Introduction: Stepper Motor Controlled Stepper Motor Without Microcontroller(V2)
In one of my previous Instructables, I showed you how to control a stepper motor using a stepper motor without a microcontroller. It was a quick and fun project but it came with two problems which will be getting solved in this Instructable. So, without further ado, let's get started!
Step 1: Watch the Video
Watch the video to know more about the project, know the problems being solved, and see it in action.
Step 2: Get the Required Stuff
For this project, you need to get:
- A stepper motor to be driven(Bipolar or unipolar)
- A stepper motor to use as a controller(Bipolar or unipolar. Here, unipolar is easier to wire up.)
- 2 LM258P op-amp chips.
- 4x 100k Ω resistors.
- 4x 4.7k Ω resistors.
- 4x 47k Ω resistors.
- 1x 1k Ω resistor(4 more if a bipolar stepper motor will be used as a controller.)
- An LED.
- Connecting wires.
- A PCB with dot-matrix(To build the circuit on)
Click on the pictures to know more.
Step 3: Build the Amplifier Circuit
Don't worry! It's not that complicated.
Step 4: Connect the Controller Stepper Motor to the Amplifier
If you are using a unipolar stepper motor, then you can connect the center tap wire of the motor to the common pin of the Amplifier circuit.
If you are using a bipolar stepper motor as a controller, then you would need to make a resistor-based circuit to create a virtual center tap wire to connect to the common pin of the amplifier circuit.
Then, connect the other 4 wires of the motor to the input pins of the amplifier circuit in any sequence.
Step 5: Connect the Stepper Motor Driver to the Amplifier Board
Connect the output pins of the amplifier circuitry to the input pins of the stepper motor driver. Here, a ULN2003-based unipolar stepper motor driver is used.
Step 6: Connect the Stepper Motor to Be Driven to the Driver
Step 7: Connect the Setup to Power
Connect the stepper motor driver and the amplifier circuit to a DC power source.
Step 8: Test the Setup
If the stepper motor does not move properly and keeps on stepping back and forth, double-check all the wiring connections and change the sequence of the 4 wires connecting the controller motor and the inputs of the amplifier.
Step 9: Share Tour Work
If you made the project, try sharing it with the community by clicking on 'I Made It!' below. You might inspire someone to make this project too!