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Parking Sensor
Introducing
Parking Sensor
Great start for beginners in writing codes.
Every beginner learns to code parking sensors in the first steps. If you have a passion for code to parking sensor and you don't have much time to build a circuit for it, this product exactly for you.
Cırcuit diagram
We have designed this circuit for you could learn how to code.
Learn How to Code
//You can copy this area
#define trigpin 12 //We need trig and echo pin for use HC-SR04 Sensor.
#define echopin 11
#define clock 10 //Clock, latch and data pins are about 74HC595 shift register
#define latch 9 // We need to use this pins for our LED's
#define data 8 //More details at: https://www.arduino.cc/en/tutorial/ShiftOut
#define buzzer 5 //We are using 1 buzzer for voice to get feedback betwwen obstacles and us
static int range; //We need this variables for use our Ultrasonic Sensor
static int Time;
byte leds[]={0b10000000,
0b11000000,
0b11100000,
0b11110000,
0b11111000,
0b11111100,
0b11111110,
0b11111111,
0b00000000 };
//We need to assign our leds for how many from them will be working in the range for between obstacles and us
void setup()
{
pinMode(trigpin, OUTPUT); //This code is about what our pins are will be output or input
pinMode(echopin, INPUT);
pinMode(buzzer, OUTPUT);
pinMode(latch, OUTPUT);
pinMode(clock, OUTPUT);
pinMode(data, OUTPUT);
}
void loop()
{
digitalWrite(trigpin, HIGH); //This area about our sensor codes
delayMicroseconds(1000); //More details at https://howtomechatronics.com/tutorials/arduino/ultrasonic-sensor-hc-sr04/
digitalWrite(trigpin, LOW);
Time = pulseIn(echopin, HIGH);
range = (Time/2) / 29.1;
//After from here we are setting which leds and buzzer will be active at which range, you can change the ranges as you wish
if(range>=141){
digitalWrite(latch,LOW);
shiftOut(data,clock,MSBFIRST,leds[8]);
digitalWrite(latch,HIGH);
//We are setting our leds off at over 141cm range
}
if(range>=121&&range<=140){
digitalWrite(latch,LOW);
shiftOut(data,clock,MSBFIRST,leds[0]); //Which led scnerio will be work in this range
digitalWrite(latch,HIGH);
bzzr(1000); //our buzzer intensity in this range
}
if(range>=101&&range<=120){
digitalWrite(latch,LOW);
shiftOut(data,clock,MSBFIRST,leds[1]);
digitalWrite(latch,HIGH);
bzzr(700);
}
if(range>=81&&range<=100){
digitalWrite(latch,LOW);
shiftOut(data,clock,MSBFIRST,leds[2]);
digitalWrite(latch,HIGH);
bzzr(500);
}
if(range>=61&&range<=80){
digitalWrite(latch,LOW);
shiftOut(data,clock,MSBFIRST,leds[3]);
digitalWrite(latch,HIGH);
bzzr(300);
}
if(range>=41&&range<=60){
digitalWrite(latch,LOW);
shiftOut(data,clock,MSBFIRST,leds[4]);
digitalWrite(latch,HIGH);
bzzr(200);
}
if(range>=21&&range<=40){
digitalWrite(latch,LOW);
shiftOut(data,clock,MSBFIRST,leds[5]);
digitalWrite(latch,HIGH);
bzzr(100);
}
if(range>=11&&range<=20){
digitalWrite(latch,LOW);
shiftOut(data,clock,MSBFIRST,leds[6]);
digitalWrite(latch,HIGH);
bzzr(50);
}
if(range>=0&&range<=10){
digitalWrite(latch,LOW);
shiftOut(data,clock,MSBFIRST,leds[7]);
digitalWrite(latch,HIGH);
bzzr(1);
}
}
void bzzr(int speed){
digitalWrite(buzzer, LOW);
static unsigned long time=millis();
if(millis()-time >=speed){
time=millis();
digitalWrite(buzzer, HIGH);
}
} //This is buzzer function. You dont need to know this for use the parking sensor.
Best friend with HC-SR04 Sensor
HC-SR04 Ultrasonic sensor and Circle NOOB Series Parking Sensor is working together.
HC-SR04 is a distance sensor and it emits an ultrasound which travels through the air and if there is an object or obstacle on its path, it will bounce back to the module.
Circle Parking Sensor has 1 buzzer and 8 LED's.
LED's managed by 74hc595 shift register. With this register, we can use the leds with 3 pins.
Buzzer working with transistor. With transistor we are protecting Arduino pin to high current.
*To use this Parking Sensor you need HC-SR04 Ultrasonic Sensor
We are proud of people who use this parking sensor on thousands of projects around the world.
Dozens of kids learn to code with the circle noob series every day.
Thanks for supporting Circle.
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