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Blood Pressure / Bathroom Scale

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Working with Gad Shaanan Designs, an industrial design firm, the team created a low cost bathroom scale and blood pressure monitor pair.   The scale used an Infra-Red (IR) LED to send data to a wall mounted display.   The battery powered scale uses a low cost Microchip PIC16C56 to perform a delta-sigma analog to digital conversion, IR modulation and run-time scale calibration...all in firmware!   The wall unit is based on an Hitachi H8/3027 and is the controller for the blood pressure monitor and LCD display.   The system allowed up to 5 users to store and graph both their blood pressure and weight over 5 measurement periods.


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Last modified: June 13, 2016