The Arduino’s 5 V regulator is not designed to supply the high current (hundreds of milliamperes to amperes) that motors demand. If you connect a motor directly to the Arduino 5 V pin, you risk overheating the voltage regulator or damaging the main chip.
Many developers have shared their own code, wiring diagrams, and pinout information for the HW‑130 on GitHub. For instance:
The HW-130 motor control shield is a popular, budget-friendly expansion board designed for Arduino UNO and Mega boards. It is based on the legacy L293D dual H-bridge motor driver integrated circuit. This comprehensive guide serves as an extended datasheet and technical reference to help you get your robotics projects up and running. Technical Specifications hw 130 motor control shield for arduino datasheet free
The Arduino and the motor shield share the same power source. Power supplied to the Arduino DC jack will also power the motors (Only recommended for low-power, 5V-9V motors).
While many online stores list the HW‑130 shield, some of them provide free downloadable resources. For example, the following links contain product descriptions and often include PDF datasheets or pinout references: The Arduino’s 5 V regulator is not designed
Here's a simple example code to get you started:
Servo servo1;
: Two L293D dual H-bridge motor drivers and one 74HC595 shift register. Output Channels 4 bi-directional DC motors with individual 8-bit speed selection. 2 stepper motors (unipolar or bipolar). 2 dedicated headers
Ensure you have an external power source connected to EXT-PWR . The Arduino's USB power is insufficient for most motors. For instance: The HW-130 motor control shield is
delay(2000);
: 2 dedicated connections for 5V hobby servos connected to the Arduino’s high-resolution timers. Output Current : 600mA per channel (1.2A peak current).