Get Stepper Motor Positions From SD Card

Step 1: What You Will Need

• Arduino UNO (Or any other Arduino)
• SD card module
• SD card to store a file
• Stepper motor 28byj-48 & stepper motor driver board
• Jumper wires
• Breadboard
• Visuino program: Download Visuino

Step 2: Brought by PCBWay

Thank you PCBWay for supporting this tutorial and helping users learn more about electronics.

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Step 3: The Circuit

Step 5: Start Visuino, and Select the Arduino UNO Board Type

The Visuino: https://www.visuino.eu also needs to be installed. Download Free version or register for a Free Trial.

Start Visuino as shown in the first picture Click on the “Tools” button on the Arduino component (Picture 1) in Visuino When the dialog appears, select “Arduino UNO” as shown on Picture 2

Step 6: In Visuino Add Components

• Add “Pulse Generator” component
• Add “Counter” component
• Add “Micro SD Card Module” component
• Add “Text Multi Source” component
• Add “Replace Text” component
• Add “Text To Integer” component
• Add “Integer Multi Source” component
• Add “Contains Text” component
• Add “Up/Down Counter” component
• Add “4 Wire Stepper Motor” component
• Add “Compare Integer Value” component
• Add “Unsigned To Digital” component

Step 7: In Visuino Set Components

• Select “PulseGenerator1” and in the properties window set “Frequency” to 500
• If you want to set Stepper motor to run faster or slower then adjust the Frequency of the “PulseGenerator1“

• Double click on the “SDCard1” and in the “Elements” window drag “File” to the left side and in the properties window set “Path Name” to STEPPER.TXT
• Select “Elements” and click on the 3 dots button and in the new “Elements” window:
• Drag “Read Seek” to the left side and in the properties window select “Position” and click on the pin icon and select “Cardinal SinkPin“
• Drag “Read Text Line” to the left
• Close both “Elements” windows

• Select “ReplaceText1” and in the properties window set “From Value” to –
• Select “ContainsText1” and in the properties window set “Text” to –
• Select “UpDownCounter1” and in the properties window select “Initial Value” to and click on the pin icon and select “Integer SinkPin“
• Select “UpDownCounter1” and in the properties window set “Min” > “Roll Over” to False and “Min” > “Value” to 0
• Select “UnsignedToDigital1” and in the properties window set “Output pins” to 1
• Select “Stepper1” and in the properties select “Reversed” and click on the Pin Icon and select “Boolean SinkPin”

Step 8: In Visuino Connect Components

Step 9: Generate, Compile, and Upload the Arduino Code

In Visuino, at the bottom click on the “Build” Tab, make sure the correct port is selected, then click on the “Compile/Build and Upload” button.

Step 10: Play