https://github.com/pbrunot/stenturaarduino

Emulate stentura SRT 200 stenograph machine serial protocol on arduino
https://github.com/pbrunot/stenturaarduino

Last synced: about 1 month ago
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Emulate stentura SRT 200 stenograph machine serial protocol on arduino

• Host: GitHub
• URL: https://github.com/pbrunot/stenturaarduino
• Owner: PBrunot
• Created: 2015-11-15T08:29:27.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2015-12-13T21:38:20.000Z (about 9 years ago)
• Last Synced: 2023-04-10T19:58:32.987Z (almost 2 years ago)
• Language: Python
• Size: 16.2 MB
• Stars: 2
• Watchers: 2
• Forks: 3
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# StenturaArduino

The goal of this project is to make a US Stentura 200 SRT stenograph machine compatibile with italian stenotype system.

Since I was not able to reverse engineer RS232 pin layout, I used an Arduino Micro to interface switches and convert data.

I did not implement the Stentura SRT Protocol, but a simpler one used by WinSteno 2000 softare.

# Story of the project

Reverse engineer serial pin layout - FAIL

 > does not work maybe custom voltage are used?

 > there's a 3k5 resistor on I/O after MAX232 TTL to RS level converter

 > need to buy stentura srt cable and try again

Interface an arduino controller to the key latches board - WORKS

 > he did the hardwork before me: https://github.com/balthamos/steno-arduino

Italian SRT 200 machine - WORKS

 > On italian market, the distributor company changes all the boards with a custom PIC and custom protocol. I reversed engineered the WinSteno protocol to be compatible with PC Software used by italian stenotypists.

 

# Next steps

1. Reverse engineer RS232 with stentura srt cable (so that other people can save 30$ )

2. Document arduino board layout / develop a PCB for more robust handling

3. Develop a Plover driver using WinSteno protocol, just to get rid of proprietary software...