A: This is almost always a power issue. First, ensure you are using an external power supply for the motors via EXT_PWR . Second, verify that the 5V-EN jumper has been removed. Finally, check that all ground (GND) connections are common between the Arduino, the shield, and the external supply.
4 DC motor channels (M1, M2, M3, M4) OR 2 Stepper motors.
The is a functional but fragile L293D-based motor shield. To use it successfully: hw 130 motor control shield for arduino datasheet better
A: This is difficult. SD card shields often use SPI pins (D11-D13), which are the same pins the HW-130 uses for its shift register. A direct conflict will prevent either shield from working correctly.
// HW-130 L293D shield: control 2 DC motors A: This is almost always a power issue
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// Stop analogWrite(enA, 0); analogWrite(enB, 0); delay(1000); Finally, check that all ground (GND) connections are
// Create a software serial port for Bluetooth on pins 10 (RX) and 11 (TX) SoftwareSerial BTSerial(10, 11);
Use the Stepper.h library with steps per revolution = 200 (common).
This means the HW-130 is designed for small to medium-sized DC motors, not for heavy-duty industrial motors. Exceeding these current limits can cause erratic behavior or damage the chip.
// Decrease speed for (int i = 255; i >= 0; i--) motor1.setSpeed(i); motor1.run(FORWARD); delay(5);