[GreenKeys] Teletype 32-ASR / Arduino vs Raspberry Pi

Javier Albinarrate javier at albinarrate.com
Tue Jun 11 17:40:25 EDT 2013


Tony, and ¿that is how you learnt Spanish? ;)

Trammell, great little board you have there, I have been using a PIC based 
one for some time (old laptop with COM port died), which works just fine for 
sending and even for keyboard writing, but falls appart when reading from 
tape, because PICs have no native 5 bits data width support for the UART... 
terribly annoying. I then started looking for Arduino, and got a couple 
boards, one with Ethernet to play, however... I spent nearly $35 for the 
boards now I feel I have simply burnt that money as I am buying a Rapsberry 
Pi for $45.

According to the Raspberry PI wiki/specs the secondary UART supports both 
low speeds, as well as 5 bits data width.
And the thing has ethernet, USB, HDMI, TV out, SD card, can use a WiFi, or 
Bluethooth dongle, has 512MB RAM, has many IO pins to use (like relays for 
turning the TTY on, or buttons for predefined commands, etc), and all that 
for just a couple more bucks than the Arduino. That has been making me 
wonder WHY ON EARTH I spent time with the PICs and Arduino...

Has anyone here tried it?

Regards!

Javier
-----Original Message----- 
From: tony.podrasky
Sent: Tuesday, June 11, 2013 5:18 PM
To: greenkeys at mailman.qth.net
Subject: Re: [GreenKeys] Teletype 32-ASR

I wrote a program to convert ASCII to ITA#2 so
that I could print out my e-mail on the 28-KSR.

I got an extra question mark and installed it
in the typebox where the upper-case BLANK is.
And I put it in up-side-down.

When the program had to translate a non-ITA#2
character, it would just print the up-side-down
question mark and I knew that there was a
character that couldn't be translated.

UE,
W6ESE - tony
NNNN
ZCZC


On 06/11/2013 01:08 PM, Trammell Hudson wrote:
> On Jun 11 2013 1:58 PM, tony.podrasky wrote:
>> What does the interface do about the non ITA#2
>> characters when it receives them?
>
> It eats them for now.  Any suggestions for better mappings?
>

-- 
Tony J. Podrasky | Inventions reached their limit long ago,
                  | and I see no hope for further development.
                  |
                  |         -Julius Frontinus, 1st century A.D.
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