[BRLTTY] TSI braille display protocol

[Songpakorn Punongong]

Hi

Maybe you can adapt my code.

My braille display prototypes are based on ESP32. They communicate with
Android smartphones via Bluetooth.
The protocol for braille code in Bluetooth strings is very simple. It
starts with [brl] followed by a hexadecimal number for each column of
braille stream.
Each bit of that number represents each row of braille cells. For example,
the bluetooth string "[brl]703370337033" will display "LGLGLG" on the
device.

I have c code for the ESP32 TTGO-T7 board and a smartphone app created on
Kodular to control it via Bluetooth.

The app apk can be downloaded on my website
https://www.read-ring.com/downloads
I don't know how to share a Kodular project without exporting to a large
file, though.

Cheers
Song

On Fri, Nov 19, 2021, 03:18 discapacidad5 <discapacidad5 at gmail.com> wrote:

> Hi, I don't speak English, I'm using the google translator, I hope they understand me, my language is Spanish
>
>
> I am developing a braille line with the ardiuno IDE and esp32 I have all the hardware but my problem is precisely that I do not fear how to communicate with the esp32
>
> I have tried to connect the serial monitor of ardiuno and connect the esp32 by bluetooth and in the output of the serial port I get pure question marks and unreadable characters
>
> I would like help to develop the software that would go in the esp32 that exchange data with the devices
>
>
> my project consists of a very low cost braille display probably anyone can manufacture with less than $ 50 the idea is to create everything and make it available so that anyone can print their own braille display on a 3d printer and added the esp32 card and the driver can make your own braille line I hope someone can help me
>
>
> El lun, 4 oct 2021 a las 23:23, Songpakorn Punongong (<
> songpakorn at read-ring.com>) escribió:
>
>> Hi Deniz,
>>
>> You are not alone here. I am also developing my own braille display on
>> Arduino learning from c++ code in BRLTTY.
>> Since it is still in the prototyping stage, I still need to learn a bit
>> before asking Dave to deploy the new patch across the BRLTTY platform.
>> We can contact each other directly and share what we've learned and
>> developed to speed up the process.
>>
>> Cheers,
>> Song
>>
>> On Tue, Oct 5, 2021 at 1:55 AM deniz sincar <dsincar29 at gmail.com> wrote:
>>
>>>
>>> Hello again. No, I don’t want to make a braille emulator for now. Just
>>> it was an idea before. I want to show some data from sensors on the braille
>>> display: connecting Arduino board straight to braille display. However, the
>>> function to send serial in Arduino is: serial.print or Serial.println. ok,
>>> I will look to writeCells more, but… I am hardly understanding c++ for now.
>>>
>>>
>>> Отправлено с iPhone
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>>
>>
>>
>> --
>> Songpakorn Punongong, Mr.
>> CEO & CTO
>>
>> ReadRing Co., Ltd.
>> Tax ID: 0105560141347
>> www.read-ring.com
>> 328/1 Memorial Building of Ray C. and Elizabeth Downs, 2nd Floor
>> PhayaThai Road, Thanon Phetchaburi Sub-district, Ratchathewi District
>> Bangkok 10400, THAILAND
>> +66813510162
>> _______________________________________________
>> This message was sent via the BRLTTY mailing list.
>> To post a message, send an e-mail to: BRLTTY at brltty.app
>> For general information, go to: http://brltty.app/mailman/listinfo/brltty
>
> _______________________________________________
> This message was sent via the BRLTTY mailing list.
> To post a message, send an e-mail to: BRLTTY at brltty.app
> For general information, go to: http://brltty.app/mailman/listinfo/brltty
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