Free "COVID" Touch

Touchless dealing with daily trolley cars to avoid the spread of viruses and germs through surfaces..

Jul 14, 2020

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cars

monitoring

robots

Components and supplies

Geared DC Motor, 12 V

Ultrasonic Sensor - HC-SR04 (Generic)

Arduino UNO

Motor Driver/Controller, H-Bridge

Apps and platforms

Arduino IDE

Project description

Code

Project's code

arduino

1#define r1 2
2#define r2 3
3#define r3 4
4#define r4 5
5#define   ea 6 
6#define eb 1
7#define trig1 7     
8#define echo1 8
9#define trig2   9
10#define echo2 10
11#define trig3 11
12#define echo3 12
13int x1;
14int   x2;
15int x3;
16int u1;
17int u2;
18int u3;
19void setup() 
20{
21 pinMode   (trig1 , OUTPUT);
22 pinMode (echo1 , INPUT);
23 pinMode (trig2 , OUTPUT);
24   pinMode (echo2 , INPUT);
25 pinMode (trig3 , OUTPUT);
26 pinMode (echo3 , INPUT);
27   pinMode (r1 , OUTPUT);
28 pinMode (r2 , OUTPUT);
29 pinMode (r3 , OUTPUT);
30   pinMode (r4 , OUTPUT);
31 pinMode (ea , OUTPUT);
32 pinMode (eb , OUTPUT);
33   Serial. begin (9600);
34}
35
36void loop() 
37{
38
39digitalWrite ( trig1   , LOW);
40delayMicroseconds (5);
41digitalWrite ( trig1 , HIGH);
42delayMicroseconds   (10);
43digitalWrite ( trig1 , LOW);
44x1=pulseIn (echo1 , HIGH);
45u1 = x1/57;
46Serial.println   (u1);
47digitalWrite ( trig2 , LOW);
48delayMicroseconds (5);
49digitalWrite   ( trig2 , HIGH);
50delayMicroseconds (10);
51digitalWrite ( trig2 , LOW);
52x2=pulseIn   (echo2 , HIGH);
53u2 = x2/57;
54Serial.println (u2);
55digitalWrite ( trig3 ,   LOW);
56delayMicroseconds (5);
57digitalWrite ( trig3 , HIGH);
58delayMicroseconds   (10);
59digitalWrite ( trig3 , LOW);
60x3=pulseIn (echo3 , HIGH);
61u3 = x3/57;
62Serial.println   (u3);
63analogWrite (eb,155);
64analogWrite (ea,155);  
65if (u1 < 10 )
66{
67   digitalWrite(r1,HIGH);     
68digitalWrite(r2,LOW);
69digitalWrite(r3,HIGH);   
70digitalWrite(r4,LOW);
71delay (1000);
72}
73if (u2 < 10)
74{
75    digitalWrite(r1,LOW);      
76digitalWrite(r2,HIGH);
77digitalWrite(r3,HIGH);  
78digitalWrite(r4,LOW);
79delay   (1000);
80}
81if (u3 < 10)
82{
83  digitalWrite(r1,HIGH);     
84digitalWrite(r2,LOW);
85digitalWrite(r3,LOW);   
86digitalWrite(r4,HIGH);
87delay (1000);
88} else 
89{
90  digitalWrite(r1,LOW);      
91digitalWrite(r2,LOW);
92digitalWrite(r3,LOW);  
93digitalWrite(r4,LOW);
94}
95Serial   . println ( u1);
96Serial . println ( u2);
97Serial . println ( u3);
98}
99

