1, the stability of the module performance, measure the distance accurately. Energy and foreign SRF05, SRF02 Ultrasonic ranging module and other comparable. Module precision, blind 2cm Super close, stable ranging success is to market this product in accordance with the strong!
2 main technical parameters:
1 : Voltage: DC5V2 : Static current: less than 2mA
3 : Level output: high 5V4 : Level output: bottom 0V
5 : Induction angle: not more than 15 degree 6 : Detection range: 2 cm -45 0cm
7: High precision: up to 0.3cm
Wiring, VCC, trig Control terminal , Echo Receiving end , GND
This product uses the method: a control port a 10US above High level, you can wait to receive high output port. There are output on a timer can start counting, when this port goes low timer value can be read, this time for this distance time before calculating the distance. this constant cycle of measurement, you can reach the value of the mobile measurement ~ ~
(1) The IO trigger ranging to at least 10us high signal; and
(2) module automatically sends eight 40khz square wave and automatically detect whether a signal return;
(3) the signal returned by a high IO output, high duration is
Ultrasonic time from launch to return. Test distance = (high level time * sound velocity (340M / S)) / 2;
This module provides a full set of ranging procedure: C51 , PIC18F877, ultrasonic LCD1602 display, ultrasonic LCD12864 display, digital display, serial display, ranging reference program .
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