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Based on a simple spring-loaded microswitch, this is a cumulative timer for how long a practice seat is occupied. Could feature weekly / monthly records, and / or various other features.
On second thought, this could / should be expanded to record occupany times for various other furniture / locations
including couch, bed, dining room, treadmill, floor in front of refrigerator, etc.
[link]
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I baked part of the first paragraph in 1976, using a D-cell and a mercury-column hour meter, curiously available at RadioShack in those days. |
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[Looked for a link to the device, couldn't find one.] |
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The piano in Dabney Lounge was used about 6.5 hours a day. |
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Accelerometer with graphing capability? |
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