#define r1 2
#define r2 3
#define r3 4
#define r4 5
#define   ea 6 
#define eb 1
#define trig1 7     
#define echo1 8
#define trig2   9
#define echo2 10
#define trig3 11
#define echo3 12
int x1;
int   x2;
int x3;
int u1;
int u2;
int u3;
void setup() 
{
 pinMode   (trig1 , OUTPUT);
 pinMode (echo1 , INPUT);
 pinMode (trig2 , OUTPUT);
   pinMode (echo2 , INPUT);
 pinMode (trig3 , OUTPUT);
 pinMode (echo3 , INPUT);
   pinMode (r1 , OUTPUT);
 pinMode (r2 , OUTPUT);
 pinMode (r3 , OUTPUT);
   pinMode (r4 , OUTPUT);
 pinMode (ea , OUTPUT);
 pinMode (eb , OUTPUT);
   Serial. begin (9600);
}

void loop() 
{

digitalWrite ( trig1   , LOW);
delayMicroseconds (5);
digitalWrite ( trig1 , HIGH);
delayMicroseconds   (10);
digitalWrite ( trig1 , LOW);
x1=pulseIn (echo1 , HIGH);
u1 = x1/57;
Serial.println   (u1);
digitalWrite ( trig2 , LOW);
delayMicroseconds (5);
digitalWrite   ( trig2 , HIGH);
delayMicroseconds (10);
digitalWrite ( trig2 , LOW);
x2=pulseIn   (echo2 , HIGH);
u2 = x2/57;
Serial.println (u2);
digitalWrite ( trig3 ,   LOW);
delayMicroseconds (5);
digitalWrite ( trig3 , HIGH);
delayMicroseconds   (10);
digitalWrite ( trig3 , LOW);
x3=pulseIn (echo3 , HIGH);
u3 = x3/57;
Serial.println   (u3);
analogWrite (eb,155);
analogWrite (ea,155);  
if (u1 < 10 )
{
   digitalWrite(r1,HIGH);     
digitalWrite(r2,LOW);
digitalWrite(r3,HIGH);   
digitalWrite(r4,LOW);
delay (1000);
}
if (u2 < 10)
{
    digitalWrite(r1,LOW);      
digitalWrite(r2,HIGH);
digitalWrite(r3,HIGH);  
digitalWrite(r4,LOW);
delay   (1000);
}
if (u3 < 10)
{
  digitalWrite(r1,HIGH);     
digitalWrite(r2,LOW);
digitalWrite(r3,LOW);   
digitalWrite(r4,HIGH);
delay (1000);
} else 
{
  digitalWrite(r1,LOW);      
digitalWrite(r2,LOW);
digitalWrite(r3,LOW);  
digitalWrite(r4,LOW);
}
Serial   . println ( u1);
Serial . println ( u2);
Serial . println ( u3);
}

Project's code

arduino

1#define r1 2
2#define r2 3
3#define r3 4
4#define r4 5
5#define  ea 6 
6#define eb 1
7#define trig1 7     
8#define echo1 8
9#define trig2  9
10#define echo2 10
11#define trig3 11
12#define echo3 12
13int x1;
14int  x2;
15int x3;
16int u1;
17int u2;
18int u3;
19void setup() 
20{
21 pinMode  (trig1 , OUTPUT);
22 pinMode (echo1 , INPUT);
23 pinMode (trig2 , OUTPUT);
24  pinMode (echo2 , INPUT);
25 pinMode (trig3 , OUTPUT);
26 pinMode (echo3 , INPUT);
27  pinMode (r1 , OUTPUT);
28 pinMode (r2 , OUTPUT);
29 pinMode (r3 , OUTPUT);
30  pinMode (r4 , OUTPUT);
31 pinMode (ea , OUTPUT);
32 pinMode (eb , OUTPUT);
33  Serial. begin (9600);
34}
35
36void loop() 
37{
38
39digitalWrite ( trig1  , LOW);
40delayMicroseconds (5);
41digitalWrite ( trig1 , HIGH);
42delayMicroseconds  (10);
43digitalWrite ( trig1 , LOW);
44x1=pulseIn (echo1 , HIGH);
45u1 = x1/57;
46Serial.println  (u1);
47digitalWrite ( trig2 , LOW);
48delayMicroseconds (5);
49digitalWrite  ( trig2 , HIGH);
50delayMicroseconds (10);
51digitalWrite ( trig2 , LOW);
52x2=pulseIn  (echo2 , HIGH);
53u2 = x2/57;
54Serial.println (u2);
55digitalWrite ( trig3 ,  LOW);
56delayMicroseconds (5);
57digitalWrite ( trig3 , HIGH);
58delayMicroseconds  (10);
59digitalWrite ( trig3 , LOW);
60x3=pulseIn (echo3 , HIGH);
61u3 = x3/57;
62Serial.println  (u3);
63analogWrite (eb,155);
64analogWrite (ea,155);  
65if (u1 < 10 )
66{
67  digitalWrite(r1,HIGH);     
68digitalWrite(r2,LOW);
69digitalWrite(r3,HIGH);  
70digitalWrite(r4,LOW);
71delay (1000);
72}
73if (u2 < 10)
74{
75    digitalWrite(r1,LOW);     
76digitalWrite(r2,HIGH);
77digitalWrite(r3,HIGH);  
78digitalWrite(r4,LOW);
79delay  (1000);
80}
81if (u3 < 10)
82{
83  digitalWrite(r1,HIGH);     
84digitalWrite(r2,LOW);
85digitalWrite(r3,LOW);  
86digitalWrite(r4,HIGH);
87delay (1000);
88} else 
89{
90  digitalWrite(r1,LOW);     
91digitalWrite(r2,LOW);
92digitalWrite(r3,LOW);  
93digitalWrite(r4,LOW);
94}
95Serial  . println ( u1);
96Serial . println ( u2);
97Serial . println ( u3);
98}
99

