// Enable both channels (if jumpers are removed, we need this) digitalWrite(ENA, HIGH); digitalWrite(ENB, HIGH);
// Motor A Reverse, Motor B Forward digitalWrite(IN1, LOW); digitalWrite(IN2, HIGH); digitalWrite(IN3, HIGH); digitalWrite(IN4, LOW); delay(2000); hw 130 motor control shield for arduino datasheet
void loop() // Ramp up speed from 0 to 255 for (int speed = 0; speed <= 255; speed++) analogWrite(ENA, speed); analogWrite(ENB, speed); delay(10); // Enable both channels (if jumpers are removed,
int currentPin = A0; float voltage, current; void setup() Serial.begin(9600); | | Motors only go one speed |
delay(1000);
// HW 130 Motor Shield Basic Test // Pins predefined by shield layout int IN1 = 4; int IN2 = 5; int IN3 = 6; int IN4 = 7; int ENA = 3; // Jumper on JP2 = full speed int ENB = 11;
| Problem | Likely Cause | Solution | | :--- | :--- | :--- | | Motors don't spin | No power to Vs terminal | Connect 6V–12V battery. | | Motors spin but Arduino resets | Insufficient power or missing ground | Connect GND of battery to shield GND. Use separate battery for motors. | | Motors only go one speed | ENA/ENB jumpers still on | Remove JP2/JP3 to use PWM. | | Overheating quickly | Motor stall current >2A or voltage >12V | Reduce load, add heatsink, or lower voltage. | | Current sense reads zero | No jumper on CS pin (or motor not running) | The CS pins are open by default; you don't need a jumper—just read voltage. | | Shield gets very hot | PWM frequency too low (audible range) | Default 490Hz on pins 3/11 is fine. Don't reduce frequency. | Part 7: Comparison with Other Shields | Feature | HW 130 (L298N) | L293D Shield | TB6612FNG Shield | | :--- | :--- | :--- | :--- | | Max Current per channel | 2A (3A peak) | 0.6A | 1.2A (3.2A peak) | | Voltage Drop | ~2V | ~1.5V | ~0.5V | | Efficiency | Low (linear) | Low | High (MOSFET) | | PWM Frequency | Up to 25kHz | Up to 5kHz | Up to 100kHz | | Cost | $5–$8 | $10–$12 | $12–$15 | | Best For | High current, low cost | Small servos/gearmotors | Battery-powered robots |