Coke machine level detector

thingiverse

This is a custom ultrasonic level gauge I designed to provide me with a reading of how many cans are left in my vintage Coke machine. It was created in Fusion 360, consisting of 4 printed parts. Three parts make up the housing and one holds an ultrasonic sensor inside the machine to take the readings. The three parts of the housing snap and slide together without requiring fasteners. The base and front face also hold the IC boards in place without tools or fasteners. The full write-up is available on Instructables.com, posted by user ChrisN219. https://www.instructables.com/id/Coke-Machine-Can-Level-Detector/ The second version activates the display screen using another ultrasonic sensor to detect a person walking up to the machine instead of using a push button. The device is powered by an Arduino Nano, a couple HC-SR04 ultrasonic sensors and an SSD1306 style 0.96 LCD screen. It also utilizes a power adapter connector I salvaged from a broken device, allowing me to power it using the USB connector on the Nano or a 12V DC adapter.