... up to 0.3cm8: Panel wiring, VCC, trig 's (control side), the echo (receiving end), out (empty feet), GND9: ... internal pull-up 10K resistor, down TRIP microcontroller IO port pin, and then to a 10:us pulse signal ... )) / 2;This product is simple to use, and a Control Port high above a 10US, you can wait for the high ... can open the timer can be read when this port goes low timer value for the time ranging be ...