Jozef Tesár
More ideas from Jozef
Ultrasonic transducer modules are an easy way to add distance measuring capability to your Pi. The device shown in the photo has 2 power pins, 1 trigger pin and 1 echo pin.

Welcome to week three of our Urban Sensor Hacks series of live hangouts with Master Makers who are doing amazing things in environmental data collection using off-the-shelf and open source technology.