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Sending bits of information is a mania. Why not to send the whole packet?
You need to find out EXACTLY what it requires, you've been saying RS232 all through the thread, then suddenly you mention it's connected to a PS2 port, which provides 5V power for a keyboard.
Does it work if you connect it directly to a proper RS232 port?, often these scanners emulate a keyboard, which is why it connects there.
actually when i connected the barcode directly through rs232 it didn't power up..
the barcode has no power supply
this not a problem with communicating . it's a problem of powering up this barcode without a PC.
Hayato.. Ps2 ports have supply lines for +5 volts. They were designed for it. They're 5 volt serial ports too..
i connected the Vcc and gnd to pin # 4,3 in ps/2 connector
but again the power didn't reach the device
i thought the device will start regardless of data and clock pins values
should i connect the clock and data before it can start ?
i connected the Vcc and gnd to pin # 4,3 in ps/2 connector
but again the power didn't reach the device
i thought the device will start regardless of data and clock pins values
should i connect the clock and data before it can start ?