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- piTelex

Control a historic Telex device with a Raspberry Pi (or PC) in Python 3.

The goal is to connect a historic telex device (teletype) with TW39 protocol or ED1000 protocol to a modern Windows/Linux-PC via USB and/or a Raspberry Pi (via GPIO) with minimal hardware.

One part of the project is the hardware to adapt the current loop for TW39 to modern logic level ports; the same for ED1000. As side effect teletypes with V.10 interface (like TeKaDe FS200 / FS220) can also be connected via USB-adapter or via Raspberry GPIO and handled by the software.

The other part is the Python software to send and receive the serial data (50 baud, 5 data-bits) and decode the "Baudot-Murray-Code" character set (also called "CCITT-2" or "ITA2") to ASCII.

Now that the TTY hardware devices can be connected and controlled, it is time to connect the machines to the outer world.

Several software modules provide connection with other i-Telex devices, IRC or Twitter Servers as well as local services (local typing and printing, logging, archiving and so on).

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Typical and tested teletype combinations:

Computer	Hardware	Protocol	SW-Module	Description
PC-Linux, PC-Windows	CH340 USB-Serial-Adapter TTL + I-Loop-Electronic	TW39	CH340TTY	for mechanical teletypes
RPi	CH340 USB-Serial-Adapter TTL + I-Loop-Electronic	TW39	CH340TTY	for mechanical teletypes
RPi	GPIO on RPi + I-Loop-Electronic	TW39	RPiTTY	for mechanical teletypes
PC-Linux, PC-Windows	CH340 USB-Serial-Adapter V.24 + V.10-Cable	V.10	CH340TTY	for TeKaDe FS200 / FS220
PC-Linux, PC-Windows	USB-Sound-Card + ED1000-Electronic	ED1000	ED1000	for (more) modern electronic teletypes IN DEVELOPMENT

RPi: Raspberry Pi (at least Zero W) with Raspian image

Connection from/to Outer Space

Type	Protocol	SW-Module	Description
i-Telex	TCP/IP	ITelexClient ITelexSrv	i-Telex-protocol (baudot) and ASCII
Telnet	TCP/IP	ITelexSrv	Now part of i-Telex-Server
Screen	Keyboard + Monitor	Screen	for testing and debugging
IRC		IRC	IRC Severs
News	File based	News	RSS Servers
Twitter		[Twitter]/SW_Twitter]	in development

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Build Examples

TW39 Compact USB Interface

• Example with TW39 Compact USB Interface

TW39 Raspberry Pi Interface

• Example with Raspberry Pi

V.10 Interface for TeKaDe FS200Z / FS220Z

• Example with V.10

ED1000 Interface

• Example with ED1000