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Hello,
I’m trying to get to work a stepper motor with a DRV8825 driver on a Raspberry Pi 3 A+ with Codesys 3.5 SP17. The used stepper motor is a JK20HS30-0604. I applied the following schematic:
I already adjust the voltage to about 0,25 V (Vref. = 1/2 I max.) with potentiometer on the DRV8825.
I want to achieve a simple example:
When I push a button I would like the motor accelerate for 3 seconds to a high speed, then maintain the speed for 2 seconds and then decelerate for 3 seconds until it completely stop.
I open the project named « StepperTestProject » available here: https://forge.codesys.com/drv/sm3raspistepper/home/Home/
In the « Visu_DRV8880 » there is so much FB so I don’t know which one I have to take also the range of the input parameters to set for my example. There is also a POU but I don’t understand what he do because is in ST and I only program in Ladder (LD) or SFC.
Who can help me and give me more details to have a functional stepper motor?
Many thanks in advance for your help.
Yann
Last edit: yann2021 2021-07-07
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not really, because your device expects to get puls/direction as I understand the schematic.
This approach from forge does generate the flow patterns for the amplifier.
So to have it easy just order this really cheap devices/amplifiers from the forge project.
That's what I want to suggest
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Hello,
I’m trying to get to work a stepper motor with a DRV8825 driver on a Raspberry Pi 3 A+ with Codesys 3.5 SP17. The used stepper motor is a JK20HS30-0604. I applied the following schematic:
I already adjust the voltage to about 0,25 V (Vref. = 1/2 I max.) with potentiometer on the DRV8825.
I want to achieve a simple example:
When I push a button I would like the motor accelerate for 3 seconds to a high speed, then maintain the speed for 2 seconds and then decelerate for 3 seconds until it completely stop.
I open the project named « StepperTestProject » available here:
https://forge.codesys.com/drv/sm3raspistepper/home/Home/
In the « Visu_DRV8880 » there is so much FB so I don’t know which one I have to take also the range of the input parameters to set for my example. There is also a POU but I don’t understand what he do because is in ST and I only program in Ladder (LD) or SFC.
Who can help me and give me more details to have a functional stepper motor?
Many thanks in advance for your help.
Yann
Last edit: yann2021 2021-07-07
Hello,
Really, no idea, nobody can help me...? 😢
not really, because your device expects to get puls/direction as I understand the schematic.
This approach from forge does generate the flow patterns for the amplifier.
So to have it easy just order this really cheap devices/amplifiers from the forge project.
That's what I want to suggest