Hi guys, I'm super new to arduino and but have had a lot of fun making a system to replace my old gate controller which died.
I've just put a magnetic compass sensor in my driveway to measure deflection in degrees caused by a large metal object (a car) so the gate automatically opens, has a delay, and then closes.
The unit is also operated with RF button thingos. Everything is working just fine and dandy, but I worry that if the compass shifts the gate will go into a constant open/close situation and possibly burn out the 240v motor.
What I would like to do is measure if it opens more then 5 times in 30 minutes via pin 6 (The mag sensor) that it writes in a section of code that stops it working.
if (digitalRead(6) == HIGH && digitalRead(gc) == HIGH && digitalRead(go) == LOW)
{ // OPEN WITH AUTO SHUT from mag sensor, SETS AUTO CLOSE HIGH TO AVOID BEING MIXED UP WITH GENERAL STOPPING
autoclose = HIGH;
Wire.beginTransmission(I2C_ADDR);
Wire.write(0x12);
Wire.write(1);
Wire.endTransmission();
delay(2000); // DELAY TO ENSURE GATE PASSES LIMITS, ALSO STOPS BOUNCE
}
is what I'm doing at the moment, it sets autoclose high so then my auto close code can deal with it differently then just when the buttons are pressed. I want to incorporate the same thing in the trigger code like
if (digitalRead(6) == HIGH && digitalRead(gc) == HIGH && digitalRead(go) == LOW) && Notfaulty == LOW)
I want to use a millis timer to set the NotFaulty variable to high if the gate opens 5 time in 30minutes, therefore stopping the loop which may destroy the motor.
Is anyone able to help me get my head around this? I really have no idea 
Sorry if that's long winded and ass about face. Full code below.
#include "Wire.h" // for I2C bus
#define I2C_ADDR 0x20
int button2 = 5; // Button 2 on controller
int button = 2; // Button 1 on controller
int gc = 3; // Gate closed
int go = 4; // Gate open
static int autoclose;
void setup()
{
autoclose = LOW;
Wire.begin(); // Wake up I2C bus
// Set I/O bank A to outputs
Wire.beginTransmission(I2C_ADDR);
Wire.write(0x00);
Wire.write(0x00);
Wire.endTransmission();
}
void loop() {
if (digitalRead(button2) == HIGH && digitalRead(gc) == HIGH && digitalRead(go) == LOW)
{ // OPEN WITH AUTO SHUT, SETS AUTOCLOSE HIGH TO AVOID BEING MIXED UP WITH GENERAL STOPPING
autoclose = HIGH;
Wire.beginTransmission(I2C_ADDR);
Wire.write(0x12);
Wire.write(1);
Wire.endTransmission();
delay(2000); // DELAY TO ENSURE GATE PASSES LIMITS, ALSO STOPS BOUNCE
}
if (digitalRead(button) == HIGH && digitalRead(gc) == HIGH && digitalRead(go) == LOW)
{ // OPEN CODE
Wire.beginTransmission(I2C_ADDR);
Wire.write(0x12);
Wire.write(1);
Wire.endTransmission();
delay(2000); // DELAY TO ENSURE GATE PASSES LIMITS, ALSO STOPS BOUNCE
}
if (digitalRead(button) == HIGH && digitalRead(gc) == LOW && digitalRead(go) == HIGH)
{ // CLOSE CODE
Wire.beginTransmission(I2C_ADDR);
Wire.write(0x12);
Wire.write(2);
Wire.endTransmission();
delay(2000); // DELAY TO ENSURE GATE PASSES LIMITS, ALSO STOPS BOUNCE
}
if (digitalRead(gc) == HIGH && autoclose == LOW) // STOP WHEN CLOSED LIMIT IS HIT
{ Wire.beginTransmission(I2C_ADDR);
