USB Serial Adapter questions

This forum is for Marvell Kirkwood devices such as the GoFlex Home/Net, PogoPlug v1/v2, SheevaPlug, and ZyXEL devices.

USB Serial Adapter questions

Postby woody » Fri Dec 14, 2012 4:12 pm

I'm working on a home control project that uses an X10 controller with a serial port. I dug up an old USB serial adapter that I had lying around. I plugged it in and the Pogoplug seems to recognize it ok, but I noticed that the adapter quickly gets warm to the touch.

My question for anyone else who is using a USB serial adapter is whether it's normal for these things to get warm? I'm concerned that I might burn out the power supply in my Pogoplug if this thing draws too much power. Anybody have any suggestions about this?
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Re: USB Serial Adapter questions

Postby karog » Fri Dec 14, 2012 4:44 pm

I have a USB to serial to my serial X10 controller plugged into my Pogo E02 (USB serial does not seem to work on the version 3 pogos) and it works just fine. Honestly, I cannot tell where the USB to TTL conversion is done in my cable as the USB end looks like any standard USB end and the serial end looks pretty standard too. In any case, I have no heat issues at all.

To control X10, I have a java program which requires a serial library (RXTX) to bridge java and the serial driver. But it works well.
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Re: USB Serial Adapter questions

Postby WarheadsSE » Fri Dec 14, 2012 8:55 pm

I use the CM19A USB radio module with mochad :)
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Re: USB Serial Adapter questions

Postby woody » Fri Dec 14, 2012 9:45 pm

$this->bbcode_second_pass_quote('karog', 'I') have a USB to serial to my serial X10 controller plugged into my Pogo E02 (USB serial does not seem to work on the version 3 pogos) and it works just fine. Honestly, I cannot tell where the USB to TTL conversion is done in my cable as the USB end looks like any standard USB end and the serial end looks pretty standard too. In any case, I have no heat issues at all.

To control X10, I have a java program which requires a serial library (RXTX) to bridge java and the serial driver. But it works well.



The adapter I have is about 2 inches long and plugs into a standard USB cable. It's supposed to have standard PL2303 chipset made by Prolific, but it may be a counterfeit. I just don't want to leave something plugged in that might burn out the Pogoplug. I notice that this adapter gets warm when I plug it into other computers, so it's not just the Pogoplug. I don't know if getting warm is typical for these devices or if this one is defective.
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