Controlling Food Intake Speed with Electronic Circuitry

Project Information

Title: Controlling Food Intake Speed with Electronic Circuitry

Subject: Electronics

Subcategory: Electronic Devices / Medical Instruments

Grade level: High School - Grades 10-12

Academic Level: Ordinary

Project Type: Experimental

Cost: Low

Awards: 1st Place, Canada Wide Virtual Science Fair ($250)

Affiliation: Canada Wide Virtual Science Fair

Year: 2013

Materials: 555 Timer, resistors, NAND logic gate, LED

Description: This tool measures eating speeds by counting the user’s mouthfuls per minute (M.P.M). If the user’s M.P.M exceeds the recommended eating speed of approximately 3 mouthfuls per minute, an LED will flash until the user returns the fork to an upright position. A monostable 555 timer circuit counts a seventeen second long signal each time the fork is used. If during this time an internal tilt switch changed position, a logic gate combines these two outputs to produce another signal transmitted to the LED lights, causing them to flicker.

Link: www.virtualsciencefair.org...

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