约翰尼5步进移动（循环）

Question

i'm relatively new in node.js resp. johnny-five. I'm trying to move a Stepper for (example) 5 times with 1000 Steps.

So:

   do 1000 Steps in cw ; 
   console.log('ready); 
   do 1000 steps;
   console.log('ready')
   ...

it would be nice to make this in a for loop . Example: for 5 times make 1000 steps. I try to do this with the following Code:

  for (var i = 0; i < 5; i++) {
    stepper.direction(1).step(1000, function() {
    console.log("Done stepping!");
    });
  }

The Output in my cmd is

Done stepping!
Done stepping!
Done stepping!
Done stepping!
Done stepping!

But the Motor moves only once. I don't really understand why!?

Hope someone can give a tip, Thanks!

Answer 1

Without wiring one up myself, I think that your problem is this: direction(1) . It seems like direction makes the motor point at a certain direction; thus your loop tells the motor to point at the same direction 5 times.

Try setting some different values inside stepper() , or replacing 1 with i in your loop:

for (var i = 0; i < 5; i++) {
   stepper.direction(i).step(1000, function() {
   console.log("Done stepping!");
   });
 }

If this doesn't help, does your stepper motor have an external power source? Can you provide a wiring diagram and the code for a simple test case?

Answer 2

I am just starting to get back into writing code. It's been 30 years so I am more than rusty.

Try removing 'var in your 'for' loop.

 for (i = 0; i < 5; i++) {
    stepper.direction(1).step(1000, function() {
    console.log("Done stepping!");
    });
  }

var I think would need to be defined earlier in the code.

If you found the reason why please post it so I can learn from it too. Thanks