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-rw-r--r--Sprinter/Configuration.h6
-rw-r--r--Sprinter/Sprinter.pde34
2 files changed, 40 insertions, 0 deletions
diff --git a/Sprinter/Configuration.h b/Sprinter/Configuration.h
index 3f2dda2..a3a5d59 100644
--- a/Sprinter/Configuration.h
+++ b/Sprinter/Configuration.h
@@ -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
diff --git a/Sprinter/Sprinter.pde b/Sprinter/Sprinter.pde
index 52910ec..7a6bf5e 100644
--- a/Sprinter/Sprinter.pde
+++ b/Sprinter/Sprinter.pde
@@ -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)