Technical Parameters:
1.Working Voltage: 5V(DC)
2.Static current: Less than 2mA.
3.Output signal: Electric frequency signal, high level 5V, low level 0V.
4.Sensor angle: Not more than 15 degrees.
5.Detection distance: 2cm-450cm
6.High precision: Up to 0.3cm
7.Input trigger signal: 10us TTL impulse
8.Echo signal : output TTL PWL signal
Mode of Connection
1.VCC
2.trig(T)
3.echo(R)
4.GND
Use Method
Supply module with 5V, the output will be 5V while obstacle in range, or 0V if not.The out pin
of this module is used as a switching output when anti-theft module, and without the feet when
ranging modules.
Note
the module should be inserted in the circuit before been power, which avoid producing
high level of misoperation;if not, then power again.
Module Working Principle:
1.Adopt IO trigger through supplying at least 10us sequence of high level signal.
2.The module automatically send eight 40khz square wave and automatically detect whether receive
the returning pulse signal.
3.If there is signals returning, through outputting high level and the time of high level
continuing is the time of that from the ultrasonic transmitting to receiving. Test distance =
(high level time * sound velocity (340M/S) / 2.
Note : This module is not suitable to connect with electric power, if you need to connect this
module with electronic power,then let the GND terminal of this module to be connected
first,otherwise, it will affect the normal work of the module.
HC-SR04-P
HC-SR04-P is a wide voltage range of ultrasonic ranging module. Module size and software with the old version of HC-SR04 is fully compatible with the old version of HC-SR04 can seamlessly switch. As low as 3V minimum operating voltage, so that it can be directly connected with the 3.3V power supply MCU.
Product Features:
1. Wide voltage operation: 3V-5.5V
2. Fully compatible with HC-SR04 software and hardware dimensions
3. Detection range:
5V: 2cm ~ 450cm
3.3V: 2cm ~ 400cm
4. Detection angle: < 15 Angle
5. Use of industrial grade MCU, operating temperature: -20 Celsius - 80 Celsius
Note
1. This module should not be charged connection, if you want to live connection, then let the module Gnd first connected. Otherwise it will affect the module work.
2. Ranging, the measured object area of not less than 0.5 square meters and to try to level. Otherwise it will affect the test results.
3. If the test surface is not very regular or when testing long-range objects, you can use multiple measurements to correct.
HC-SR04+
Product introduction:
The HC-SR04+ is a wide voltage operation ultrasonic ranging module.
The module's external dimensions and software are fully compatible with the old version of the HC-SR04; it can be seamlessly switched with the old version of the HC-SR04. The minimum operating voltage of the address 3V allows it to be directly connected to a 3.3V powered MCU
Features:
Detection angle is less than 15 degrees
Industrial MCUs
Working temperature -20~80 degrees Celsius
Detection distance: 5V 2cm~450cm; 3.3V 2cm~400cm
Wide Voltage Operation: 3V-5.5V Full Compatibility with HC-SR04 Software and Hardware Dimensions
Board connection mode:
VCC, trig (control end)
Echo (receiver end)
Out (empty pin, GND)
Note:
The TRIP pin is an internal pull-up resistor of 10K. Use the IO port of the microcontroller to pull the TRIP pin low and then give a pulse signal of more than 10us.
The Out foot is a switch output pin when the module is used as a theft protection module. The distance measurement module does not use this foot!
Note: The module should be plugged in on the circuit board to be powered on to avoid high level of malfunction. If it is generated, re-power can be solved.
HC-SR04 Test Board
Features:
Onboard STM8S103 high-performance microprocessor
With digital display
Data can be output through the serial port
Effective measuring distance: 3cm - 400cm
Display unit: cm
The biggest error: about 1%
Working voltage: 5V
Interface Description:
VCC, GND: 5V power interface
2.54mm white socket: 5V power supply interface
TX: module serial port to send foot
RX: module serial port receive pin
NRST, SWIN: reserved STM8 program download port
Instructions for use:
Measurement distance can be displayed simultaneously through the digital tube and serial port
Digital display, directly plug in the ultrasonic module, access 5V power supply
Serial port output: plug in the ultrasonic module, the module's VCC, TX, RX, GND are connected to USB to TTL module 5V, RX, TX, GND, serial communication baud rate 9600, the output format: "D: XXX \ r \ n ", Where XXX represents the distance, the unit is CM
Precautions:
Ranging, the measured object area of not less than 0.5 square meters and should be as flat as possible and slightly stronger reflective ability, otherwise it will affect the test results.
Effective measuring distance 3cm-400cm, beyond this range may result in data is not allowed or display 000
HC-SR04 CS100A
The new version of HC-SR04 has far better performance than the old versions of HC-SR04 and US-015. When the ranging accuracy is higher than that of the old versions of HC-SR04 and US-015, the ranging range is farther, up to 6 meters. General ultrasonic ranging module. Using CS-100A ultrasonic ranging SOC chip, high performance, industrial grade, wide voltage, low price, cost breakdown bottom price, only half the price of ordinary ultrasonic ranging module, and performance far exceeds ordinary ultrasonic ranging module. The performance is the same as US-025A, all adopt CS100A chip, the interface is fully compatible.
