Arduino & KL23H251

Hi Everyone,

This is my very first electronics project and so please bare with me on this na

Pardon me for a small typo:

Blue goes to OUTA2
Its not "Blue goes to INA2" as indicated above

hello,

without knowing exactly how you have the circuit setup, i cant tell you *exactly* what your problem is.

however, there is one thing that sticks out: in order to drive a stepper motor you need to send a specific sequence of step signals. for the most straightforward mode, 'full step' there is a 4-signal sequence that is repeated.

see this page for more info: [www.piclist.com]

good luck!

Thanks for the link. I guess I understand whats going on here. The program that I came up with does not following the sequence that you had mentioned. Let me try this today and see how things go...

basically your program was making the stepper go forward and backward one step over and over (and not moving).

let us know how it goes!

Yes, now I get the problem. Thanks so much for your time.

My program is wrong in the first place. Here's the updated Arduino program.

I used the following program to interface Arduino with NJM2670

int enablePin = 4; // select the input pin for the potentiometer
int intA1 = 3;
int intA2 = 4;
int enA = 5;
int intB1 = 6;
int intB2 = 7;
int enB = 8;
int delayTime=20;
int slow = 0;

void setup() {
pinMode(enA, OUTPUT); // declare the ledPin as an OUTPUT
pinMode(intA1, OUTPUT); // declare the ledPin as an OUTPUT
pinMode(intA2, OUTPUT); // declare the ledPin as an OUTPUT
pinMode(enB, OUTPUT); // declare the ledPin as an OUTPUT
pinMode(intB1, OUTPUT); // declare the ledPin as an OUTPUT
pinMode(intB2, OUTPUT); // declare the ledPin as an OUTPUT
shutdown();
}
void shutdown()
{
digitalWrite(intA1, LOW); // sets the LED off
digitalWrite(intA2, LOW); // sets the LED off
digitalWrite(intB1, LOW); // sets the LED off
digitalWrite(intB2, LOW); // sets the LED off
digitalWrite(enA, LOW); // sets the LED off
digitalWrite(enB, LOW); // sets the LED off

}

void loop() {
//Step 1 Coil A +
digitalWrite(intA1, LOW); // sets the LED off
digitalWrite(intA2, HIGH); // sets the LED off
digitalWrite(intB1, LOW); // sets the LED off
digitalWrite(intB2, LOW); // sets the LED off
digitalWrite(enA, HIGH); // sets the LED off
digitalWrite(enB, LOW); // sets the LED off
delay(delayTime);
shutdown();
delay(slow);

//Step 2 Coil B +
digitalWrite(intA1, LOW); // sets the LED off
digitalWrite(intA2, LOW); // sets the LED off
digitalWrite(intB1, LOW); // sets the LED off
digitalWrite(intB2, HIGH); // sets the LED off
digitalWrite(enA, LOW); // sets the LED off
digitalWrite(enB, HIGH); // sets the LED off
delay(delayTime);
shutdown();
delay(slow);
//Step 3 Coil A -
digitalWrite(intA1, HIGH); // sets the LED off
digitalWrite(intA2, LOW); // sets the LED off
digitalWrite(intB1, LOW); // sets the LED off
digitalWrite(intB2, LOW); // sets the LED off
digitalWrite(enA, HIGH); // sets the LED off
digitalWrite(enB, LOW); // sets the LED off
delay(delayTime);
shutdown();
delay(slow);

//Step 4 Coil B -
digitalWrite(intA1, LOW); // sets the LED off
digitalWrite(intA2, LOW); // sets the LED off
digitalWrite(intB1, HIGH); // sets the LED off
digitalWrite(intB2, LOW); // sets the LED off
digitalWrite(enA, LOW); // sets the LED off
digitalWrite(enB, HIGH); // sets the LED off
delay(delayTime);
shutdown();
delay(slow);
}

cool, good luck with your program!