HC-SR04-P Ultrasonic Module Distance Measuring Transducer Sensor for Arduino New

Description: Descriptions: Product introduction:HC-SR04-P is a wide voltage ultrasonic distance measuring module. The module form factor and software are fully compatible with older versions of the HC-SR04; it can be seamlessly switched with older versions of the HC-SR04. The low 3V operating voltage allows direct connection to 3.3V powered MCUs. Features.Wide voltage operation:3V-5.5VWith HC-SR04 software and hardware dimensionsFully compatibleDetection Distance: 5V:2cm - 450cm5V: 2cm - 450cm3.3V: 2cm - 400cmDetection angle: <15°Adopt industrial grade MCU, working temperature: -20℃-80℃. Module Working Principle.(1)Use IO trigger ranging, give at least 10us high level signal, the actual 40-50uS good effect.(2) The module automatically sends 8 40khz square waves.(3) A signal is returned, a high level is output through the IO, and the duration of the high level is the time of the ultrasonicwave from transmission to return time.(4) Test distance = (high level time * speed of sound (340M/S))/2. Application Notes.1:This module should not be connected with electricity, if it is to be connected with electricity, let the Gnd of the module be connected first.end of the module first. Otherwise, it will affect the work of the module.2:When measuring the distance, the area of the object to be measured is not less than 0.5 square metres and should be as flat as possible.Otherwise, it will affect the test result.3:If the test surface is not very regular or when testing long-distance objects, you can use multiple measurements to correct.measurements to correct it. Influence of external environment on ultrasonic distance measurement.The influence of the environment on ultrasonic measurement:(1) the effect of air temperatureSound travel time is affected by air temperature to the extent of 0.17% / K. That is to say, the speed of sound at 40 ℃ relative to 20 ℃ changes by+3.4%, so the measurement distance also changes by about +3.4%. However, if the selected ultrasonic sensor has a temperature compensation function, this effect is negligible.(2) The effect of air humidityFrom dry air to saturated humidity in the air, the speed of sound zui more than 2% increase. Therefore, the measurement distance change MAX is only 2%.In the actual site, the air humidity change will not be so large, this effect is generally less than 1%.(3) The effect of air pressureIn a fixed location, the normal air pressure fluctuations of ± 5%, will cause the speed of sound fluctuations of about ± 0.6%.(4)Influence of airflowWhen the wind speed is greater than 50km/h, the change in the speed and direction of sound waves will be greater than 3%. In the field use, only a few centimetres near the surface of the measured object airflow is likely to be greater than 20km / h, and perpendicular to the measurement direction, so the impact on the measurement results can be ignored.(5) The effect of oil mistAs long as the oil mist is prevented from settling on the effective surface of the ultrasonic transducer, its influence can be avoided. Package include: According to your choice. Payment: PayPal, PayPal Credit, MasterCard, Apple Pay, Google Pay...are all supported. Shipping: Please make sure your address 100% right. Return Policy: If you are not satisfied with the item,any problem,please contact with us before you give a negative feedback,because it doesn't help you at all.we will try our best to help you solve the problems. Feedback: Your satisfaction is very important for us.If you are satisfied with our item or service,please give us a positive feedback and 5-Star DSRs rating. Contact Us: We are very glad to help you,please feel free to contact us whatever any problems.Due to high volume of daily incoming emails and time zone difference,please allow 24 hours for us to reply. About Item: For the funcitonal products in our shop,we make sure that the functions are the same as description,but the actual color and shape may looks a little different from pictures because of the technical improvement and manufacturing variance.Please be advised before you bid.

Price: 3.55 USD

Location: ShenZhen

End Time: 2024-10-26T20:53:16.000Z

Shipping Cost: 5 USD