Darren Arnottfavicon.ico2009-04-14T21:38:09.163331-07:00Darren Arnott 2010www.metebelis3.comhttp://metebelis3.com/DasBlogProject Hymiehttp://metebelis3.com/PermaLink,guid,543904eb-d77c-4d41-a7eb-c1aedab9385c.aspx2009-04-12T14:36:22.832-07:002009-04-14T21:38:09.163331-07:00<p>
Project Hymie grew out of a need to remotely control an APC AFX20 Data Centre Air
Conditioner. The site where this unit is housed suffered from unreliable power supply
and brownouts were quite frequent. Often after a brownout the air conditioner would
go into fault and a manual reset was required. If this occurred outside of business
hours it meant a long drive to the office to press 3 buttons to reset the unit. If
the unit wasn't reset with in 90 minutes the equipment in the server room would begin
to automatically shutdown as a protection from overheating.
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Unfortunately there are no options from APC to remotely control this unit.
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Hymie consists of a web server on a circuit board, a relay board, 3 solenoids, a webcam
and some quick grip clamps.
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<p>
Hymie can be controlled via a VPN connection to an internal website. The site displays
the server room temperature, air conditioner status and it shows what is currently
displayed on the AFX20 LCD screen.
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The solenoids control the alarm, enter and on/off buttons allowing alarms to be viewed
and cleared and the unit to be restarted.
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Testing the Parts
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Hymie fully assembled and working
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Hymie installed and operational from the web interface
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