#define r1 2
#define r2 3
#define r3 4
#define r4 5
#define  ea 6 
#define eb 1
#define trig1 7     
#define echo1 8
#define trig2  9
#define echo2 10
#define trig3 11
#define echo3 12
int x1;
int  x2;
int x3;
int u1;
int u2;
int u3;
void setup() 
{
 pinMode  (trig1 , OUTPUT);
 pinMode (echo1 , INPUT);
 pinMode (trig2 , OUTPUT);
  pinMode (echo2 , INPUT);
 pinMode (trig3 , OUTPUT);
 pinMode (echo3 , INPUT);
  pinMode (r1 , OUTPUT);
 pinMode (r2 , OUTPUT);
 pinMode (r3 , OUTPUT);
  pinMode (r4 , OUTPUT);
 pinMode (ea , OUTPUT);
 pinMode (eb , OUTPUT);
  Serial. begin (9600);
}

void loop() 
{

digitalWrite ( trig1  , LOW);
delayMicroseconds (5);
digitalWrite ( trig1 , HIGH);
delayMicroseconds  (10);
digitalWrite ( trig1 , LOW);
x1=pulseIn (echo1 , HIGH);
u1 = x1/57;
Serial.println  (u1);
digitalWrite ( trig2 , LOW);
delayMicroseconds (5);
digitalWrite  ( trig2 , HIGH);
delayMicroseconds (10);
digitalWrite ( trig2 , LOW);
x2=pulseIn  (echo2 , HIGH);
u2 = x2/57;
Serial.println (u2);
digitalWrite ( trig3 ,  LOW);
delayMicroseconds (5);
digitalWrite ( trig3 , HIGH);
delayMicroseconds  (10);
digitalWrite ( trig3 , LOW);
x3=pulseIn (echo3 , HIGH);
u3 = x3/57;
Serial.println  (u3);
analogWrite (eb,155);
analogWrite (ea,155);  
if (u1 < 10 )
{
  digitalWrite(r1,HIGH);     
digitalWrite(r2,LOW);
digitalWrite(r3,HIGH);  
digitalWrite(r4,LOW);
delay (1000);
}
if (u2 < 10)
{
    digitalWrite(r1,LOW);     
digitalWrite(r2,HIGH);
digitalWrite(r3,HIGH);  
digitalWrite(r4,LOW);
delay  (1000);
}
if (u3 < 10)
{
  digitalWrite(r1,HIGH);     
digitalWrite(r2,LOW);
digitalWrite(r3,LOW);  
digitalWrite(r4,HIGH);
delay (1000);
} else 
{
  digitalWrite(r1,LOW);     
digitalWrite(r2,LOW);
digitalWrite(r3,LOW);  
digitalWrite(r4,LOW);
}
Serial  . println ( u1);
Serial . println ( u2);
Serial . println ( u3);
}

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Circuit connections

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