclosure prepared , now has to be cut off in such a way that it fits snug with the contours of your face. Make outlines of your nose, your right eyebrow, etc using excess sun board sheets. Mark the outline obtained for the contours of your right eye on the prepared enclosure. Cut out all excess material on the four sides based on the outline. The ultimate aim being that the enclosure fits snug on your face.

DIY Head Mounted Display Tutorial

Cutting the enclosure of the DIY head mounted display

Furthermore, take the aspheric lens and place it in front of the newly modified enclosure. View the display through the lens and wrap it using black insulation tape, such that only the LCD display could be viewed through it. The enclosure and the surroundings of the display shouldn’t be seen while viewed through the lens. This ensures a better visual experience for the head mounted display.

DIY Head Mounted Display Tutorial

Sticking the lens to the enclosure of the head mounted display

Stick the lens to the enclosure using the rubber adhesive as shown. Here, I have also spray painted the enclosure black, to prevent outside light from getting in.

Next, use some sponge or soft foam like material to stick on the front crevices of the plastic enclosure. This will make the head mounted display more comfortable while wearing it. Cut out the foam sections in the same shape as the four contours of the enclosure .Stick it to the edges using the rubber adhesive.

DIY Head Mounted Display Tutorial

Covering the contours of the DIY head mounted display using foam

Step 3: Hacking the USB webcam

Take the USB webcam you have and remove its plastic enclosures. Remove the peripheral buttons, etc attached to it. Cut off the microphone attached to the circuit board. Next, salvage and remove a flexible mic enclosure with the mic from an old headphone. Now solder the new microphone terminals to the existing mic pads on the webcam circuit. Ensure, that the interconnecting wires for the mic have adequate length to be positioned near your ear. You can also use infra red leds with your webcam , so that your head mounted display will even have night vision ;).

DIY Head Mounted Display Tutorial

Hacking open a USB webcam

Now, take the webcam circuit having the camera and stick it in front of your head mounted display. This can be done by preparing a bridge using the sun board pieces. Stick the webcam circuit onto this bridge. I have used hot glue for sticking it.

DIY Head Mounted Display Tutorial

The finished DIY Head Mounted Display enclosure

Step 4: Putting it all together to make the “Smart cap” head mounted display

I had a hip hop cap lying around in my home, so I used it to attach my head mounted display. Using the rubber adhesive, I stuck the enclosure of the display on to the visor of the cap, after adequately positioning it for my right eye. The display is then powered using the 5V and GND pins on the raspberry pi. The composite video output of the pi is connected to the display via RCA connectors.

DIY Head Mounted Display Tutorial

Smart Cap – DIY Head Mounted Display

Next, I attached the microphone to the left side of the cap ensuring it to be ergonomic, again using the rubber glue. To attach the raspberry pi board on to the cap, I used velcro. I sewed some velcro strips on to the right side of the cap and used it to wrap the raspberry pi.

DIY Head Mounted Display Tutorial

Cap with the Head Mounted Display and Mic

Now you have successfully prepared the hardware for the Smart Cap head mounted display. Try it on after connecting the raspberry pi to the display and ensure its comfortable.

DIY Head Mounted Display Tutorial

Attaching the raspberry pi using velcro to the cap

Step 5: Setting up the voice recognition software for your DIY head mounted display

DIY Head Mounted Display Tutorial

Different screenshots from the head mounted display

I have prepared an interactive voice response system that responds to certain voice commands and gives you appropriate results. In order to incorporate this system , you can either use the image file for my operating system and prepare an SD card. This is the easier method, as most of the complicated stuff are taken care off, you can start using the system as soon as you plug it in the pi. First ,unzip the downloaded file to extract the .img file. For instructions on how to install this image file onto your SD card , look at step 2 of this tutorial. To begin using the voice commands , just enter the command given below and start using the system like in the video at the bottom of this post :

voicecommand -c

Or, if you would like to build and customize your own voice recognition system, please go through the DIY hacking tutorial : Voice Recognition for Raspberry Pi . In this method, you have to make sure, that you change the screen resolution for the display. This is done by editing the file /boot/config.txt , edit it using the command

sudo nano /boot/config.txt

Uncomment the line saying: disable_overscan=1 , by removing “#” , also set the framebuffer_width=320 and framebuffer_height=240 and remove the “#” from both these lines. This will create a better visual appearance for the LCD display.

