Hi guys. I need your help with something. I’m a complete Newbie so please bear with me!
This is the scenario:
Amongst other non related hardware I have an 8ch relay module that I’ll be connecting to my Mega2560
To this is will connect 4 water pumps.
WP1
WP2
WP3
WP4
I want to run them in the following combinations, but it must select the flowDirection randomly and run it for 20mins
WP1 & WP4 = (flowDirection 1)
WP2 & WP3 = (flowDirection 2)
WP1 & WP2 = (flowDirection 3)
WP3 & WP4 = (flowDirection 4)
WP1 & WP3 = (flowDirection 5)
WP1 & WP3 = (flowDirection 6)
WP2 & WP4 = (flowDirection 7)
Then all the pumps must be off for 2 mins for the water settle/rest.
This will not be the only function I need the mega2560 to do so I don’t want the code to stop for 20mins every time this function starts!
Is this possible.
This is the code that I’ll also be running to run 4 channels LED that uses PWM for dimming.
// include the libraries:
#include <LiquidCrystal.h>
#include <Wire.h>
#include <Button.h>
#include <EEPROM.h>
#include <EEPROMVar.h>
/**** Define Variables & Constants ****/
/**************************************/
// set the RTC's I2C address
#define DS1307_I2C_ADDRESS 0x68
// create the LCD
LiquidCrystal lcd(8, 7, 5, 4, 16, 2);
// set up backlight
int bkl = 6; // backlight pin
byte bklIdle = 10; // PWM value for backlight at idle
byte bklOn = 70; // PWM value for backlight when on
int bklDelay = 10000; // ms for the backlight to idle before turning off
unsigned long bklTime = 0; // counter since backlight turned on
// create the menu counter
int menuCount = 1;
int menuSelect = 0;
//create manual override variables
boolean override = false;
byte overmenu = 0;
int overpercent = 0;
// create the buttons
Button menu = Button(12,PULLDOWN);
Button select = Button(13,PULLDOWN);
Button plus = Button(14,PULLDOWN);
Button minus = Button(15,PULLDOWN);
// LED variables. These control the behavior of lighting. Change these to customize behavoir
int minCounter = 0; // counter that resets at midnight.
int oldMinCounter = 0; // counter that resets at midnight.
int oneLed = 9; // pin for channel 1
int twoLed = 10; // pin for channel 2
int threeLed = 11; // pin for channel 3
int fourLed = 3; // pin for channel 4
int oneVal = 0; // current value for channel 1
int twoVal = 0; // current value for channel 2
int threeVal = 0; // current value for channel 3
int fourVal = 0; // current value for channel 4
// Variables making use of EEPROM memory:
EEPROMVar<int> oneStartMins = 750; // minute to start this channel.
EEPROMVar<int> onePhotoPeriod = 720; // photoperiod in minutes for this channel.
EEPROMVar<int> oneMax = 100; // max intensity for this channel, as a percentage
EEPROMVar<int> oneFadeDuration = 60; // duration of the fade on and off for sunrise and sunset for
// this channel.
EEPROMVar<int> twoStartMins = 810;
EEPROMVar<int> twoPhotoPeriod = 600;
EEPROMVar<int> twoMax = 100;
EEPROMVar<int> twoFadeDuration = 60;
EEPROMVar<int> threeStartMins = 810;
EEPROMVar<int> threePhotoPeriod = 600;
EEPROMVar<int> threeMax = 100;
EEPROMVar<int> threeFadeDuration = 60;
EEPROMVar<int> fourStartMins = 480;
EEPROMVar<int> fourPhotoPeriod = 510;
EEPROMVar<int> fourMax = 100;
EEPROMVar<int> fourFadeDuration = 60;
/*
int oneStartMins = 1380; // minute to start this channel.
int onePhotoPeriod = 120; // photoperiod in minutes for this channel.
int oneMax = 100; // max intensity for this channel, as a percentage
int oneFadeDuration = 60; // duration of the fade on and off for sunrise and sunset for
// this channel.
