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Introduction:

In this blog, we make one Automatic Contactless Sanitizer Dispenser using some sensors and microcontrollers.

Requirements:

I) Arduino Nano & Cable         

II) 1-Channel Relay Module    

III) DC Water Pump                 

IV) Photoeletric Switch            

V) DC Female Socket                

VI) 12V 2Amp Adapter             

VII) Nozzle & Pipe       

VIII) Sanitizer Container        

IX) Sun Board                           

X) LED                                        

XI) Soldering Kit                       

Description:

Here we will make one machine that can sanitize your hand touchless and also contactless.

For the sanitization purpose, we have taken one 12v DC pump, nozzle, pipe, and to automate the sanitization we have taken one 2-Channel relay module and one Arduino nano. To detect the hand we have taken one photoelectric switch.                

When one person takes his/her hand near to the photoelectric switch, this switch will activate and sends the data to the microcontroller, then the microcontroller will activate the relay for sanitization.   

So let's start with the circuit diagram.

Circuit Diagram:

Code:

//////////////////////////////////////////define part
#define ir 8
#define relay 4
#define led 7
void setup() 
{
  ////////////////////////////////////////////declaration part
  pinMode(led,OUTPUT);
  pinMode(relay,OUTPUT);
  pinMode(ir,INPUT); 
}

void loop() 
{
  /////////////////////////////////////////////////condition
  if(digitalRead(ir) == LOW)
  {
    digitalWrite(relay,LOW);
    digitalWrite(led,HIGH);
  }
  else
  {
    digitalWrite(relay,HIGH);
    digitalWrite(led,LOW);
  }
}

For more details also watch the video.