Siduri named after the Sumerian god of happiness and merriment, is a smart coaster for your drinks. It recognizes when a glass is near empty and then glows yellow to alert waiters that you will be in need of a refill soon.
Designed specifically for lounge and club settings, Siduri helps nightlife revelers politely draw the attention of barmaids and helps bartenders to keep the drinks flowing.
The coaster is powered by Ardunio and uses an FSR sensor that recognizes the difference in the weight of a drinking glass. A button located near the base of the coaster allows bar staff to calibrate the coaster to an unlimited amount of drinking glass types into the coaster’s memory. Hidden under the white acrylic top are three surface mount LED’s that breath a soft yellow light when the FSR sensor recognizes when a glass is 3/4 empty. The remaining materials were laser cut out of 1/8” wood to give the coaster a manly, yet classy aged feel.
If you would like to make your own smart coaster, here is how I did it: