Hard time trying to solve this, help please.Im posting my code with comments on my problems, which should make them easier to understand. Attached schematic of my setup.
/*
I need to control my motor soon PowerON it goes to Compressor Limit switch and stops
Stay here for a certain time, after which it moves to another switch and stops.
After another interval, the cycle repeats.
*/
int Motor = 0;
int CompressorHome = 1; // Compressor Contacts
int HeaterHome = 2;
int TimerSwitch = 3;
int TimerLED = 4;
int CompressorState;
int HeaterState;
void setup()
{
pinMode (0, OUTPUT);
pinMode (1, INPUT);
pinMode (2, INPUT);
pinMode (3, INPUT);
pinMode (4, OUTPUT);
}
void loop()
{
CompressorState = digitalRead ( CompressorHome );
if ( CompressorState == HIGH )
{
digitalWrite(Motor, HIGH); // go to CompressorHome and stop Motor
}
delay (10000); // so far, so good, motor starts, stops at CompressorHome
/* first try
if ( HeaterState = LOW )
{
digitalWrite(Motor, HIGH); // go to HeaterHome and stop Motor
}
delay (10000);
// motor stops at Compressor, doesnt restart
*/
/* next try
HeaterState = digitalRead ( HeaterHome );
if ( HeaterState = LOW )
{
digitalWrite(Motor, HIGH); // go to HeaterHome and stop Motor
}
delay (10000);
// motor doesnt restart, Im lost
*/
// now I tried with this, manually moved the shaft off home position
//reapplied power; 10s later LED coes ON, another 10s motor moves to home.
// LED remains ON, motor doesnt move.
digitalWrite ( TimerLED,HIGH);
delay (10000);
// LED goes ON, shouldnt motor start for 1s?
digitalWrite (Motor, HIGH);
delay (1000);
}
You initialize your variables to label pins, you should use them for pinMode so you don't confuse yourself when you change the wiring. So-
pinMode(Motor, OUTPUT);
You check HeaterState before it is ever given a value. In the beginning when you initialize
int HeaterState;
you can just start it off with LOW
int HeaterState = 0;
I should have said that code is for a tiny45. I know these are Rx and Tx ona 328.
Now that you point that out, question:
if I program a 328 using these pins as INPUTs or OUTPUTs, can I reprogram the chip?
You initialize your variables to label pins, you should use them for pinMode so you don't confuse yourself when you change the wiring. So-
pinMode(Motor, OUTPUT);
I usually do as you suggest
You check HeaterState before it is ever given a value. In the beginning when you initialize
int HeaterState;
you can just start it off with LOW
int HeaterState = 0;
Delta_G:
That HeaterState variable is global. So it's automatically initialized to 0 == LOW
Wont forget; now if the pin state changes, would the variable also? or do I have to with a statement?
THANKs to ALL; after tryinf a few changes I got it running though I have a few doubts. Im posting my new code with appropiate comments.
int Motor = 13;
int CompressorHome = 12; // Compressor Contacts
int HeaterHome = 11; // Heater Contacts
int TimerLED = 10; // indicates Timer code is running
int TimerSwitch = 9; // selects Timer code
void setup()
{
pinMode (Motor, OUTPUT);
pinMode (CompressorHome, INPUT);
pinMode (HeaterHome, INPUT);
pinMode (TimerSwitch, INPUT);
pinMode (TimerLED, INPUT);
}
void advance() // Motor spins too fast at 5vdc,
// so I use pulses, for better control
{
digitalWrite(13, HIGH);
delay(25);
digitalWrite(13, LOW);
delay(500);
}
void loop()
{
advance();
if (digitalRead (CompressorHome) == LOW)
{
digitalWrite (Motor, LOW); // stops at CompressorHome
delay (10000); // waits 20s
digitalWrite (Motor, HIGH); // heads for HeaterHome
delay (1000); // without this delay, motor starts but immediately goes OFF
// OK, motor starts, Arduino checks next if "loop?", HeaterHome is still HIGH
// shouldnt it loop and execute "advance();"?
}
