12 Volt Trigger serial/com to amplifier HOW?

[samsonite]

I would like to use a simple com port to control the 12 volt trigger on my amp. I understand I can use port 4 and 5 of the com port but I don't know how to control the state of the com port with girder to turn on/off the 12 volt supply out of the com port???
I suppose this will be a type of relay.

Please Help! I wish to keep the task of turning the amp on from my HTPC as simple as possible every time I put the machine into/out of standby.

Thank You in advance.

[samsonite]

Is there a way to simply turn on/off a usb port? That would get me 5 volts which is enough for my amp's 12 volt sensor.

[jwilson56]

May not be the best way but its simple


http://www.smarthome.com/2010/X10-Universal-Module/p.aspx

If your using X10 already.


Also spotted this

http://cgi.ebay.com/USB-Relay-Board-I-O-ADC-PWM-RS232-Serial-controlled-/110584377812?pt=LH_DefaultDomain_0&hash=item19bf57b1d4

[blubberhoofd]

I recently found these for rs232:

http://www.windmeadow.com/node/4

http://stats.the-abbeys.com/blog/index.php?entry=entry060116-095620