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File: Bumperduino_pressure_sensor.jpg | 3x HC-SR04
 
File: ultrasonic.jpg | HC-SR04
 
File: ultrasonic.jpg | HC-SR04
 
 
File: Hc_sr04_schematics.png | HC-SR04 schematics
 
File: Hc_sr04_schematics.png | HC-SR04 schematics
 
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Version vom 31. Mai 2016, 12:38 Uhr

Ultrasonic Sensor

An ultrasonic sensor is an excellent way to detect obstacles.

Example: HC-SR04

Distance 2 to 450 cm

Current 15 mA

Wiring

Ultrasonic Module VCC (+5V)  — PCB VCC (+5V)
Ultrasonic Module GND        — PCB GND
Ultrasonic Module Trigger    — PCB Digital Pin
Ultrasonic Module Echo       — PCB Digital Pin


An internal schematics of the sensor can be found here.[1]