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?



Rodney wrote 02/09/2019 at 01:29 point

Plagiarism is the sincerest form of flattery. So please dont be pissed it only slows you down. Great idea/job on the glasses!

  Are you sure? yes | no

Andrei wrote 02/02/2019 at 21:19 point

have you tried to put screen just next to the reflective glass? Will that work? I mean will it be visible? I know you will have to modify screen library to display mirrored images. This should simplify and make your device smaller. As for me I really like it and will make it as a second step to my STM based navigation system once I make it fully work )

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deshmukhninad.d wrote 01/21/2019 at 06:54 point

Hello Alain can you please help me with the arduino code

My email id is

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aminakmal2303 wrote 01/20/2019 at 08:28 point

hello Alain. im very excited to do this project. Can i get the arduino code?

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william wrote 01/14/2019 at 11:17 point

love the project could you send the arduino code you used. Thanks keep making im new to all this and find it very amazing.

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azmanhasan629 wrote 01/07/2019 at 11:26 point

sir, can i get a code for arduino?

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azmanhasan629 wrote 01/07/2019 at 11:04 point

how to programming this arduino?

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David wrote 01/04/2019 at 16:16 point

Hello Alain, it is a very good project, I printed and bought all the components. Can you send me the Arduino code? thank you

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shiwacreative wrote 12/18/2018 at 23:15 point

wow great idea! can you send me the arduino code please :)

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Domenico wrote 12/12/2018 at 11:38 point

Hello, i found your project very interesting, can you send me the arduino code? thank.


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Hector Jesus Mendoza wrote 12/05/2018 at 01:56 point

Hello, I liked your project, you would be so kind to provide me with the arduino code, I would like to try to make some for me. Please, my email is

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Rafael Omodei wrote 10/31/2018 at 21:35 point

Hello, I would like to use your idea in my project, would it be possible for you to provide the source code, which makes the whole operation work? Do you have an article? my e-mail :

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Piyush Aryan wrote 10/28/2018 at 06:05 point

Hi Alain I want the code of Arduino Pro because I am Making this Arduino Smart glass. So, please send me on my email

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Amey Kshirsagar wrote 08/11/2018 at 09:17 point

Hi Alain,

Great Work on the HMD. Really a big fan of it.

I can suggest to up the ante of this design by using Intel TinyTILE ( for multiple reasons. Although it is discontinued by Intel :-(

Also I found a this ( to be useful as well

And the ultimate one to be this (

However I am fully aware of the power consumption of these hardwares but these are pretty serious ones, considering the future of industrial IoT sector.

Keep up the work and I sincerely wish you all the best

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Phil Grant wrote 08/06/2018 at 19:18 point

Hi, Great project, I'd like to make one, all I need is the time :-)

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Fabiano Souza wrote 07/03/2018 at 03:29 point

hi Alain, fantastic idea, maybe is possible to adapt to motorcycle helmet with direction information... your project open many possibilities...
thank you!!!! \m/

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gtxviper wrote 09/06/2018 at 02:40 point

Hi Fabiano... have you adapted this for a motorcycle helmet yet? I was thinking about that myself. Would have to use something like a 25mm Dia. x 30mm FL Plano-Convex Lens or something similar to shorten it and maybe tilt the glass along its long edge to refract from below. What do you think? regards Stuart

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kriseyuliana wrote 06/13/2018 at 01:03 point

hi alain, i am a engineering student. i have some question about this project. where i can buy the lens? please answer my question, i am very need this project. thank you

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asdollarsign90 wrote 05/28/2018 at 05:48 point

I want to know how to connect all the wires . thank you

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Stevie wrote 05/09/2018 at 20:01 point

A fantastic idea, I look forward to watching your idea evolve. Thank you.

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omaarsx_13 wrote 04/20/2018 at 17:58 point

Excuse me what commands you used in the Arduino, to test the messages that you send with the application and that were transmitted in the Oled display.  Because I tried to do the same test but the Oled don´t recognize any word that the Bluetooth transmitted.

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