Specification:
Operating voltage: DC5V
Quiescent current: less than 2mA
Output level: high 5V
Output Level: Below 0V
Induction angle: no more than 15 degrees
Detection distance: 2cm-450cm
High precision: up to 0.3cm
Onboard Wiring: VCC, trig (control end) echo (receiver), out (null), GND
Note: The trip pin is the internal resistor pull up 10k. Pull down the trip pin with the IO port of the microcontroller, and then give a pulse signal of 10us or more.
The exit pin is the switch’s output pin when the unit is used as an anti-theft unit. The distance unit does not need this pin!
Note: The module must be connected to the electrical panel and then energized to avoid high level failure. If created, it can be resolved by reactivating.
Working principle:
(1) Use the IO range trigger to give a high-level signal of at least 10us;
(2) The module automatically sends eight 40khz square waves to automatically detect whether there is a signal return.
(3) There is a signal return, a high level is output through the IO, and the duration of the high level is the time from transmission to the ultrasonic wave return.
Test distance = (high time x speed of sound (340 meters/second) / 2.
This product is easy to use. The control port operates at a high level above 10US, and can wait for a high level output at the receiving port. When there is an exit, the timer can be turned on. When the port becomes low, the timer value can be read. At this time, the run time can be calculated. With this continuous cycle measurement, you can access the measurement value of your mobile phone.
Reviews
There are no reviews yet.