hai kak. Mohon maaf untuk minimal order 20 ribu ya kak baru bisa kita proses, diluar ongkirstock per 28 agustus = 10 pcs
Module data download address:
Http://pan•baidu•com/s/1qZhU3 [ the module performance and stability, measure the distance accurately. Can and foreign SRF05, SRF02 and other ultrasonic ranging module comparable. Module high-precision, blind (2cm) ultra-close, stable range is the success of this product to the market a strong basis!
2 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 : Induction Angle: not more than 15 degrees 6 : detection range: 2 cm & lt -45 0cm
This product uses the method: a control port send a 10US more than the high, you can wait for the high output at the receiving port has an output on a timer can start counting, when this port goes low can read timing. The value of this time for the range of time, can be calculated from the distance. Such a continuous cycle of measurement, you can move the value of the measurement ~ ~
Module works: (1) using IO trigger ranging, to at least 10us of high-level signal;
(2) the module automatically sends eight 40khz square wave, automatic detection of whether there is signal return;
(3) there is a signal return, through the IO output a high level, high duration is
The time from launch to return. Test distance = (high time * sound speed (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 .