hi guys i just finished my project i am new to programing so hope you like it
i have also the code :
#include <SoftwareSerial.h>
// TX_PIN is not used by the sensor, since that the it only transmits!
#define PING_RX_PIN 6
#define PING_TX_PIN 7
SoftwareSerial mySerial(PING_RX_PIN, PING_TX_PIN);
int counter=0;
int resetCounter=0;
int ledState=1;
int ledDirection=1;
boolean isSend=false;
unsigned long pulseDuration=1;
int RedLedpin=13;
int BlueLedpin=8;
long inches = 0, mili = 0;
byte mybuffer[4] = {0};
byte bitpos = 0;
void setup() {
// make led pin ready
pinMode(BlueLedpin, OUTPUT);
//make wake up pin ready
pinMode(RedLedpin, INPUT);
Serial.begin(9600);
mySerial.begin(9600);
}
void loop() {
bitpos = 0;
while (mySerial.available()) {
// the first byte is ALWAYS 0xFF and I'm not using the checksum (last byte)
// if your print the mySerial.read() data as HEX until it is not available, you will get several measures for the distance (FF-XX-XX-XX-FF-YY-YY-YY-FF-...). I think that is some kind of internal buffer, so I'm only considering the first 4 bytes in the sequence (which I hope that are the most recent! :D )
if (bitpos < 4) {
mybuffer[bitpos++] = mySerial.read();
} else break;
}
mySerial.flush(); // discard older values in the next read
mili = mybuffer[1]<<8 | mybuffer[2]; // 0x-- : 0xb3b2 : 0xb1b0 : 0x--
inches = 0.0393700787 * mili;
Serial.print("PING: ");
Serial.println(inches);
delay(25);
if (inches>55& isSend == false) {
analogWrite(BlueLedpin, 255);
} else if (isSend == false) {
if (ledDirection == 1) {
analogWrite(BlueLedpin, ledState);
if (ledState == 125) { ledDirection=-1; } else { ledState = ledState + 1; }
} else {
analogWrite(BlueLedpin, ledState);
if (ledState < 1) { ledDirection=1; } else { ledState = ledState - 1; }
}
} else {
analogWrite(RedLedpin, 255);
analogWrite(BlueLedpin, 0);
}
// if someone is in reach
if ( inches <55 && inches <=65
) counter = counter + 1;
analogWrite(RedLedpin, 200);
if (inches > 200) { resetCounter=0; }
if
(resetCounter = resetCounter +1);
if (resetCounter > 100)
counter=0;
resetCounter=0;
isSend=false;
analogWrite(RedLedpin, 200);
}
alarm
- Sensors / input devices: Ultrasonic Distance Sensor
This is a companion discussion topic for the original entry at https://community.robotshop.com/robots/show/ultrasonic-distance-sensor