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Subject: RE: Simple wireless light controlled through EPICS?
From: Mark Rivers <rivers@cars.uchicago.edu>
To: "'Gomella, Andrew (NIH/NHLBI) [F]'" <andrew.gomella@nih.gov>
Cc: "tech-talk@aps.anl.gov" <tech-talk@aps.anl.gov>
Date: Thu, 11 Jul 2013 22:28:41 +0000
Measurement Computing makes USB relay boxes.

http://www.mccdaq.com/usb-data-acquisition/USB-ERB08-Series.aspx

You can wire your lights through these relays and control them from EPICS.  The 8-channel version is $279.

Mark


-----Original Message-----
From: Gomella, Andrew (NIH/NHLBI) [F] [mailto:andrew.gomella@nih.gov] 
Sent: Thursday, July 11, 2013 5:22 PM
To: Mark Rivers
Cc: tech-talk@aps.anl.gov
Subject: RE: Simple wireless light controlled through EPICS? 

The interlock came hardwired into our x-ray controller box. It's value can be read with the asyn stream driver and is a BO variable that reads whether the key is in the armed position or not. I was hoping to use this value to trigger lights on or off.  Unfortunately I can't modify anything with the x-ray controller, so I figure there has to be some sort of USB light on the market that runs on serial commands? Or maybe such a specific thing does not exist and requires a micro-controller and some work to make. 
________________________________________
From: Mark Rivers [rivers@cars.uchicago.edu]
Sent: Thursday, July 11, 2013 6:02 PM
To: Gomella, Andrew (NIH/NHLBI) [F]; tech-talk@aps.anl.gov
Subject: RE: Simple wireless light controlled through EPICS?

How is your interlock done?  Simple relays or with a PLC?  Our laser interlocks here at APS use inexpensive PLCs, and they directly operate the warning lights outside the enclosure.

Mark


-----Original Message-----
From: tech-talk-bounces@aps.anl.gov [mailto:tech-talk-bounces@aps.anl.gov] On Behalf Of Gomella, Andrew (NIH/NHLBI) [F]
Sent: Thursday, July 11, 2013 4:57 PM
To: tech-talk@aps.anl.gov
Subject: Simple wireless light controlled through EPICS?

Anyone have any suggestions for a simple way to control a light with EPICS? It does not need to be bright, even a small LED will do. Basically I'm trying to have indicators on several doorways to show the current status of the interlock on our x-ray source (which is already a PV).

In the ideal scenario it would be connected to wifi so that ethernet/usb cables do not need to be run everywhere. I was thinking of maybe trying to get the "Belkin WeMo Home Automation Switch" to work with EPICS, it is basically a power plug that connects to WiFi. But it is probably easier to find some USB LEDs and run cables.

I know some beamlines at APS have EPICS controlled lights, so wondering if anyone has ideas?


Thanks!
Andrew


References:
Simple wireless light controlled through EPICS? Gomella, Andrew (NIH/NHLBI) [F]
RE: Simple wireless light controlled through EPICS? Mark Rivers
RE: Simple wireless light controlled through EPICS? Gomella, Andrew (NIH/NHLBI) [F]

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