3Pcs HC-SR04 Ultrasonic Distance Measuring Transducer Sensor Module for Arduino

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3Pcs HC-SR04 Ultrasonic Distance Measuring Transducer Sensor Module for Arduino
Product Description
Introduction
This kit includes three HR-SR04 ultrasonic modules. As the ultrasonic has strong directivity, slow energy consumption and far spread distance in the media, so it is commonly used in the measurement of distance, such as range finder and position measuring instrument. Using ultrasonic is more rapid, convenient, simple to calculate and more easier to achieve real-time control, so it has also been widely used in the development of mobile robots.
Ultrasonic detector module can provide 2cm-450cm non-contact sensing distance, and its ranging accuracy is up to 3mm, very good to meet the normal requirements. The module includes an ultrasonic transmitter and receiver as well as the corresponding control circuit.
Working Schematics
Please refer to the working sequence as below：
1. First pull down the TRIG, and then trigger it with at least 10us high level signal;
2. After triggering, the module will automatically transmit eight 40KHZ square waves, and automatically detect whether there is a signal to return.
3. If there is a signal return, through the ECHO to output a high level, the duration time of high level is actually the time from emission to reception of ultrasonic.
Test distance = high level duration * 340m/s * 0.5.
Parameters
1)Working Voltage: 0.5V(DC)
2)Working Current: 15mA
3)Detecting Range: 2-450cm
4)Detecting Angle: 15 degrees
5)Input Trigger Pulse: 10us TTL Level
6)Output Echo Signal: output TTL level signal (HIGH), proportional to range.
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If you have any questions about the item, please contact me via eBay message.
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It takes 6-13 working days to arrive most European countries using standard shipping.
Some European island countries, overseas territories and South American countries need to arrive in 15-35 working days.
For urgent parcel, you can email us and choose Fedex, DHL, UPS, EMS etc., but you need to pay extra fee.
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We absolutely stand behind our products. All of our items will be checked and tested before shipment to ensure 100% performance.
We also offer 30 day money back guarantee if you are unsatisfied for any reason whatsoever. We will refund the entire cost of the item not including the shipping and insurance charges. Our aim is 100% customer satisfaction!
If you are unclear about product usage, please feel free to contact us.
We will offer your detailed instructions for use.
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contacting us, we will always do our best to help solve your problem and offer you a satisfactory response. Thank you very much for your support and understanding.
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