Ultrasonic Sensor Module HY-SRF05, lebih presisi dari HC-SR04.
Product description: Ultrasonic sensors overcome many of the weaknesses of IR sensors - they provide distance measurement regardless of color and lighting of obstacles. They also provide lower minimum distances and wider angles of detection to gaurantee that obstacles are not missed by a narrow sensor beam. This particular model is an upgrade from the lower precision HCSR-O4. This has 5 pins and can be used in 1-pin trigger/echo or 2-pin.
Measurement Procedure & Formula: Send a 10 uS wide pulse to the sensor on the Trigger Pin. The sensor will automatically send out a 40 kHz wave. Begin monitoring the output from the Echo Pin and When the Echo Pin goes high, begin a timer. When the Echo Pin goes low, record the elapsed time from the timer and use the following conversion formula: Distance (in cm) = (elapsed time * sound velocity (340 m/s)) / 100 / 2 Note: we divide distance by 2 because the sensor returns the round trip time, which doubles the distance measurement. Specifications feature:
Trigger Pin Format: 10 uS digital pulse Sound Frequency: 40 kHz Echo Pin Output: 0-VCC Echo Pin Format: output is DIGITAL and directly proportional with range. See our conversion formula above. Measurement Range: 2cm to ~4.5m Measurement Resolution: 0.3cm Measurement Angle: up to 15 deg Measurement Rate: 40 Hz Supply Voltage: 4.5V to 5.5V Supply Current: 10 to 40mA Working temperature:-20C-+60C Size: 45x21mm (L x W) Connector: standard 5-pin male connector which can plug directly into breadboards.