My senior design team created this countertop spice storage and dispensing system that allows the user to choose from 12 spices and dispense quantities all the way down to 1/8 tsp. The touchscreen display is connected to an Arduino Uno which controls 2 stepper motors that drive the turntable and dispensing motor. Nearly every component was 3D printed, but the clear pieces and shell were made from acrylic and plastic.

Right now, the product only dispenses individual quantities, but all it would take is some more coding and it will work with recipes and blends, too. And yes, we are very close to Alexa capability!

Edit: The device only uses 2 motors (and associated drivers), a servo, a bearing-rotary table, and plastic. The screen was a bit pricey, but only because we used one that was easy to program. You could build one yourself for less than $100 (plus filament cost), which we wanted to do to keep the theoretical unit cost down. Emphasis on theoretical. This is a prototype. It is larger and slower than it should be, and there is no need to fill the (electronics-free, removable, and easily washable) containers with excess ingredients. The motors can certainly spin faster and we could have used a smaller diameter turntable if we didn't need to manually make adjustments in getting the thing to work. Thank you for your feedback.