As we are living in a pandemic, developing products with a touchless function will undoubtedly assist to limit contact.

As we are living in a pandemic, developing products with a touchless function will undoubtedly assist to limit contact, as people are concerned about viruses and germs spreading through things we touch on a daily basis.

RTL8722DM/RTL8722DM_MINI

Ameba RTL8722DM is a low-power dual-band WLAN and Bluetooth Low Energy SoC by Realtek. The RTL8722DM also include memory for Wi-Fi protocol functions and application making it simple for anyone to develop various kind of IoT applications. At the same time it has a wide range of peripheral interfaces. With all these interfaces, it can connect to most of the electronics components like LEDs, temperature and humidity sensors, and so on.

More Resources:

If you need additional technical documents or the source code for this project. Please visit the official websites and join the Facebook group and forum.

Ameba Official Website: https://www.amebaiot.com/en/

Ameba Facebook Group: https://www.facebook.com/groups/amebaioten

Ameba Forum: https://forum.amebaiot.com/

Setup

Firstly connect up the Servo Motor, Ultrasonic sensor with the AmebaD board.

Source Code

        void loop() 
{
  float duration,distance;
  digitalWrite(trigger_pin,HIGH);
  delayMicroseconds(1000);
  digitalWrite(trigger_pin, LOW);
  duration = pulseIn(echo_pin,HIGH);
  distance = (duration/58);
  Serial.print(distance);
  Serial.println(" cm");
  time = time + inter_time;
  delay(inter_time);
  if(distance < 10)
  {
    for(int i = 1500; i>= 1100; i-=25)
    {
      myservo.writeMicroseconds(i);
      Serial.println("2");
      delay(1000);
    }
    delay(1000);
    for(int i=1100; i<=1500; i+=25)
    {
      myservo.writeMicroseconds(i);
      Serial.println("1");
      delay(1000);
    }
    }
  }
    

The source code could found in my github: https://github.com/daphwl/Touchless-Automatic-Mini-Dustbin

Final Result

When you place your hand near the ultrasonic sensor, the dustbin will open and when your hand is away from it, the dustbin would close.

Daphne .

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