The video showing the Smart Cap – DIY Head Mounted Display in action:

 

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Showing 154 comments
  • toasted tech
    Reply

    Hi arvind so I’m still waiting on my screen so whilst I wait I think I might clear some things up.

    1. What is the cable used to connect the TFT display

    2.Could you provide a jasper tutorial or show me where a good video tutorial is

    3.how well does the display show as I. Is it vision blocking overlay like… How does it look when you see with it on.

    4. Is it fine to watch videos with both eyes open or should you have your left closed?because I imagine that would cause eye strain

    5.is their a way to make jasper turn on when you say a word and also not make it beep.

    Thank you for tour time and I will post pictures when I am done

    P.S my last comments got deleted was this an accident or where they considered spam because you replied to one of the 2 comments

  • Abhay
    Reply

    Where is your house?

  • Manjeep
    Reply

    Hello Sir
    I downloaded the smart cap image and burnt it to a sd card and booted it. The screen is coming inverted and how can I change it. Using voice command -c, it is not recognizing. What is the keyword?

    • Arvind Sanjeev
      Reply

      Edit the file: sudo nano /boot/config.txt . Comment the line (#): display_rotate=2

  • Anand Krishnan
    Reply

    Will 5V/1A 3000mah power bank work for project ? Is 1A sufficient for the entire unit ?

  • Rahul Ravi
    Reply

    Hello Arvind…

    Thanks for all your help and advices, we successfully completed our project :) … But we couldn’t resolve that Google search problem.. But still.. all other worked fine. Once again thanking you..

    http://s10.postimg.org/jac6ly37d/DSC_0245.jpg

    With Regards,
    Rahul :)

  • Anand Krishnan
    Reply

    Yes.I found xdotool for this.But the problem is will terminal takes voice commands when another apllication or window is running ?

    • Arvind Sanjeev
      Reply

      Will have to test it out, trial and error is the way to go.

  • Anand Krishnan
    Reply

    Will the project works without a mouse ?Because if we open an application or anything from the terminal by voice recogntion we need a device to close the window (Mouse or Keyboard) to come back to terminal window again.So how it is possible without a mouse or Keyboard ?

  • Anand Krishnan
    Reply

    What should be the rating of power bank ?

  • Anand Krishnan
    Reply

    In the cap how power supply is provided ? External adapter is not practical to carry with cap.So how to attach power source to the Cap ?

  • Sushant
    Reply

    Hi arvind!
    Kudos for the smartcap!
    I’ve been trying to make one for me, downloaded the googlevoice image provided by you.. but when I boot it up on my Rpi i’m unable to login.

    I’m using a B+ model and trying to login using
    username: pi
    password: raspberry

    Can you help me out here?
    Thanks!

    • Arvind Sanjeev
      Reply

      Hi, when did you download the image file?

      • Sushant
        Reply

        Hi,

        Thanks for replying.
        Downloaded it about a week ago. Although, I resolved that issue by installing the LCD touchscreen image, since I decided to use that instead.

        Now, I face another issue. I’m unable to play videos using the omxplayer on the WaveShare SpotPear 3.2 Touchscreen LCD. Googled and still googling but unable to find a solution. You got any idea?

        Thanks!

        • Arvind Sanjeev
          Reply

          Hi Sushant,
          I was also searching for a solution to playing videos, will let you know when I find it.

          • Sushant
            Reply

            Cool. I’m looking for it as well. Let me know if you find one and I’ll do the same.

  • Anand Krishnan
    Reply

    How to interface webcam with pi ? Do i have to use any other driver software ?

  • Rahul Ravi
    Reply

    Hello Arvind.

