Pins 2 and 13 are usually free, along with the Analog pins (A0–A5), which can also be used as digital I/O for sensors. 4. How to Use the HW-130 with Arduino
This happens when motors draw too much current from the Arduino's 5V rail. Always use external power for the shield. hw 130 motor control shield for arduino datasheet
The (often referred to interchangeably with the L293D Motor Drive Shield) is one of the most versatile and affordable tools for hobbyists looking to add motion to their Arduino projects. Whether you are building a four-wheel-drive robot, a pan-tilt camera system, or a basic CNC machine, this shield provides the necessary power handling to bridge the gap between delicate microcontrollers and power-hungry motors. Pins 2 and 13 are usually free, along
The L293D chips can get hot. If you are drawing close to 600mA continuously, consider sticking a small aluminum heatsink onto the ICs. Conclusion Always use external power for the shield
The HW-130 features a dedicated terminal for external power. Because Arduino pins cannot provide enough current for motors, you should connect an external battery pack (typically 6V–12V) to the terminals.
74HC595 (Used to expand pins for motor control) Input Voltage (Motor Power): 4.5V to 25V DC