Price: 1.07 - 0.67
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1, the module performance is stable, measure the distance accurately. Energy and foreign SRF05, SRF02 ultrasonic distance measuring module and other comparable. Module precision, blind spots (2cm) super close, stable ranging success of this product to the market is strong under! This module is fully Qian Yung-GH-311 anti-theft module
Two main technical parameters:
1: Voltage: DC5V
2: Static current: less than 2mA
3: level output: high-5V
4: level output: the end of 0V
5: Sensor angle: not more than 15 degrees
6: Detection distance: 2cm-450cm
7: High precision: up to 0.3cm
Board wiring, VCC, trig (control side), echo (receiving end), out (empty legs), GND
Note: TRIP pin is internally pulled 10K resistor, using SCM TRIP IO port pin is pulled low, and then give a more than 10us pulse signal.
OUT pin as an anti-theft module, this module switch output pin, ranging module without this pin!
Note: The module should be re-energized circuit board inserted Fortunately, avoid high malfunction, if they have a re-energized before resolved.
This module provides ranging procedure: C51, PIC18F877, Yoshitatsu microcontroller, three kinds of MCU Test Reference.
3, URF04 module works:
(1) The IO trigger distance, high-level signal to at least 10us;
(2) the module automatically sends eight 40khz square wave, automatically detects whether a signal return;
(3) a signal back, through the IO outputs a high level, high duration is Ultrasonic time from launch to return.
Test distance = (time * High speed of sound (340M / S)) / 2;
The product is simple to use, a control port made a high of more than 10US, you can wait to receive high output port. A timer can be opened with the output timing, when this port goes low when you can read timer value, this time on the time for this distance, only calculate the distance. This constant cycle of measurement, you can reach the value of the mobile measurement ~ ~
Module works:
(1) The IO trigger distance, high-level signal to at least 10us;
(2) the module automatically sends eight 40khz square wave, automatically detects whether a signal return;
(3) a signal back, through the IO outputs a high level, the duration of high level is
Ultrasonic time from launch to return. Test distance = (time * High speed of sound (340M / S)) / 2;
This module provides a full set of ranging process: C51, PIC18F877, ultrasonic LCD1602 display, ultrasonic LCD12864 display, digital display, serial display, ranging reference program.
