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I have an device that is interfaced with RS-232 that requires power on Pin 6 at 5V and Pin 5 as ground to power the device.

Is it possible to do this with an USB to RS-232 Converter?

If not, what are the other options I have that don't require being an master in electronics, maybe something that's pre-built?

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migrated from Nov 30 '10 at 1:11

This question came from our site for professional and enthusiast programmers.

This should be moved to – Peter Loron Nov 29 '10 at 19:24

You could always go with an Arduino and wire up a serial port to the outputs where you could easily send a 5V signal and hook to ground.

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I second the Arduino. We use it at work for remote data logging to our mysql DB. – benhowdle89 Nov 29 '10 at 18:25

What are you trying to do with the RS-232 device? Hook it up via USB to a computer? Simply power it without hooking anything up?

Arduino or other prototyping board would work, as would hacking the RS-232/USB adapter.

If you simply need power, you can hack up a wall wart, but be sure to check the output voltage...many of them are not regulated well and will output a significantly higher voltage than the label says if there is not much of a load on them.

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Thanks,I have one of these laying around : Going to test it out at 4.5V I only need .15a – cideas Nov 29 '10 at 22:30

If your device has low power consumption and you can open your USB to RS-232 converter, then you can connect the +5V and GND that from the USB to them.

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