[mythtv-users] Detect IRD on/off status via serial port w/photocell

Michael T. Dean mtdean at thirdcontact.com
Sun Aug 29 16:48:07 UTC 2010

  On 08/29/2010 11:15 AM, Michelle Dupuis wrote:
> I would like my channel change script to detect the state of my IRD (dish network cheapy).  I see the IRD has a bright yellow POWER ON led on the front.
> Has anyone tried connecting a photocell to a line on a serial port (eg: CTS) and see if the POWER ON light can be detected that way?  Seems simple....but just slightly above my skill level.

Have you seen http://www.mythtv.org/wiki/DISHNetworkLIRCConfiguration ?  
Specifically the part about discrete power on/power off codes?  (And 
read the text to find out how to use it).


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