Proximity sensor with ultrasound and servo control (Automatic Trash)

On facebook we posted a cool project:

https://www.facebook.com/AZDelivery.de/videos/421956858229574/

We will show you how you can recreate the electronics or sensor here.

What do we need:

Microcontroller, compatible with Arduino UNO R3
Ultrasonic Sensor HC-SR04

Plug-in bridges
Servo motor

 

Ultrasonic sensor at Arduino

Software for the Arduino

Long distance1 = 0;
Long distance2 = 0;
Long Time=0;
Int Number = 15;
Int Values[16];

Void Setup() {   #define Trigger 3                     Arduino Pin 3 to HC-SR04 Trig   #define Echo 2                        Arduino Pin 2 to HC-SR04 Echo   Serial.Begin(115200);                 Serial Baud rate   pinMode(LED_BUILTIN, Output);
}

Void Loop() {   for (Int Ⅰ=0; Ⅰ <= Number-1; Ⅰ++){     Time=0;     noInterrupts();                     Disabling Interrupts     digitalWrite(Trigger, Low);     delayMicroseconds(3);     digitalWrite(Trigger, High);        Trigger Pulse 10 us     delayMicroseconds(20);     digitalWrite(Trigger, Low);     Time = pulseIn(Echo, High);         Measure Echo Time     Interrupts();                       Activating Interrupts     Values[Ⅰ] = Time;     delay (1);   }   distance1 = 0;   for (Int Ⅰ=0; Ⅰ <= Number -1; Ⅰ++){     distance1 = distance1 + Values[Ⅰ];   }   distance2 = distance1 / Number;   Serial.println(distance2);   If (distance2 > 9550){     digitalWrite(LED_BUILTIN, High);     Serial.println("open");     Delay(3000);     digitalWrite(LED_BUILTIN, Low);     Delay(1000);   }
}

Now our Arduino with the ultrasonic sensor detects at least once as we approach and displays this with the built-in LED.

In the next step, we control a servo motor to open the trash.

Now we are extending our wiring with a servo motor.

and adjust the software:

#include <Servo.H>
Servo servo1;

Long distance1 = 0;
Long distance2 = 0;
Long Time=0;
Int Number = 15;
Int Values[16];
Int To = 5;
Int On = 95;

Void Setup() {   #define Trigger 3                     Arduino Pin 3 to HC-SR04 Trig   #define Echo 2                        Arduino Pin 2 to HC-SR04 Echo   Serial.Begin(115200);                 Serial Baud rate   pinMode(LED_BUILTIN, Output);   servo1.Attach(8);   servo1.Write(To);
}

Void Loop() {   for (Int Ⅰ=0; Ⅰ <= Number-1; Ⅰ++){     Time=0;     noInterrupts();                     Disabling Interrupts     digitalWrite(Trigger, Low);     delayMicroseconds(3);     digitalWrite(Trigger, High);        Trigger Pulse 10 us     delayMicroseconds(20);     digitalWrite(Trigger, Low);     Time = pulseIn(Echo, High);         Measure Echo Time     Interrupts();                       Activating Interrupts     Values[Ⅰ] = Time;     delay (1);   }   distance1 = 0;   for (Int Ⅰ=0; Ⅰ <= Number -1; Ⅰ++){     distance1 = distance1 + Values[Ⅰ];   }   distance2 = distance1 / Number;   Serial.println(distance2);   If (distance2 > 9550){     digitalWrite(LED_BUILTIN, High);     Serial.println("open");     servo1.Write(On);     Delay(3000);     digitalWrite(LED_BUILTIN, Low);     servo1.Write(To);     Delay(1000);   }
}


You can now use the sensor and servo motor for various controls.
As can be seen in the Facebook video, an iris could be opened.

We wish you a lot of fun with the proximity sensor and are looking forward to your purposes.