Light-up Coaster
DizzyTrout2
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Published:2026-06-08 15:34:16
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I have an idea to make a more simple Lighted Coaster. I will use QRD1113/1114
Reflective object sensor to detect if a drink/cup has been placed on the coaster.
Documentation for the sensor: https://www.sparkfun.com/datasheets/BOT/QRD1114.pdf
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