Arduino Glasses a HMD for Multimeter

Building an HMD with no special parts, to make work easier and safer

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Trying to build a cheap Arduino Data Glasses for everybody.
It's working, and now it can even help to avoid accidents. From the first idea to the working prototype, it took 4 Month

The challenge was, that It should be constructed out of common materials that can be found easily.
The project is more about how to build the optical system for this HMD
I have a few ideas and one of them is to connect it to a Multimeter over Bluetooth to get the Data right in front of my eyes.
One thing is clear, you can not just place a screen in front of your eyes, because it will not be possible for them to focus it.

In the logs you can see from the first tests to what I have now.
The whole project runs under Open Source License.

And please, if you use my design, do not forget to mention that it is based on my idea and add a link to my homepage
Thank y

The optical design will be the most difficult part, but I think I found a solution for this.

Follow the project logs to see the updates. The costs of the prototype amounted to 70Euros.

Video of the working device

Link to the video and Link to the video in German

One of the Prototypes

Link to the video

Standard Tesselated Geometry - 150.67 kB - 09/24/2016 at 21:03


Standard Tesselated Geometry - 160.63 kB - 09/24/2016 at 21:03


Standard Tesselated Geometry - 58.68 kB - 09/24/2016 at 21:03


Standard Tesselated Geometry - 62.58 kB - 09/24/2016 at 21:03


Standard Tesselated Geometry - 36.61 kB - 09/24/2016 at 21:03


  • 1 × arduino pro micro
  • 1 × Bluetooth V4.0 HM-11 BLE Module
  • 1 × 280mA Lipo Akku
  • 1 × 50 - 500mA LiPo Charger Circuit
  • 1 × 30mm acrylic plano convex lens with a FL of 100mm

View all 9 components

  • Feeling pissed off

    Alain Mauer02/26/2018 at 21:08 15 comments

    I'm really feeling pissed off, when I see people using my designs and try to sell them as their idea.

    This guy makes a nearly 100% copy of my Data Glass and only after I send him an email he added "inspired by Alain^s Projects". just inspired, really ???????

    I think that's not the way open source should work. If you use the work of someone else, the minimum is to mention this person and set his website link in the description.

    The only thing which calms me down, is that it is still my invention and other people will know it.

  • Lens Alternative

    Alain Mauer12/18/2016 at 11:27 2 comments

    Hi, the lens is still the problem, because it is not easy to find.

    I think, I found a good alternative. A small Fresnel lens. Easy to find, cheap and you can cut it with a pair of scissors.

    Hopefully I will find the time to test it.

    The focal length is about 110mm, with should be fine.

  • New Display 0.49 inch

    Alain Mauer10/18/2016 at 19:56 5 comments

    The new displays just arrived. Will build a smaller version.

    I think I will start a new project for this.

  • Things to do

    Alain Mauer10/10/2016 at 07:24 0 comments

    Thinks to do:

    • Finishing the Software, to auto connect to a Owon Multimeter
    • Adding a battery indicator in the display. The BLE module has this feature.
    • Building different reflectors with tint and mirror foils, to make the glasses work in a bright area,
    • Reducing the weight and redesigning the enclosure.
    • Testing with a smaller 0.49 inch display.
    • Creating a technical Data sheet

  • The end is near

    Alain Mauer09/19/2016 at 16:07 0 comments

    Finally, all fits together.
    Now a nice video of it, a full description and I'm done.

  • Modifying the charger circuit

    Alain Mauer09/17/2016 at 19:28 0 comments

    I needed to change the LiPo batteries. I use now a smaller, 280mA, instead of the 330mA. For this I had to change the resistor in the charger circuit. It's 3k smd part. I soldered a normal resistor with the value of 5.6k in place to reduce the charging current to 200mA.

  • A small reflector modification

    Alain Mauer09/16/2016 at 07:43 0 comments

    Until now, I heated the reflection screen and bent it to 45 degrees. To make the construction easier I printed a new holder. In the picture, you can see the difference

  • I looks like this will be the final design

    Alain Mauer09/15/2016 at 08:33 0 comments

    I finally start handling the 123Design software and my 3d Printer.
    I was totally focused on my cardboard design enclosure, but at the end, I had to redesign the glasses due 3d print problems. Now you can adjust the reflection screen, to get the best view.In the next few days I'll test the electronic with the new LiPo, but I'm still waiting for the lenses.

  • B.T. Data Glasses in his new enclosure

    Alain Mauer09/02/2016 at 16:08 2 comments

    I finally printed out the covers for the enclosure. The mirror and the lens are mounted with all the electronics. All fits in, and it works great. This one has a lens with a focal point of 100mm.

    All in. The controller, bluetooth, display, charger and the LiPo Batterie.

  • First 3d printed enclosure

    Alain Mauer08/31/2016 at 07:25 0 comments

    I just bought me a 3d Printer, and this is the first enclosure for my Dataglasses.

