Hi Serkan,
I understand you are currently using a printer with a serial port.
A simple solution could be a DOS compatible printer with a centronics parallel port.
Some low cost printer are GDI printer only. (Windows host-based printers).
These printes will not work if connected to a DOS based PC or microcontroller.
For a quick test, boot the PC from DOS and type the DOS internal command:
DIR *.* > PRN
(Make sure the parallel port is set as "Normal" in PC BIOS).
If you see the output on paper the printer understands "text only".
If the first test is OK, then try to see if the printer supports the
Epson Escape Codes or the Hewlett-Packard PCL commands.
Interface to your portable recorder:
Using a PIC, build a serial to parallel converter. The centronics pin 18 of
the printer will supply the necessary current for the PIC inside the converter.
See this link about PIN 18, search text "VCC (aka SLCT)".
http://nemesis.lonestar.org/referenc...entronics.html
This solution is compatible with the current version of your portable recorder.
Best regards,
Luciano
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