HC-SR04 Echo Range Finder and xIOT Windows
Use echo location to find the distance of objects around your PI2.
Take your Raspberry PI2 with Windows 10 IOT Core, Explorer HAT Pro, a PNP transistor, a few various resistors and some hookup wires and you can use the simple code to get a distance measurement from your HC-SR04 sonic range finder!
See the sample project on GitHub for code.
Uses the Xamling-IOT Nuget package.