Msu's racernet Sr04 sensor ultrasonic arduino noticed checking differences between Srf04 technical documentation
Integrator for HC-SR04 UltraSonic Range Finder - CircuitLab
Hc-sr04 ultrasonic sensor with arduino tutorial (5 examples) Integrator for hc-sr04 ultrasonic range finder Circuit ultrasonic sonic ultra range ranging finder circuits schematic module pdf robot audio transducer electronics gr next low consumption current
Hc sr04 distance datasheet transducer measurements indicates several features range schematic
Sr04 hc circuit integrator ultrasonic circuitlab finder range description .
.
MSU's RacerNet
Integrator for HC-SR04 UltraSonic Range Finder - CircuitLab
HC-SR04 Ultrasonic Sensor with Arduino Tutorial (5 Examples)