This is a device I made in 1990 for use by elderly forgetful patients who may not remember medication times.
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In essence this medication delivery device is preloaded with one weeks medications. The internal timers then rotate the platter such that the medications are visible to be taken. A light flashes and buzzer sounds until the medications are removed (triggering an infrared beam). It has an internal rechargeable battery which can last a week if unplugged. There are safety interlocks. The most complicated part was designing a programmable timer for up to 4 medications times from scratch using discrete parts.

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Photo Date:1990