HC-SR04 ultrasonic module can offer non-contact distance s.....
This is the simplest sensor you will find for obstacle and collision sensing. It is basically a swit.....
HC-SR04 Ultrasonic Module Compatible with ARDUINO, RASPBERRY PI, AVR, PIC, 8051, etc.
BASIC WORKING PRINCIPLE:
1. Using IO port TRIG trigger location, to the high level signal of.....
Voltage: DC 6-36V
Output current: 300mA