# Stepper Motor Serial Control This Arduino project allows you to control a **stepper motor** via serial commands. You can rotate the motor by specifying the desired angle (positive or negative) in degrees. --- ## Features * Control a stepper motor through the Arduino Serial Monitor (or any serial terminal). * Accepts commands like: ``` rotate 180 degrees rotate -270 degrees ``` * Supports both clockwise and counter-clockwise rotation. * Provides feedback in the serial monitor. --- ## Hardware Requirements * Arduino board (e.g., Uno, Nano, Mega) * Stepper motor (e.g., 28BYJ-48 or NEMA 17) * Stepper motor driver (ULN2003, L293D, or similar) * Jumper wires and power supply --- ## Wiring The pins used in the sketch are: | Stepper Pin | Arduino Pin | | ----------- | ----------- | | IN1 | 8 | | IN2 | 9 | | IN3 | 10 | | IN4 | 11 | > Adjust wiring to match your stepper motor driver. Update the `Stepper` object in code if using different pins. --- ## Software Setup 1. Install the Arduino IDE. 2. Connect your Arduino board via USB. 3. Open the sketch in the IDE. 4. Upload it to your board. --- ## Usage 1. Open the **Serial Monitor** (`Ctrl+Shift+M`) in the Arduino IDE. 2. Set baud rate to **9600**. 3. Type commands in the following format: ``` rotate degrees ``` * Positive angle → rotates **clockwise** * Negative angle → rotates **counter-clockwise** ### Example Commands * `rotate 90 degrees` → rotate motor **90° clockwise** * `rotate -180 degrees` → rotate motor **180° counter-clockwise** --- ## Adjustments * **Steps per Revolution**: Update ```cpp const int stepsPerRevolution = 200; ``` to match your motor specification (e.g., 2048 for 28BYJ-48). * **Pin Mapping**: Change ```cpp Stepper myStepper(stepsPerRevolution, 8, 9, 10, 11); ``` if your wiring is different. --- ## Notes * Ensure your stepper motor is powered adequately. Some motors require an external power supply. * Running the motor too fast may cause missed steps—experiment with delays or acceleration if needed. * This code is a basic implementation. For smoother motion, consider libraries like **AccelStepper**. # robotics-stepper-motor writen by leandre