Hello.
I wanted to put together a project for a stepper motor and a project for a sequence of leds in a single board.
#include <AccelStepper.h> // Load the AccelStepper library
#define motorPin1 5 // IN1 pin on the ULN2003A driver
#define motorPin2 4 // IN2 pin on the ULN2003A driver
#define motorPin3 0 // IN3 pin on the ULN2003A driver
#define motorPin4 2 // IN4 pin on the ULN2003A driver
int stepsPerRevolution = 64; // steps per revolution
float degreePerRevolution = 5.625; // degree per revolution
AccelStepper stepper(AccelStepper::HALF4WIRE, motorPin1, motorPin3, motorPin2, motorPin4);
void setup() {
Serial.begin(9600); // initialise the serial monitor
stepper.setMaxSpeed(1000.0); // set the max motor speed
stepper.setAcceleration(100.0); // set the acceleration
stepper.setSpeed(200); // set the current speed
stepper.moveTo(degToSteps(360)); // order the motor to rotate 90 degrees forward
}
void loop() {
stepper.run(); // start moving the motor
}
/*
* Converts degrees to steps
*
* 28BYJ-48 motor has 5.625 degrees per step
* 360 degrees / 5.625 = 64 steps per revolution
*
* Example with degToSteps(45):
* (64 / 5.625) * 45 = 512 steps
*/
float degToSteps(float deg) {
return (stepsPerRevolution / degreePerRevolution) * deg;
}
#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h> // Required for 16 MHz Adafruit Trinket
#endif
// Which pin on the Arduino is connected to the NeoPixels?
#define PIN 2 // On Trinket or Gemma, suggest changing this to 1
// How many NeoPixels are attached to the Arduino?
#define NUMPIXELS 33 // Popular NeoPixel ring size
// When setting up the NeoPixel library, we tell it how many pixels,
// and which pin to use to send signals. Note that for older NeoPixel
// strips you might need to change the third parameter -- see the
// strandtest example for more information on possible values.
Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
#define DELAYVAL 500 // Time (in milliseconds) to pause between pixels
void setup() {
// These lines are specifically to support the Adafruit Trinket 5V 16 MHz.
// Any other board, you can remove this part (but no harm leaving it):
#if defined(__AVR_ATtiny85__) && (F_CPU == 16000000)
clock_prescale_set(clock_div_1);
#endif
// END of Trinket-specific code.
pixels.begin(); // INITIALIZE NeoPixel strip object (REQUIRED)
}
void loop() {
// The first NeoPixel in a strand is #0, second is 1, all the way up
// to the count of pixels minus one.
for(int i=0; i<NUMPIXELS; i++) { // For each pixel...
// pixels.Color() takes RGB values, from 0,0,0 up to 255,255,255
// Here we're using a moderately bright green color:
pixels.setPixelColor(i, pixels.Color(255, 0, 0));
pixels.show(); // Send the updated pixel colors to the hardware.
delay(DELAYVAL); // Pause before next pass through loop
}
}