View all 37 project logs

  • 1
    Step 1

    How it works

  • 2
    Step 2

    The Lens

    The lens was a tricky thing. I had not really an Idea about optics. So I googled and googeld, and I learned a lot about real images, virtual images focal points, and magnification. The best working lens is an Acrylic Plano convex lens with a focal point of 100mm. If you place the screen at a distance of 73mm from the lens away, you will get a virtual image at a distance between 27-30cm. The magnification factor is x3

    That's perfect, because another important thing is, that your eyes can only start focusing things at +-25 cm

    I found this website to calculate the object distance.

  • 3
    Step 3

    The electronic

    Here are all the parts for the data glasses

    I just used a smaller battery.

    To use the 280mA battery, I had to change the 3k resistor against a 5.6k resistor on the original board. The charging current is now reduced to +- 200mA.

View all 6 instructions

Enjoy this project?



eduardo morales eslachin wrote 10/24/2019 at 16:46 point

Hola, me gustó tu proyecto, serías tan amable de proporcionarme el código arduino, me gustaría intentar hacer algo para mí. Por favor, mi correo electrónico es 

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cristian wrote 10/22/2019 at 22:36 point

Incredible work. Thanks for sharing  all your research and your amazing work!

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borre2455 wrote 10/18/2019 at 00:44 point

Holaa disculpa ¿Podría enviar el código a mi correo por favor? Mi correo es

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rafununu wrote 10/14/2019 at 18:45 point

Alain, everyone can note you give a very few informations regarding the BT management, I won't blame you for that, hours of work are needed to implement BT and decode the Owon protocol. I understand your frustration as well, when others steal your work without even mentionning it, nevertheless this platform is dedicated to open source project. I recently bought an Owon multimeter to make something similar but not identical and with a Nano. Now, I must study the protocol, I've got plenty of time, I'm retired. Congratulations anyway, cheers. Raphaël.

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Mark wrote 11/24/2019 at 02:16 point

how did your project go?

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iqbaladamzidane2 wrote 10/13/2019 at 13:12 point

hello sir. My name is Iqbal Adam zidane. I'm from indonesia. I'm really interested with your arduino data glasses project and i'm sorking on it for my school project. Could you send the code to my email, please?

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d1208chen wrote 10/13/2019 at 02:11 point

Hello would you be able to send me the code ? Thank you very much. My email is Thank you, thank you.

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Rosita Dewi wrote 10/09/2019 at 18:30 point

Hi I am Rosita Dewi from Indonesia. I am student working on this project, I find this project to be really interesting. Would you able to send me the code? please my email is Thank you

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maximinocato wrote 10/02/2019 at 13:41 point

Hi I am a student working on this project, I find this project to be really interesting. Would you able to send me the code? please my email is

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Juanito wrote 10/01/2019 at 18:47 point

Hello would you be able to send me the code as well? i am a student working on this project!

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adriorellana90 wrote 09/29/2019 at 08:28 point

Hi I am a student from Ecuador and i want to do this project if you want to help me send me code for my email plis 

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maxhissel wrote 09/28/2019 at 15:53 point

Hi can i have your code i need it to start my project off so i can work futher on it  


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Cankut wrote 09/24/2019 at 17:52 point

hello, can I get the arduino code and connection diagram? I'm very excited about your project. I'm a mail

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eslem201e wrote 10/19/2019 at 22:38 point

bana ekranı nasıl bağladığını yaptığınızı anlatırmısınız bende size kodları veririm

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frostbeast9 wrote 09/23/2019 at 21:08 point


Much would be appreciated.

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Sy242531 wrote 09/21/2019 at 13:10 point

hello sir, i have a doubt regarding this project. The virtual image of the light is formed the same side where the source is. Here the source is the emitted data from the mirror. The virtual image must be the same side of mirror then how are u going to achieve it on the transparent glass on the other side of the lens. 

Sir please reply as soon as possible.

My email id is

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Manohunter wrote 08/28/2019 at 21:19 point

can you please send me the Arduino code

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denicss wrote 07/02/2019 at 07:42 point

hello, can i  get the arduino code and connection diagram? im very excited to your project. my email

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Mark Joseph wrote 06/24/2019 at 12:25 point

I want to say that i want to evolve or to improve your project not only in using multimeter also in all gadgets such as cellphone, laptop etc.  Also i want to add sounds for the google maps. 

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Mark Joseph wrote 06/24/2019 at 12:23 point

Sir Alain, i have a question what application can i use in programming the arduino code

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Mark Joseph wrote 06/24/2019 at 12:21 point

Hello sir can i get the arduino code for my study. Plss


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29310 wrote 06/03/2019 at 10:45 point

Hello, Alain! Since 2007, the bluetooth data transfer code has changed in the multimeter. Could you help to disassemble it under the sketch?

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