B4R Question Help me about use A4988 Stepper motor library

vali khandangoll · Apr 19, 2021

Hi all of you.
I want to use a a4988 stepper motor driver .
I using a dvd writer stepper motor.
I have a library that attached.
and I have written code below.

Sub Process_Globals
Public Serial1 As Serial
Public motorX As A4988
Public dir_pin As Pin
Public step_pin As Pin
Public enable_pin As Pin
Public ms1_pin As Pin
Public ms2_pin As Pin
Public ms3_pin As Pin
End Sub

Private Sub AppStart
Serial1.Initialize(115200)
Log("AppStart")
ms1_pin.Initialize(1,ms1_pin.MODE_OUTPUT)
ms2_pin.Initialize(2,ms2_pin.MODE_OUTPUT)
ms3_pin.Initialize(3,ms3_pin.MODE_OUTPUT)
step_pin.Initialize(5,step_pin.MODE_OUTPUT)
dir_pin.Initialize(6,dir_pin.MODE_OUTPUT)
enable_pin.Initialize(7,enable_pin.MODE_OUTPUT)

dir_pin.DigitalWrite(True)
step_pin.DigitalWrite(True)
enable_pin.DigitalWrite(True)

ms1_pin.DigitalWrite(True)
ms2_pin.DigitalWrite(True)
ms3_pin.DigitalWrite(True)
End Sub

I can not continue.

janderkan · Apr 19, 2021

I think that you should toggle the step_pin to move the motor.

B4X:

sub timStep_Tick
    step_pin.DigitalWrite(True)
    Delay(10)
    step_pin.DigitalWrite(False)
end sub

vali khandangoll · Apr 19, 2021

janderkan said:
I think that you should toggle the step_pin to move the motor.

B4X:

sub timStep_Tick step_pin.DigitalWrite(True) Delay(10) step_pin.DigitalWrite(False) end sub

thanks.
I defined timstep as timer and write your code.
but not worked.

A4988 library have 3 command.

steps(dir_pin,step_pin,enable_pin,ms1_pin,ms2_pin,ms3_pin)
and
begin(rpm,microSteps)
and
MicroSteps

I think we must use that.

vali khandangoll · Apr 19, 2021

what problem is in picture ?

janderkan · Apr 19, 2021

vali khandangoll said:
what problem is in picture ?

Where did you find the code ?

vali khandangoll · Apr 20, 2021

janderkan said:
Where did you find the code ?

I attached the A4988 library in above.
that is one of this library subs.

candide · Apr 20, 2021

in zip file you have only A4988.cpp and A4988.h : it is a library for arduino

=> if you want to use it with B4R, you need a wrapper on top of arduino library with rA4988.cpp and rA4988.h and at last rA4988.xml

this library is from: https://github.com/laurb9/StepperDriver

candide · Apr 24, 2021

this wrapper should help at A4988 management with B4R

it is wrapper for class A4988 and inherited class BasicStepperDriver.
parameters for "State" and for "Mode" are declared in B4R and can be managed by name.

Differences with arduino library:
- void setSpeedProfile1(ArrayInt* profile);
- ArrayInt* getSpeedProfile();
both are working with an ArrayInt 3 elements on B4R and with a struct 3 elements in arduino side. (conversion is done by wrapper)

with a few modifications, all examples in Arduino library can be adapted to B4R .
a B4R example is added in zip file

vali khandangoll · Apr 26, 2021

candide said:
this wrapper should help at A4988 management with B4R

it is wrapper for class A4988 and inherited class BasicStepperDriver.
parameters for "State" and for "Mode" are declared in B4R and can be managed by name.

Differences with arduino library:
- void setSpeedProfile1(ArrayInt* profile);
- ArrayInt* getSpeedProfile();
both are working with an ArrayInt 3 elements on B4R and with a struct 3 elements in arduino side. (conversion is done by wrapper)

with a few modifications, all examples in Arduino library can be adapted to B4R .
a B4R example is added in zip file

thanks again.
Solved

B4R Question Help me about use A4988 Stepper motor library

vali khandangoll

Active Member

Attachments

janderkan

Well-Known Member

vali khandangoll

Active Member

vali khandangoll

Active Member

Attachments

janderkan

Well-Known Member

vali khandangoll

Active Member

candide

Active Member

candide

Active Member

Attachments

vali khandangoll

Active Member

B4R Question Help me about use A4988 Stepper motor library

Active Member

Attachments

Well-Known Member

Active Member

Active Member

Attachments

Well-Known Member

Active Member

Active Member

Active Member

Attachments

Active Member

Privacy & Transparency

Privacy & Transparency