    The voice recognition is now working fine, but i have problem in google search. when i say the command google android, only google page is loaded. no search is being done.
    and if i just say google only it shows command google and opens a blank webpage only. what could be the reason?? please reply soon.

  • Rahul Ravi
    Reply

    Yes it does.
    But the keyword provided is not getting detected. even if i don’t give a keyword the response is heard. The keyword is not being detected. I have gone through the tutorials but it doesn’t help. What could be the possible problem of not waiting for the keyword and to work even if the keyword is not provided. please reply soon.
    And please help me with the display section. I loaded a SD card with voice recognition software ( OS), i need to display the same SD card (OS) out on the display. Bt my display works only on another OS which is only designed for display process. Is there any possible way to get out on LCD for the Voice recognition OS. ?
    Hoping a helpful reply soon.

    :D

  • Rahul Ravi
    Reply

    Hello,
    When i try to input my keyword the Pi doesn’t wait for it.
    that is, it shows.

    keyword duration is 2 and duration is 3
    Found Audio

    It doesn’t recognize the keyword. and even if we doesn’t input any keyword, it shows found audio.

    http://s10.postimg.org/76q6g9w8p/IMG_20150213_150621539.jpg

    No loading like this occurs after the keyword.
    what could be the problem. please try to reply soon.

  • Vedang
    Reply

    Hi Arvind,
    Can you please tell me how can i add voice recognition to my pi in which the sd card already has an OS specially mounted to run on my touch screen LCD display.

  • Vishal Borana
    Reply

    Hey Aravind. Good work buddy. Could you please tell me where can i find the Ntsc/Pal display or Raspi Lcd online? And is there any other alternative for the display because i wanted to make it for my College project.Something affordable and cheap :) .

  • Rahul Ravi
    Reply

    http://s10.postimg.org/76q6g9w8p/IMG_20150213_150621539.jpg

    This is the screenshot i was talking about. And the audio is still not detected. “arecord -D plughw:1,0 test.wavi” and “aplay test.wav”. recoding and playing is working fine. still the keyword is not detecting.

    • Arvind Sanjeev
      Reply

      Please check speecg-recog.sh program, does it identify the voice?

  • Rahul Ravi
    Reply

    Sir,
    When I tried to input the keyword, the software doesn’t responds to it. and shows as in the attached screenshot. I am using a 3.5mic attached to the USB sound card.Also i tried to check my mic using the command “arecord -D plughw:1,0 test.wavi” and “aplay test.wav”. and it worked. My voice input is not recognized by the software as it doesn’t show AUDIO FOUND. please help.
    And please tell me how to make in bulit mic in the usb webcam, my webcam is same as yours and there are 2 ports at one end one is a USB port and other is a 3.5 jack. please tell me where to solder the ports of mic to the board.
    Hoping your reply soon.

    Screenshot:

    https://gm1.ggpht.com/ozkTX4ECo-wxTbplpS0Hfw27VQXtlNiTaggwuEEQwqol4ha2HQgCw10F6xR_N_vKTN27XWRamBt0uXA54LHgBxhvr1AHaNqdEnwi-PiS0D6X0ml19gl7MKBQvMYX1w3ZKuDL7Ff3eC5FhtZJ49J5cAJLIO0CXPtLOxisHqu6ngjTex1WzOIsSpbQk5RQMdlAlv0Kg_D7x7uhvjBNJAtaOtkiHGcdeFB9Sl9idyLhx0t0iPOqz4Wm21NjZCf1tXxeQJ61bH7DoxQ06JaYbUHsFHCfy6se9peYoA4gsv4dRIoWnG0QuGE5aiI2fIYfzZV9QBchl5NHMYDCKIDlwRznUQOt_rTzdTR8dL7TdGSQ_sof5y-3RrwPryHuOOhiVfWfnCsdPTE4LI8U9KogL7175NefpMF5Y-GcrDd-qaCdXHwNPXwQIi3ASP7XjXxR6l-Dm5n6hdV9hnS1amKknDmQDZRWSuiU2qegH9WLi6eAlwepWdDNPMQgoLe4UOXb-DrFelux5CGzRhJbwAiKarGF1b4zoID3ZIB9Dj8ej3_GxxUkAz1eIID64SJS5thiZ5qdq8LycBI_=w1326-h493-l75-ft

  • Vedang
    Reply

    Hey Arvind,
    is there any way to make the windows that open up in a 3.2 touchscreen lcd like desktop preferences to fit in the screen.I can not find a way to scroll to the bottom and thus not able to see many of the options. Please guide me.
    Thank you

    • Arvind Sanjeev
      Reply

      You can press the “alt” button on the keyboard and drag the window using the mouse.

