Elk M1 Audio Interface (J7)

[phareous]

Just thought I would post the pin out for J7 since it took me awhile to gather it from various sources. I plan to use this to switch audio between the M1, ELK-124, and Homeseer.
 
Pin 1 is on the right looking at the board
 
Pin 8 - white/green - n/c
Pin 7 - green - O/mic in
Pin 6 - white/orange - AUD -/GND
Pin 5 - blue - AUD +/I
Pin 4 - white/blue - DBUS PWR -
Pin 3 - orange - DBUS B
Pin 2 - white/brown - DBUS A
Pin 1 - brown - DBUS PWR 12V+

 

[TurboSam]

If you haven't seen them, this thread and this thread will walk you through some of the details.

 

[bucko]

Or this thread     http://cocoontech.com/forums/gallery/image/685-elk-twa-124-speaker-config/

 

[phareous]

I managed to get it working. I could not get the M1 to turn on output 10 via rules so I ended up wiring in an additonal relay to force power to that pin and enable the TWA (what was done here http://cocoontech.com/forums/topic/15440-using-m1g-micspkr-feed-tofrom-home-automation/#entry131228)
 
Originally I tried to have homeseer control the switching but it was going to make the rules very complicated to have to switch audio, check if the relay finished switching, then speak. Otherwise, it would start speaking before the relay was done switching audio. So instead I put the switching rules on the Elk so the Elk lets homeseer have the audio all the time except when the Elk needs to speak.