Serial Printer Problem

Archiver

Hi

I am having problem printing with my "reciept Printer"
I was wondering do I need a rs232 driver when I am connecting BS2 to
printer through 25 D-sub, My printer is working on 3to15 as high and
-3 to -15 as high.

But the stamp is working on TTL(0 to 5)

Can anyone please help me???

Archiver

Some serial devices will tolerate TTL levels, many won't. You might in
fact need a line driver (like a MAX232 or equivalent). You may also
need to check your baud settings.

-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office

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Original Message

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From: nima_jahedi [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=RP3MMbIfukt73wYG2U8P5fhSqDsIkhpc91mALKHWKmNNaMa-daB0Laka8uVFMjcUuaS7pm3s1qllBhIo]nima_jahedi@y...[/url
Sent: Thursday, April 08, 2004 11:34 PM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Serial Printer Problem


Hi

I am having problem printing with my "reciept Printer"
I was wondering do I need a rs232 driver when I am connecting BS2 to
printer through 25 D-sub, My printer is working on 3to15 as high and
-3 to -15 as high.

But the stamp is working on TTL(0 to 5)

Can anyone please help me???

Archiver

> I am having problem printing with my "reciept Printer"
> I was wondering do I need a rs232 driver when I am connecting BS2 to
> printer through 25 D-sub, My printer is working on 3to15 as high and
> -3 to -15 as high.
>
> But the stamp is working on TTL(0 to 5)
>
> Can anyone please help me???

Get a Max232 ($1.50):
<http://dbserv.maxim-ic.com/quick_view2.cfm?pdf_num=1798>.

--
Enjoy,
George Warner,
Schizophrenic Optimization Scientists
Apple Developer Technical Support (DTS)

Archiver

As long as you drive your printer with the 9-pin programming port
(pin 16)and have both the transmit and receive circuits properly
connected to the printer, it should work without any extra hardware.
Note that some serial printers expect to see pins 4-5 jumpered at the
printer.
If for some reason you have to drive the printer from another set
of pins, then the max232 is the way to go.

Tom Sisk



--- In basicstamps@yahoogroups.com, "nima_jahedi" <nima_jahedi@y...>
wrote:
> Hi
>
> I am having problem printing with my "reciept Printer"
> I was wondering do I need a rs232 driver when I am connecting BS2
to
> printer through 25 D-sub, My printer is working on 3to15 as high
and
> -3 to -15 as high.
>
> But the stamp is working on TTL(0 to 5)
>
> Can anyone please help me???