Product Description
(1) using lO trigger ranging, to at least 10us of high-level signal;
(2) the module automatically sends eight 40khz square wave, automatically detect whether there is signal return;
(3) there is a signal return, through the lO output of a high , high duration is the time from the launch to the return of ultrasound.
Test distance = (high time*sound speed (340M / S ) / 2;
Onboard STM8S103 high performance microprocessor.
Digital tube display for easily viewing data result
Working Voltage: 5V
Data can be output through the serial port
Display Unit: cm
Maximum error: about 1%; Effective Measurement Distance: 3-400cm
Packet List:
HC-SR04 Ultrasonic Sensor Module *1
HC-SR04 Ultrasonic Control Board*1
Notes:
1. This module should not be connected electrically, if it is to be connected electrically, let the GND end of the module be connected first, otherwise it will affect the normal work of the module.
2. When measuring the distance, the area of the object to be measured should be not less than 0.5 square metres and the plane should be as flat as possible, otherwise it will affect the results of the measurement.
Notes:
1. This module should not be connected electrically, if it is to be connected electrically, let the GND end of the module be connected first, otherwise it will affect the normal work of the module.
2. When measuring the distance, the area of the object to be measured should be not less than 0.5 square metres and the plane should be as flat as possible, otherwise it will affect the results of the measurement.
