UltraSonic Arduino Video instructions How To – Parking your car with an Arduino




How To – Parking your car with an Arduino

Code:

// Back up Helper, by Kevin Darrah v4
#include <SoftwareSerial.h>// to read the data fron the range finder on any digital pin
SoftwareSerial sonar(5, 6); // RX, TX   //we're only using the RX pin (5), so who cares about the TX pin
int huns, tens, ones, distance, returnbyte, sonar_data, i; //blah blah variables
//************CHANGED FROM VIDEO************
unsigned long time_start;//changed to unsigned long (allows to count up to 32bits-1 positive)
void wake_up(){}//  This routine does nothing but is needed by the interrupt to wake the arduino up
void setup(){ //set up stuff
Serial.begin(9600);// for debugging and viewing distances
pinMode(2, INPUT);//interrupt pin off of CDS
// Common Anode RGB LED so writing LOW turns it ON
pinMode(3, OUTPUT);//GREEN
pinMode(4, OUTPUT);//RED
pinMode(6, OUTPUT);//BLUE
digitalWrite(3, HIGH);//off
digitalWrite(4, HIGH);//off
digitalWrite(6, HIGH);//off
pinMode(7, OUTPUT);//Sonar Activate, goes to power pin of range finder
digitalWrite(7, HIGH);//turn on range finder
sonar.begin(9600);//start listening to range finder
}//setup
void go_to_sleep(){// put the arduino to sleep when called
digitalWrite(7, LOW);//turn off range finder
sonar.end();// IMPORTANT!  you have to stop the software serial function before sleep, or it won't sleep!
// attach the interrupt on INT0 or digital pin 2, call wake_up, and do it when the pin falls from 5V to 0V
attachInterrupt(0, wake_up, FALLING);
SMCR = B00000101;//Sleep mode control register, Power Down mode and Enable Sleep
__asm__  __volatile__("sleep");// In line assembler to execute the sleep function
//once digital pin 2 Falls, from seeing light, the program will resume here after waking up
SMCR = B00000100;// turn off bit 0 to disable the ability to sleep
detachInterrupt(0);//turn off the interrupt, so the program doesn't go crazy when awake
delay(1000);// let everybody get up and running for a sec
digitalWrite(7, HIGH);//turn on the range finder
delay(1000);//let it wake up for a sec, it goes through some self calibration stuff before its ready
sonar.begin(9600);//start listing to the range finder
for(i=0; i<10; i++){//flash the Blue LED letting us know everybody is ready to go
digitalWrite(6, LOW);
delay(50);
digitalWrite(6, HIGH);
delay(50);
}
//time stamp the free running timer, so we know how long we are awake for, and go back to sleep after a certain time
time_start= millis();
}//sleep over

For more detail visit: UltraSonic Arduino  Video instructions How To – Parking your car with an Arduino




This Post / Project can also be found using search terms:

  • arduino car ultrasonic 2 wheels source code
  • how to build sonic sonar parallax ping schematic pinout
Clip to Evernote

Leave a Comment

(Spamcheck Enabled)

Read previous post:
Hack Your Hasbro R2D2 With an IOIO Microcontroller
Hack Your Hasbro R2D2 With an IOIO Microcontroller

My wife bought me a Hasbro Interactive R2D2 Astromech Droid for my birthday a few years ago after I said...

Close
Scroll to top