  • Vedang
    Reply

    Hi Arvind,
    In order to connect an lcd panel to the display output of pi, you need a driver board of the lcd. I am working on a project where i cannot find the driver board for that particular lcd panel on which i am working. Do you know any way by which lcd panel can be connected to pi via the gpio of if the driver board can be made?
    Please guide me.
    Thank You

  • Akhil
    Reply

    hi Aravind,
    I really started making the smartcap. But a problem has been raised that I have two image files – one with the display driver and the other – the smartcap image. How can I run the smartcap on the display??

  • Akhil
    Reply

    hi arvind..

    pls check if the following displays can be used for the project

    http://www.tinylcd.com/tiny149/product.php?id_product=49

    http://www.tinylcd.com/tiny149/product.php?id_product=37

    • Arvind Sanjeev
      Reply

      Hi Akhil,
      The 3.5″ will work with raspberry pi. You will have to download their .img file (from the site or the DVD) and prepare your memory card with it.

  • Akhil
    Reply

    Hi sir..
    Sarath and I are interested on the project and planning to do it. Now we have separate images for the voice recognition and display. Plese help us for the next step..

    and could you please suggest a cheaper display??

    Thank you

  • sarath
    Reply

    hi sir,
    we’re planning to do this project.
    but we’re having a pi b+. it is having an A/V out only. can you pls explain how it can be configured for this purpose?

    and pls give the details of suitable displays available in kerala?

  • Isaiah
    Reply

    Reminds me of Star Trek’s “Borg” with all their fancy equipment and eyepeices.

  • Mirza Aftab
    Reply

    What did u mean by corresponding I didn’t understand it. Where I can get that display (Wave Share Spot Pear 3.2” LCD display) in India or if it is online in which website can u tell me
    Please,
    Aftab

    • Arvind Sanjeev
      Reply

      Check out the links to buying it from the LCD tutorial page.

  • sarath
    Reply

    would you please tell A 2.5″ NTSC/PAL LCD display in indian market for online purchase

  • syed
    Reply

    Hi arvind,
    We can do this project by raspberry pi model b+ or only not? AND say reasons because b+ is cheaper. And I have notice that b model has 2 video composite. And b+ having only one.
    Regards,
    Syed

    • Arvind Sanjeev
      Reply

      Hi Syed, you can do this using the B+ too. But you would have to buy the appropriate composite video connector for B+. It is different from the connectors used for raspberry pi B.

  • Mirza Aftab
    Reply

    Yeah I can use it but is 3.2” LCD display it is not too much bigger for this project (smart cap)?

    • Arvind Sanjeev
      Reply

      Yes, it is bigger. You would have to place it correspondingly. No other displays are available in India currently.

  • Mirza Aftab
    Reply

    Hi Arvind, Great job man. I am also a fan
    of fin. I started already making
    my smartcap but the problem is the lcd display from the adafruit costs nearly Rs6000 including the shipping charges with excluding the purchase of raspberry pi total cost me around Rs 6000 then how did u make your smart cap within Rs 4500
    I want a cheaper alternative of
    that. Please help me
    Thanks,
    Regards,
    Aftab

  • Anand Krishnan
    Reply

    But we have to submit our project before february 15th.So is there any delay ?

  • Anand Krishnan
    Reply

    When i checked adafruit for the display shipping charge is very high around 50$.So the total amount will be near to 100$.Can i get it from any other indian sites ?

