Garage Door Hack

Introducing Open-er-o-matic 3000. OOM3K. My finest project to date. I have my Arduino poking around with a PING))) sensor, a servo, some LEDs, and best of all…my garage door opener. End result: some Star Trek-ass shit.

Check this footage of the OOM3K in action. Here, I had it configured to open the door when the ultrasonic sensor echoes off of something within 8 cm…

After the bump, of course

Not only is this thing awesome, but you can get all sorts of clear looks at my trusty Ronco Showtime rotisserie oven. Yard bird is a big hit at the old Swanson place.

There is not much to this code…I built it on top of the LED binary project code. Prepare for a bitchin’ snippet.

//Open-er-o-matic 3000

// Joseph Swanson | 2011
// https://swantron.com

// Setup
// LEDs connected to pins 11, 2-5
// Ping))) sensor signal to pin 7
// Servo signal to pin 10
// Ping))) +, servo + to 5V
// Ground the shit out of everything

#include

Servo myservo;

int pos = 0;

// Pin assignment
const int ledPin1 = 11;
const int ledPin2 = 2;
const int ledPin3 = 3;
const int ledPin4 = 4;
const int ledPin5 = 5;
const int pingPin = 7;

// Create variables to store LED states
int ledState1 = LOW;
int ledState2 = LOW;
int ledState3 = LOW;
int ledState4 = LOW;
int ledState5 = LOW;

void setup() {

myservo.attach(10);

//Define pins 1-5 as output
pinMode(ledPin1, OUTPUT);
pinMode(ledPin2, OUTPUT);
pinMode(ledPin3, OUTPUT);
pinMode(ledPin4, OUTPUT);
pinMode(ledPin5, OUTPUT);
}
void loop()
{
// Reset LEDs levels to low to begin loop
ledState1 = LOW;
ledState2 = LOW;
ledState3 = LOW;
ledState4 = LOW;
ledState5 = LOW;
pos = 0;

// Set duration variable
long duration, inches, cm;

// Loop section for ping signal pin…start as output
pinMode(pingPin, OUTPUT);
digitalWrite(pingPin, LOW);
delayMicroseconds(2);
digitalWrite(pingPin, HIGH);
delayMicroseconds(5);
digitalWrite(pingPin, LOW);

// Listen with same pin
pinMode(pingPin, INPUT);
duration = pulseIn(pingPin, HIGH);

// Convert time to a distance
inches = microsecondsToInches(duration);
cm = microsecondsToCentimeters(duration);

// Configure this for LED sensitivity
delay(500);

// March through cm values…output LEDs an servo
if (cm < 80) { ledState1 = HIGH;} if (cm < 64) { ledState2 = HIGH;} if (cm < 48) { ledState3 = HIGH;} if (cm < 32) { ledState4 = HIGH;} if (cm < 16) { ledState5 = HIGH; } if (cm < 16) { pos =( pos + 14 ); } // fire all LED values...fire servo digitalWrite(ledPin1, ledState1); digitalWrite(ledPin2, ledState2); digitalWrite(ledPin3, ledState3); digitalWrite(ledPin4, ledState4); digitalWrite(ledPin5, ledState5); myservo.write(pos); delay(100); } long microsecondsToInches(long microseconds) { // 1130 feet per second...transofrm inches return microseconds / 74 / 2; } long microsecondsToCentimeters(long microseconds) { // 340 meters per second...transform cm return microseconds / 29 / 2; }

I hope you enjoyed this one. I had a fun time with this piece of crap. Plus, it has given me some ideas of how to extend this setup into something more refined. Spoiler: more awesome.