Robot-Electronics-Small-Single-Transducer-Ultrasonic-Range-Finder-Robot-Electronics-SRF01-This-single-transducer-ultrasonic-range-finder-is-mounted-to-a-small-footprint-PCB-making-it-the-ideal-distance-sensor-for-small-robotics-applications-The-SRF01-sends-data-via-a-single-wire-serial-connection-which-can-be-interfaced-with-PICAXE-Arduino-or-similar-microcontrollers-User-configurable-addresses-mean-up-to-16-modules-can-be-used-on-the-same-microcontroller-Robot-Electronics-SRF01-The-World