    • Arvind Sanjeev
      Reply

      I will be providing an alternative to the above display soon, for less than Rs.3,000. Please signup for the newsletter to get notified about it: form.

  • Pavithra
    Reply

    When i submitted the abstract of smart cap in my college my teacher asked this question ?I couldn’t find convincing reply.So please help me.

    • Arvind Sanjeev
      Reply

      As an example, you can use this as a:
      1.Wearable eBook reader
      2.Wearable navigation system (using google maps)
      3.An assistant for industrial workers (it can stream the video from the worker to the base station)
      4.An augmented reality system which can produce info about the objects around you through the display.

  • fathima
    Reply

    thank you for your reply ,
    one problem for the execution all commands are inverted so what can i do

    • Arvind Sanjeev
      Reply

      Hello Fathima, I did not understand your question. Can you give an example?

  • Pavithra
    Reply

    I have a doubt.What is the advantage of Smart cap over an android smartphone ?The services offered by Smart cap is also available on Smart phone.Smart phone is handy,less costly and reliable.So What is the advantage of using a Smart Cap instead of Smartphone ?

    • Arvind Sanjeev
      Reply

      It depends on what you want to build using the SmartCap. Perhaps you can build a wearable navigation guidance system or do similar stuff that you can do with the Google Glass. Primarily think of it as a head mounted display.

  • vivek
    Reply

    the username(pi) and password(raspberry) is giving login incorrect in the image i have downloaded.. Plz help

  • fathima
    Reply

    plz give me password and user name of raspberry pi

  • Santhosh
    Reply

    Awesome sir.. You made India proud.. Hats off :)

  • Kinam
    Reply

    Hey Arvind I have got a screen which uses gpio pins to connect! thing is they give their own os image to get the display running if i install any other image the display do not work.
    Then how can i setup steve hickson voice software in this OS?.. Plz help.

  • Denil
    Reply

    What about speakers?

    • Arvind Sanjeev
      Reply

      You can connect either speakers or headphones to the audio output jack of the Raspberry Pi.

  • Anand Krishnan
    Reply

    How many will take to ship tft display from adafruit to Kerala ?Can i buy the same from E-bay ?

    • Arvind Sanjeev
      Reply

      Will take approx 10-15 days. Haven’t checked if the display is available on ebay.

  • Anand Krishnan
    Reply

    I don’t have HDMI output dsiplay.I have a VGA monitor.So can i use HDMI to VGA converter to connect display output from HDMI of pi to VGA input of monitor.

  • Anil
    Reply

    Yeah that was the first thing I considered. But interfacing a camera to these sticks would have to be usb web cams. That is if it has support in the first place.
    Any thanks a lot for the info man. It helped me out.:)

  • anik
    Reply

    Its nice… but my problem is i cannot find a display 3 inches in budget it is going beyond Rs. 7000 (on adafruit) which is not fesable for me. Plz send me some link to raspberry pi display available in India. I really need your help, its a part of my project and a small display isnt available… I have found one but its 3.2 inches and requires a external power of 12 volts which will make it really bulky.
    plz help

    • Arvind Sanjeev
      Reply

      Hello Manik, if you are focusing on building a head mounted display cheaply, you can also try the google cardboard hack. Also, I am currently trying to get some of the 3″ LCD displays to India, will let you know when they arrive.

  • vivek
    Reply

    Hey arvind can we have an cheaper allternate of lcd display and lens, which is available in india…
    as shipping charge are very high on them….

    • Arvind Sanjeev
      Reply

      You can always use the google cardboard hack, if it is something similar to what you are building. Else I am also planning to release a kit for the same, however that would take some time.

  • Manik
    Reply

    Hi, Arvind.. Your gadget is awesome! I really liked it.

    Problem is price of DISPLAY, LENS is quite HiGH in dollars and they even cost much shipping charges.

    I want a cheaper alternative of that.

    I am using Raspberry pi B+

    Plz help!

    • Arvind Sanjeev
      Reply

      You can always use the google cardboard hack, if it is something similar to what you are building. Else I am also planning to release a kit for the same, however that would take some time.