int twoStartMins = 800;
int twoPhotoPeriod = 60;
int twoMax = 100;
int twoFadeDuration = 15;
int threeStartMins = 800;
int threePhotoPeriod = 60;
int threeMax = 100;
int threeFadeDuration = 30;
int fourStartMins = 800;
int fourPhotoPeriod = 120;
int fourMax = 100;
int fourFadeDuration = 60;
*/
/****** RTC Functions ******/
/***************************/
// Convert decimal numbers to binary coded decimal
byte decToBcd(byte val)
{
return ( (val/10*16) + (val%10) );
}
// Convert binary coded decimal to decimal numbers
byte bcdToDec(byte val)
{
return ( (val/16*10) + (val%16) );
}
// Sets date and time, starts the clock
void setDate(byte second, // 0-59
byte minute, // 0-59
byte hour, // 1-23
byte dayOfWeek, // 1-7
byte dayOfMonth, // 1-31
byte month, // 1-12
byte year) // 0-99
{
Wire.beginTransmission(DS1307_I2C_ADDRESS);
Wire.send(0);
Wire.send(decToBcd(second));
Wire.send(decToBcd(minute));
Wire.send(decToBcd(hour));
Wire.send(decToBcd(dayOfWeek));
Wire.send(decToBcd(dayOfMonth));
Wire.send(decToBcd(month));
Wire.send(decToBcd(year));
Wire.endTransmission();
}
// Gets the date and time
void getDate(byte *second,
byte *minute,
byte *hour,
byte *dayOfWeek,
byte *dayOfMonth,
byte *month,
byte *year)
{
Wire.beginTransmission(DS1307_I2C_ADDRESS);
Wire.send(0);
Wire.endTransmission();
Wire.requestFrom(DS1307_I2C_ADDRESS, 7);
*second = bcdToDec(Wire.receive() & 0x7f);
*minute = bcdToDec(Wire.receive());
*hour = bcdToDec(Wire.receive() & 0x3f);
*dayOfWeek = bcdToDec(Wire.receive());
*dayOfMonth = bcdToDec(Wire.receive());
*month = bcdToDec(Wire.receive());
*year = bcdToDec(Wire.receive());
}
/****** LED Functions ******/
/***************************/
//function to set LED brightness according to time of day
//function has three equal phases - ramp up, hold, and ramp down
int setLed(int mins, // current time in minutes
int ledPin, // pin for this channel of LEDs
int start, // start time for this channel of LEDs
int period, // photoperiod for this channel of LEDs
int fade, // fade duration for this channel of LEDs
int ledMax // max value for this channel
) {
int val = 0;
//fade up
if (mins > start || mins <= start + fade) {
val = map(mins - start, 0, fade, 0, ledMax);
}
//fade down
if (mins > start + period - fade && mins <= start + period) {
val = map(mins - (start + period - fade), 0, fade, ledMax, 0);
}
//off or post-midnight run.
if (mins <= start || mins > start + period) {
if((start+period)%1440 < start && (start + period)%1440 > mins )
{
val=map((start+period-mins)%1440,0,fade,0,ledMax);
}
else
val = 0;
}
if (val > ledMax) {val = ledMax;}
if (val < 0) {val = 0; }
analogWrite(ledPin, map(val, 0, 100, 0, 255));
if(override){val=overpercent;}
return val;
}
/**** Display Functions ****/
/***************************/
// format a number of minutes into a readable time (24 hr format)
void printMins(int mins, //time in minutes to print
boolean ampm //print am/pm?
) {
int hr = (mins%1440)/60;
int mn = mins%60;
if(hr<10){
lcd.print(" ");
}
lcd.print(hr);
lcd.print(":");
if(mn<10){
lcd.print("0");
}
lcd.print(mn);
}
// format hours, mins, secs into a readable time (24 hr format)
void printHMS (byte hr,
byte mn,
byte sec //time to print
)
{
if(hr<10){
lcd.print(" ");
}
lcd.print(hr, DEC);
lcd.print(":");
if(mn<10){
lcd.print("0");
}
lcd.print(mn, DEC);
lcd.print(":");
if(sec<10){
lcd.print("0");
}
lcd.print(sec, DEC);
}
void ovrSetAll(int pct){
analogWrite(oneLed,map(pct,0,100,0,255));
analogWrite(twoLed,map(pct,0,100,0,255));
analogWrite(threeLed,map(pct,0,100,0,255));
analogWrite(fourLed,map(pct,0,100,0,255));
}
/**** Setup ****/
/***************/
void setup() {
Wire.begin();
pinMode(bkl, OUTPUT);
lcd.begin(16, 2);
digitalWrite(bkl, HIGH);
lcd.print("Typhon-Reef");
lcd.setCursor(0,1);
lcd.print("");
delay(5000);
lcd.clear();
analogWrite(bkl,bklIdle);
}
/***** Loop *****/
/****************/
void loop() {
byte second, minute, hour, dayOfWeek, dayOfMonth, month, year;
getDate(&second, &minute, &hour, &dayOfWeek, &dayOfMonth, &month, &year);
oldMinCounter = minCounter;
minCounter = hour * 60 + minute;
//check & set fade durations
if(oneFadeDuration > onePhotoPeriod/2 && onePhotoPeriod >0){oneFadeDuration = onePhotoPeriod/2;}
if(oneFadeDuration<1){oneFadeDuration=1;}
if(twoFadeDuration > twoPhotoPeriod/2 && twoPhotoPeriod >0){twoFadeDuration = twoPhotoPeriod/2;}
if(twoFadeDuration<1){twoFadeDuration=1;}
if(threeFadeDuration > threePhotoPeriod/2 && threePhotoPeriod >0){threeFadeDuration = threePhotoPeriod/2;}
if(threeFadeDuration<1){threeFadeDuration=1;}
if(fourFadeDuration > fourPhotoPeriod/2 && fourPhotoPeriod > 0){fourFadeDuration = fourPhotoPeriod/2;}
if(fourFadeDuration<1){fourFadeDuration=1;}
//check & set any time functions
//set outputs
if(!override){
oneVal = setLed(minCounter, oneLed, oneStartMins, onePhotoPeriod, oneFadeDuration, oneMax);
twoVal = setLed(minCounter, twoLed, twoStartMins, twoPhotoPeriod, twoFadeDuration, twoMax);
threeVal = setLed(minCounter, threeLed, threeStartMins, threePhotoPeriod, threeFadeDuration, threeMax);
fourVal = setLed(minCounter, fourLed, fourStartMins, fourPhotoPeriod, fourFadeDuration, fourMax);
}
else{
ovrSetAll(overpercent);
}