Maker Pro
Maker Pro

Serial Port Transmitting

victor101

Oct 27, 2011
2
Joined
Oct 27, 2011
Messages
2
I need to know when my pc is sending data to my printer. I have designed this circuit, is it safe to use? Don't want to blow up my pc or printer port.
It seems to work ok.
 

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(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
Moderator
Jan 21, 2010
25,505
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Jan 21, 2010
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25,505
Seems fine. I'd just replace the optocoupler with a regular red LED though.
 

victor101

Oct 27, 2011
2
Joined
Oct 27, 2011
Messages
2
The other part of the opto goes to my PLC. It is either blinking or steady on to the plc input.
 
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