Help with light sensor - Raspberry Pi Forums

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hi everybody, not sure if post follows guidelines of forum nor if in right group, apologize if not.
have no clue of electronics design (i work on software design) , need solve following:

have build sort of fingertip keyboard using light detecting sensor, i.e. detect when finger covers senor.
sensor (photo resistor or diode or similar) mounted on plastic box depicted in attached image where>
yellow sensor, cyan plastic box, dark grey opaque coating, blue water (right part outside, left part inside waterproof box), pink fingertip.
sensor should connected digital input port of raspberry pi, when finger covers sensor port should detect a logic high, otherwise low.
there 10 of such sensor in box.

suggest design? afraid need complete schematic , component list since have no electronics knowledge...

help!



raspberrypi



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