· The module has stable performance and accurate distance measurement.
· The high precision of the module, the ultra-close blind zone (2cm), and the stable ranging is a strong basis for this product to successfully enter the market.
· The working principle of the module: using IO trigger to measure the distance, give a high level signal of at least 10us; the module automatically sends 8 40khz square waves to automatically detect whether there is a signal return; if there is a signal return, a high level is output through IO, The duration of the high level is the time from emission to return of the ultrasonic wave.
· Test distance = ((Duration of high level)*(Sonic :340m/s))/2
· HC-SR04 ultrasonic distance sensor is very suitable for all projects that need distance measurement, such as avoiding obstacles.
1: Use voltage: DC5V
2: Quiescent current: less than 2mA
3: Level output: high 5V
4: Level output: bottom 0V
5: Sensing angle: <15°
6: Detection distance: 2cm-450cm (0.8~177 inch)
7: High precision: up to 0.3cm (0.12 inch)
8.Wiring Mode：VCC, trig (control terminal), echo (receiving terminal), GND How to use this product: one control port sends a high level of more than 10US, you can wait for high level output at the receiving port.
As soon as there is output, you can start the timer to count. When the port becomes low level, you can read the value of the timer. At this time, it is the time of this ranging to calculate the distance. Such continuous periodic measurement, you can The value of your mobile measurement is reached.
4 X HC-SR04Ultrasonic Sensor