Open-Source e-book for blind people

Thenar is a learning kit for assembling a portable electronic book for blind people

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Since most Braille displays are expensive and not available for purchase in different countries, I have figured out how to make an inexpensive version of a handy portable book for visually impaired people, and for those who start learning the Braille alphabet.

The main idea of the device is the simplicity of its creation and using it. The specific shape of the device lets convenient positioning of a reading finger on a single Braille cell and a thumb on a jog-dial for text navigation.

Using a 3D printer (FDM), soldering basic cheap components available in any electronics store, even a mid-school student can produce this electronic book and gift it to a blind person.

Project in progress...


SolidWorks 2019 file

sldprt - 3.85 MB - 08/25/2019 at 13:16



SolidWorks 2019 file

sldprt - 117.11 kB - 08/25/2019 at 13:16



SolidWorks 2019 file

sldprt - 134.68 kB - 08/25/2019 at 13:16



SolidWorks 2019 file

sldprt - 151.57 kB - 08/25/2019 at 13:16



SolidWorks 2019 file

sldprt - 627.87 kB - 08/25/2019 at 13:16


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  • 1 × Arduino Nano
  • 1 × Li-ion 18650 Li-ion battery 3.7V 2200mA
  • 1 × DC-DC booster from 3V to XL6009
  • 1 × GT2 timing belt GT2 10 mm width belt
  • 1 × Rotary Encoder

View all 18 components

  • New Form

    A.dzhusupov08/25/2019 at 14:00 0 comments

    Anderstanding that it is too difficult to find financing for producting my project I desided to convert it to a assebling kit for scholl students and enthusiasts. So I began to change the body of Thenar to make it easier to 3d print and solder and assemble. Now it can be produced even by people with no experience in product

  • Firtst try to find a financing

    A.dzhusupov08/25/2019 at 13:56 0 comments

    In May I had a conversation with Deputy Minister of Labor and Social Support of Kazakhstan and presented Thenar. He was intersted in project but, unfortunately, Mitistry didn't have any programs for fincial support for this kind of projects, and I was advised to find money by myself, realise the project, and come back with fully finished and ready product, and than maybe Ministry will buy them.

  • First prototype

    A.dzhusupov08/25/2019 at 13:50 0 comments

    Here is the first protorype of the project that I presented to Ministry in April 2019. It was partialy working: forms Braille-letters, sounds them, reads only English texts from the SD-card

  • Start a project

    A.dzhusupov08/25/2019 at 13:45 0 comments

    I stated the project in February 2019 when I get a Letter from Ministry of Labor and Social Support about their thechnial devices for blind people.

View all 4 project logs

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Alits1988 wrote 01/21/2020 at 18:42 point

It is a great thing and I am impressed by this post and I want to take knowledge about this in very deeply. Because I am a writer and I write more thought and for writing, I use the best cheap writing sites. after reading your post, I thought about this it is very critical and different and I want to write about this. I took help from which I found so much useful for my writing work. So please explained deeply about this project and I am very happy to read this because it is very great information for everyone.

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Tom Nardi wrote 08/31/2019 at 19:50 point

Very interested in seeing more about how this project works. Do those copper "fingers" poke out or vibrate to signify different Braille letters?

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