Arduino Pro Mini / 步进电机ULN2003驱动板 连接以及测试程序

连接如下：

ULN2003驱动板 Arduino Pro Mini IN1 --- 8 IN2 --- 9 IN3 --- 10 IN4 --- 11

5V+ --- VCC 5v- --- GND

以下程序测试通过 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ //参考http://www.4tronix.co.uk/arduino/Stepper-Motors.php //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 motorSpeed = 1200; //variable to set stepper speed int count = 0; // count of steps made int countsperrev = 512; // number of steps per full revolution int lookup[8] = {B01000, B01100, B00100, B00110, B00010, B00011, B00001, B01001};

////////////////////////////////////////////////////////////////////////////// void setup() { //declare the motor pins as outputs pinMode(motorPin1, OUTPUT); pinMode(motorPin2, OUTPUT); pinMode(motorPin3, OUTPUT); pinMode(motorPin4, OUTPUT); Serial.begin(9600); }

////////////////////////////////////////////////////////////////////////////// void loop(){ if(count < countsperrev ) clockwise(); else if (count == countsperrev * 2) count = 0; else anticlockwise(); count++; }

////////////////////////////////////////////////////////////////////////////// //set pins to ULN2003 high in sequence from 1 to 4 //delay "motorSpeed" between each pin setting (to determine speed) void anticlockwise() { for(int i = 0; i < 8; i++) { setOutput(i); delayMicroseconds(motorSpeed); } } void clockwise() { for(int i = 7; i >= 0; i--) { setOutput(i); delayMicroseconds(motorSpeed); } }

void setOutput(int out) { digitalWrite(motorPin1, bitRead(lookup[out], 0)); digitalWrite(motorPin2, bitRead(lookup[out], 1)); digitalWrite(motorPin3, bitRead(lookup[out], 2)); digitalWrite(motorPin4, bitRead(lookup[out], 3)); } ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