This is a device that will tell you what wax to use on your skis. This app is written in ArduinoC and HTML/Vanilla JavaScript
Upload the code to the Particle Photon Developer page Flash to the Photon Put the photon on the weather shield Put the photon/weather shield into a box and place outside
Put the HTML on a webserver and navigate to the webpage to see the data and see what wax you should use