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Merge pull request #104 from blddk/experimental

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Cooling fan control for a stepper driver fan - enable fan when stepper drivers are active
This commit is contained in:
kliment 2011-10-16 07:10:41 -07:00
commit b784326f14
2 changed files with 40 additions and 0 deletions
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6
Sprinter/Configuration.h
View file

@ -179,6 +179,12 @@ char uuid[] = "00000000-0000-0000-0000-000000000000";
#define BED_USES_THERMISTOR
//#define BED_USES_AD595
//This is for controlling a fan to cool down the stepper drivers
//it will turn on when any driver is enabled
//and turn off after the set amount of seconds from last driver being disabled again
//#define CONTROLLERFAN_PIN 23 //Pin used for the fan to cool controller, comment out to disable this function
#define CONTROLLERFAN_SEC 60 //How many seconds, after all motors were disabled, the fan should run
// Uncomment the following line to enable debugging. You can better control debugging below the following line
//#define DEBUG
#ifdef DEBUG

34
Sprinter/Sprinter.pde
View file

@ -245,6 +245,10 @@ void setup()
if(!E_ENABLE_ON) WRITE(E_ENABLE_PIN,HIGH);
#endif
#ifdef CONTROLLERFAN_PIN
SET_OUTPUT(CONTROLLERFAN_PIN); //Set pin used for driver cooling fan
#endif
//endstops and pullups
#ifdef ENDSTOPPULLUPS
#if X_MIN_PIN > -1
@ -1441,6 +1445,32 @@ int read_max6675()
}
#endif
#ifdef CONTROLLERFAN_PIN
unsigned long lastMotor = 0; //Save the time for when a motor was turned on last
unsigned long lastMotorCheck = 0;
void controllerFan()
{
if ((millis() - lastMotorCheck) >= 2500) //Not a time critical function, so we only check every 2500ms
{
lastMotorCheck = millis();
if(!READ(X_ENABLE_PIN) || !READ(Y_ENABLE_PIN) || !READ(Z_ENABLE_PIN) || !READ(E_ENABLE_PIN)) //If any of the drivers are enabled...
{
lastMotor = millis(); //... set time to NOW so the fan will turn on
}
if ((millis() - lastMotor) >= (CONTROLLERFAN_SEC*1000UL) || lastMotor == 0) //If the last time any driver was enabled, is longer since than CONTROLLERSEC...
{
WRITE(CONTROLLERFAN_PIN, LOW); //... turn the fan off
}
else
{
WRITE(CONTROLLERFAN_PIN, HIGH); //... turn the fan on
}
}
}
#endif
void manage_heater()
{
@ -1579,6 +1609,10 @@ void manage_heater()
WRITE(HEATER_1_PIN,HIGH);
}
#endif
#ifdef CONTROLLERFAN_PIN
controllerFan(); //Check if fan should be turned on to cool stepper drivers down
#endif
}
#if defined (HEATER_USES_THERMISTOR) || defined (BED_USES_THERMISTOR)