Wire.write(0x12);
Wire.write(0);
Wire.endTransmission();
delay(2000);
}
if (digitalRead(go) == HIGH && autoclose == LOW) // STOP WHEN OPEN LIMIT IS HIT
{ Wire.beginTransmission(I2C_ADDR);
Wire.write(0x12);
Wire.write(0);
Wire.endTransmission();
delay(2000);
}
if (digitalRead(go) == HIGH && autoclose == HIGH) // STOP WHEN OPEN LIMIT IS HIT WITH DELAY
{ Wire.beginTransmission(I2C_ADDR);
Wire.write(0x12);
Wire.write(0);
Wire.endTransmission();
delay(300000); // DELAY FOR GATE TO STAY OPEN
autoclose = LOW;
Wire.beginTransmission(I2C_ADDR);
Wire.write(0x12);
Wire.write(2); // START CLOSING AFTER DELAY
Wire.endTransmission();
delay(2000);
}
// breakkkkkkkkkkkkkkkkkkkkklowkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk mag sensor trigger code below
if (digitalRead(6) == HIGH && digitalRead(gc) == HIGH && digitalRead(go) == LOW)
{ // OPEN WITH AUTO SHUT from mag sensor, SETS AUTO CLOSE HIGH TO AVOID BEING MIXED UP WITH GENERAL STOPPING
autoclose = HIGH;
Wire.beginTransmission(I2C_ADDR);
Wire.write(0x12);
Wire.write(1);
Wire.endTransmission();
delay(2000); // DELAY TO ENSURE GATE PASSES LIMITS, ALSO STOPS BOUNCE
}
}
and there's a seperate arduino on the mag controller running pin 13 high if the heading changes
/*
HMC5883L Triple Axis Digital Compass. Compass Example.
Read more: http://www.jarzebski.pl/arduino/czujniki-i-sensory/3-osiowy-magnetometr-hmc5883l.html
GIT: https://github.com/jarzebski/Arduino-HMC5883L
Web: http://www.jarzebski.pl
(c) 2014 by Korneliusz Jarzebski
*/
#include <Wire.h>
#include <HMC5883L.h>
HMC5883L compass;
void setup()
{
Serial.begin(9600);
pinMode(13, OUTPUT);
// Initialize Initialize HMC5883L
Serial.println("Initialize HMC5883L");
while (!compass.begin())
{
Serial.println("Could not find a valid HMC5883L sensor, check wiring!");
delay(500);
}
// Set measurement range
compass.setRange(HMC5883L_RANGE_1_3GA);
// Set measurement mode
compass.setMeasurementMode(HMC5883L_CONTINOUS);
// Set data rate
compass.setDataRate(HMC5883L_DATARATE_30HZ);
// Set number of samples averaged
compass.setSamples(HMC5883L_SAMPLES_8);
// Set calibration offset. See HMC5883L_calibration.ino
compass.setOffset(0, 0);
}
void loop()
{
Vector norm = compass.readNormalize();
// Calculate heading
float heading = atan2(norm.YAxis, norm.XAxis);
// Set declination angle on your location and fix heading
// You can find your declination on: http://magnetic-declination.com/
// (+) Positive or (-) for negative
// For Bytom / Poland declination angle is 4'26E (positive)
// Formula: (deg + (min / 60.0)) / (180 / M_PI);
float declinationAngle = (4.0 + (26.0 / 60.0)) / (180 / M_PI);
heading += declinationAngle;
// Correct for heading < 0deg and heading > 360deg
if (heading < 0)
{
heading += 2 * PI;
}
if (heading > 2 * PI)
{
heading -= 2 * PI;
}
// Convert to degrees
float headingDegrees = heading * 180/M_PI;
// Output
Serial.print(" Heading = ");
Serial.print(heading);
Serial.print(" Degress = ");
Serial.print(headingDegrees);
Serial.println();
delay(100);
digitalWrite(13, LOW);
if (headingDegrees < 10)
{ (digitalWrite(13, LOW));
}else
{
(digitalWrite(13, HIGH));
}
}