4. Method of use:
A control mouth hair a 10 US above the high level, can wait for high level output receiver mouth. A has an output can open timer time, when the mouth into a low power can be read at ordinary times timer values, where you for the ranging time, can calculate the distance. This will continue the cycle, can reach you move measurement value ~ ~
5. Module working principle:
(1) the IO trigger ranging, to at least 10 us high level signal;
(2) module automatically send eight 40 KHZ of square wave, automatic testing if it has any signals return;
(3) a signal to return to, through the IO output top level, the duration of the high level is from the launch ultrasonic returned to time. Test distance = (high level time * sound velocity (340 M/S)) / 2;
US-100 ultrasonic ranging module can realize 2 cm ~ 4.5 m non-contact ranging function, with a 2.4 ~ 5.5 V of wide voltage input range, static power consumption less than 2 mA, bring their own temperature sensor calibration on the ranging results, and has GPIO, serial ports and so on many kinds of communication mode, inside take watchdog, stable and reliable.
The main technical parameters
Electrical parameters US-100Ultrasonic ranging module
Working voltage DC 2.4V~5.5V
Static current 2mA
Working temperature -20~+70degrees
Output way Level or UART (jumper cap choice)
Induction Angle Less than 15 degrees
Detection range 2cm-450cm
Detecting precision 0.3cm+1%
UART mode serial interface configuration 9600 baud rate, starting a one, and stop bits a, data bits, eight, and white parity checking, no flow control.