  • Karthik
    Reply

    Hi arvind , im frm tist hope u recognize the college . good work on the smart cap. Hope u will develop more on it!

    I had an idea about a cap that would assist the onfield umpires in cricket match to give a better decision making approach .ill be mailing u the details .just need a help from u .hoping i can merge this with the smart cap!

    • Arvind Sanjeev
      Reply

      Definitely, you can create a neat UI through the SmartCap for the umpire.

  • sashvat ganesh
    Reply

    Hi Arvind

    pls help me on putting a 3g card in the raspberry pi

    and installing a 5v battery to the raspberry pi

    • Arvind Sanjeev
      Reply

      Hello Sashvat, you can easily interface a 3G dongle with the raspberry pi through USB. You can also easily use a smartphone battery bank for powering your pi.

  • Anil
    Reply

    while Odroid is good. it’s a tad bit pricey. Beagle bone is 4k whereas odroidu3 is 8k in india.
    I am an Electronics engineer (post grad). I want to do an embedded project i.e a HMD something like what you have done for AR applications (which i am currently developing).
    I can only justify the project if it costs less for implementation you see :).
    So that’s my story. Still say odroid is the best? any other dev boards out there?

    Tks in adv.:D

  • Anil
    Reply

    Oh thanks for the reply.
    I looked into the ODROID-U3. Seems promising, hadn’t heard about this before. Very high specs:). found a camera and display module for it.

    I researched a lot and found out that the ‘beagle bone’ has a tiny display and 1.6 mp cam available for android. Thought about this as it has the best dev support next to the raspi.
    Any thoughts on this.

    Again thanks in adavance:P

    • Arvind Sanjeev
      Reply

      You are absolutely right, Beagle bone is just after raspi in terms of community support. If you would like to run android, ODROID will serve you well.

  • Anil
    Reply

    Great job indeed.

    Bro, I am setting up to do an embedded project (for engg.).
    For this I need an android development board which supports displays about 3 to 4 inch ones and a camera. I considered a the raspberry pi. It runs the raspbian os. I found that it can be flashed with an android 4.0.3 ICS os. But I need to know for certain that i can interface a small display and a camera for the raspberry pi running on the ics os.

    I found these 2 products for the pi website

    Display:
    https://www.crazypi.com/raspberry-pi-products/Raspberry-Pi-Accessories/32-TOUCH-DISPLAY-RASPBERRY-PI

    or what you’ve mentioned adafruit

    Camera:
    https://www.crazypi.com/raspberry-pi-products/Raspberry-Pi-Accessories/RASPBERRY-PI-CAMERA

    But i think they support only the raspbian os I want to know if it can be used for android os and if not what alternative can i hope for?

    Thanks in advance.

    • Arvind Sanjeev
      Reply

      Hello,
      The android OS usually supports HDMI displays through the Pi. You can also check out other development boards like OdroidX which runs on Android.

  • Mathews K Luke
    Reply

    I am no able to buy the raspberry pi.
    The link is showing “This listing (**********) has been removed, or this item is not available.”PLEASE HELP ME

  • Neha
    Reply

    Sir, How to provide power supply to raspberry pi. (no adapters)

    • Arvind Sanjeev
      Reply

      You can either use a normal smartphone charger (micro USB) or buy one of those portable smartphone charging battery banks.

  • james
    Reply

    Nice One .Congrats and wish all Success @Arvind

  • Deepak
    Reply

    Hi,
    plz give ur e-mailid……….

  • Ajoy Lahiri
    Reply

    nice ,,, I want this

  • DHAVAL
    Reply

    YOU DID GREAT JOB.
    TRY TO MAKE SMART WATCH BECAUSE SMART WATCH IS SELLING AT HIGH PRICE.

  • Neel Aundhia
    Reply

    Just make sure that you have a wi-fi dongle and tethering option in your pi.
    :-)

  • Neel Aundhia
    Reply

    Vedang, you could just use a smartphone with VNC/RDP.

