Arduino with Stepper and LiquidCrystal Issue

@voltage

Hmmm ... interesting, but annoying.

I'll keep looking at it too.

Madmisha,

  Ok, I will take your other code and set that back to what you said and give it a go first.

Switches on driver:ON OFF OFF OFF OFF ON ON ON

First 3 = 2.69A RMS

4th switch = Half Current

5-8 = 400 Microsteps

Weird. When I try to verify this code below now I get an error that "dirfor" was not declared in this scope.

Arduino: 1.8.15 (Windows 10), Board: "Arduino Uno"

Oh yeah, I fixed that before by changing the spelling to "dirFor".

Posted by: @voltage

4th switch = Half Current

That might have been your thump. The LCD took more than 0.4 seconds to update and it cut power. I do not really know much about this setting though.

Posted by: @voltage

5-8 = 400 Microsteps

I think that is 2 microsteps = 400 steps/rev, assuming I am looking at the right datasheet. You might want to up that a little. Isn't that the lowest setting?

Posted by: @voltage

Weird. When I try to verify this code below now I get an error that "dirfor" was not declared in this scope.

I just verified it on mine and had no problem. I just did a search and all say dirFor although it might have lost case in the debug. I also confirmed that I was on Uno. That is odd. I am running 1.8.13 though.

Posted by: @madmisha

Posted by: @voltage

4th switch = Half Current

That might have been your thump. The LCD took more than 0.4 seconds to update and it cut power. I do not really know much about this setting though.

 

Posted by: @voltage

5-8 = 400 Microsteps

I think that is 2 microsteps = 400 steps/rev, assuming I am looking at the right datasheet. You might want to up that a little. Isn't that the lowest setting?

I believe the half/full current mode is just to keep the stepper from getting too hot when it has power applied but is not running. That is the right datasheet. I had the thumping in all of the settings I tried but thought it would be less work to microstep less per step so I set it to 400 assuming that 200 = a full step and 400 would = 1/2 step and so on.

Posted by: @madmisha

Posted by: @voltage

Weird. When I try to verify this code below now I get an error that "dirfor" was not declared in this scope.

I just verified it on mine and had no problem. I just did a search and all say dirFor although it might have lost case in the debug. I also confirmed that I was on Uno. That is odd. I am running 1.8.13 though.

I am running 18.15 so maybe it was a bug. Still getting this error though.

Edit: Adding int before it corrected it. 🙂

@voltage

I set max speed to 1000 because that is what their example used, but:

Posted by: @madmisha

int sp_pot = map((analogRead(spd)),0,1023,2000,50);

Try changing the 2000 to 1000. It might be going over and stopping on an error.

@voltage

Has anybody noticed yet that you're setting the speed and telling the stepper to run but you've never given it a target position ?

It may be standing still, not out of truculence, but simply because it hasn't been told where to go 🙂

@will

Constant speed example didn't do that. You are pulsing for move and setting the direction. Between those 2 things, it should know where to go.

@voltage

I just noticed that you have the buttons connected to ground. The interrupts won't trigger. That is the problem. I was combining Bills sketch and that's where I went wrong. He has his connected with a resistor to 5V and no pin mode because the interrupt is doing that.

Posted by: @madmisha

@will

Constant speed example didn't do that. You are pulsing for move and setting the direction. Between those 2 things, it should know where to go.

◆ runSpeed()

Note: ... if a step is due ...

@voltage

Can you please give us an idea of what speed range (in RPM) you will require ?