Accelstepper-28BYJ-48 PIR -sleep

[John]

Hello,
  I am making a sculpture in which the 28BYJ-48 stepper is triggered by a PIR.  The stepper will cycle CW, CCW, and CW, then stop until sensing motion again.  Unfortunately, the LEDs for pins 1 and 4 stay on when it stops.  I would like for them to go out until motion is again sensed. Ultimately I will tie this to two steppers.  Any help would be appreciated.

// accellsteppertest.ino
// Runs one stepper forwards and backwards, accelerating and decelerating
// at the limits. Derived from example code by Mike McCauley
// Set for 28BYJ-48 stepper
// Motion sensed from PIR triggers PIR pin 2 high and initiates stepper cycle
//Stops after one cycle of CW-CCW-CW
//sleep until next motion sensed

#include <AccelStepper.h>

#define FULLSTEP 4
#define HALFSTEP 8

//declare variables for the motor pins
int motorPin1 = 8;    // Blue   - 28BYJ48 pin 1
int motorPin2 = 9;    // Pink   - 28BYJ48 pin 2
int motorPin3 = 10;    // Yellow - 28BYJ48 pin 3
int motorPin4 = 11;    // Orange - 28BYJ48 pin 4
                        // Red    - 28BYJ48 pin 5 (VCC)
int ledpin = 13; // choose the pin for the LED
int pirpin = 2; // choose the input pin (for PIR sensor)
int pirstate = 0; // variable to store current pir state
int lastpirstate = 0; // variable to store last pir state
// The sequence 1-3-2-4 required for proper sequencing of 28BYJ48
AccelStepper stepper(HALFSTEP, motorPin1, motorPin3, motorPin2, motorPin4);

void setup()
{
stepper.setMaxSpeed(1000);
stepper.setAcceleration(100);
stepper.setSpeed(200);
pinMode(ledpin, OUTPUT); // declare LED as output
pinMode(pirpin, INPUT); // declare sensor as input

}
void loop(){
pirstate = digitalRead(pirpin);
 if(pirstate != lastpirstate) {
    if(pirstate == HIGH)
    digitalWrite(ledpin, HIGH);
 
stepper.moveTo(4500);
while (stepper.currentPosition() != 4000) // Full speed up to 4000
stepper.run();
stepper.stop(); // Stop as fast as possible: sets new target
stepper.runToPosition();
// Now stopped after quickstop
// Now go backwards
stepper.moveTo(-4500);
while (stepper.currentPosition() != 0) // Full speed basck to 0
stepper.run();
stepper.stop(); // Stop as fast as possible: sets new target
stepper.runToPosition();
// Now stopped after quickstop
digitalWrite(ledpin, LOW); //turns off LED

}}

[Mike McCauley]

Hello,

See disableOutputs() in the documentation.

--
Mike McCauley mi...@open.com.au
Open System Consultants Pty. Ltd
9 Bulbul Place Currumbin Waters QLD 4223 Australia http://www.open.com.au
Phone +61 7 5598-7474 Fax +61 7 5598-7070

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[John]

Thanks Mike, I figured it out:

stepper.runToPosition();
// Now stopped after quickstop
// Now go backwards
stepper.moveTo(-4500);
while (stepper.currentPosition() != 0) // Full speed basck to 0
stepper.run();

stepper.runToNewPosition(500);
stepper.runToNewPosition(0);

// Now stopped after quickstop
digitalWrite(ledpin, LOW); //turns off LED

stepper.disableOutputs( ); // disables power to motor pins