  • Neel Aundhia
    Reply

    Hats off to your work its a great concept but, I’d recommend you to use a better speech recognition software like Nuance Dragon, Tazti. These are windows native but I wonder if you could use “Tazti” with “Wine”(Dragon most probably will not work).
    BTW I just used my iPhone and laptop(In my Back-Pack) and connected them with RDP to make an iteration of the”Smart Cap”
    Keep the good work up!!
    If possible keep in touch

    • Arvind Sanjeev
      Reply

      Wow thanks a lot for the tip :) It would be great if you could share some pictures of it :)

  • vedang
    Reply

    hey arvind do you have any idea how can i hook up my dissembled mobile screen lcd to raspberry pi.I am looking for a cheap alternative for the screen for my pi.

    • Arvind Sanjeev
      Reply

      You can probably search using the part no of the screen in google and see if anything comes up, else we can try something else.

  • farzeb
    Reply

    Superb Bro ! wonderful Job..

  • Rohith
    Reply

    wow wow wow.. awesome.. very good job … all the best… :)

  • pranay
    Reply

    Awesome bro…..

  • Bhargava Vijayakumar
    Reply

    Great work Aravind!! Wish you the best on all your future endeavors!! Really encouraging for the youngsters.

    Best Regards
    Bhargava

  • Varun Aggarwal
    Reply

    Hi Arvind..I’m a journalist from Economic Times..wanted to talk to you urgently for a story…could you share your contact details with me at aggarwal.var@gmail.com?
    Regards
    Varun

    • Arvind Sanjeev
      Reply

      You can reach me on ars@diyhacking.com

      • suhail malappurram
        Reply

        hi aravind sanjeev u r great

        iam in malappurram kerala
        iam a biginer to raspberry pi so, i dont nothing about it but i know electronics

        i want also make the smart cap but ihave so many doubts and confussions pls clear me

        firstly i dont understand ur tutorial of softwares

        1. shoul i get raspberry and ntsc disply and loupe magnifietr from a local shops in kerala

        2. when iam buying the rasberry pi if i get the preinstalled rasbi os or iwant buy it seperate

        3. if iwant to buy seprarte, how it install. and how i download and install voice recoganisation software on rasbpberrypi

        these are my doubts and iam in malappurram kerala so i can contact you personally. pls would u give me ur mobile number or whats app number plsssss
        iam a bigner i dont nothing with the comanding

        • Arvind Sanjeev
          Reply

          To answer your questions:
          1.You can get the raspberry pi at local shops, for the ntsc display, refer to the link in the tutorial.
          2.If you are comfortable with loading the OS into the memory card, you can do it. Else, you can buy the pre installed version.
          3.Please check out: https://www.youtube.com/watch?v=y4GOG4P-4tY

  • vedang
    Reply

    hey arvind i had something similar in my mind since i started using pi, but i couldn’t figure out anyway to get the display at less than 10 cm.Can you please provide me some link for the aspheric link to buy?
    You are great.

  • sudhakar
    Reply

    superb yar… great work..

  • Asim
    Reply

    Awesome work….

  • mihir Naik
    Reply

    #ArvindSanjeev #Great i will wait to get more from you.

  • Darshan Bansal
    Reply

    This is a very cool project. I would like to get a smart cap.
    Darshan

  • manoj
    Reply

    Great job man

  • Hrushikesh
    Reply

    It would been really cool if this could show you current webcam view in the background of display as wallpaper all the time. This can be achieved through VLC I guess.

  • Hemant
    Reply

    Hi Arvind,
    This is really a cool Pi project.
    Thanks a lot for sharing.

    Regards,
    Hemant

  • Rohan
    Reply

    Cool Stuff Bro !

  • Anurag Prajapat
    Reply

    Great job man. I am also a fan of fin. I started already making my smartcap ;)

  • thakurdas nayak
    Reply

    NICE BROOOO .BUT IS WORK IS SOLLLO SO

  • dayal
    Reply

    Hi Arvind

    Great Job !
    PLease let me know where did you get /purchase the LCD display board and the controller?

    Thank you
    REgards
    Dayal

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