Mini L293D Dual H-Bridge Motor Driver Module for Arduino & DIY Robotics

The Mini L293D Motor Driver Module is an ultra-compact, dual H-bridge motor controller engineered to drive two DC motors bidirectionally or one 4-wire bipolar stepper motor. Built around the popular L293D IC, it features integrated flyback clamp diodes to protect control logic against inductive back-EMF voltage spikes. Designed with standard 2.54mm pin headers, it easily interfaces with Arduino, ESP32, Raspberry Pi, STM32, and other microcontrollers for robotics, line followers, and automation projects.

Key Specifications

• Driver Chip: L293D Dual H-Bridge Motor Controller

• Motor Supply Voltage (Vm): 4.5V to 25V DC (operates up to 36V max)

• Logic Voltage (Vcc): 5V DC (TTL / CMOS compatible)

• Continuous Output Current: 600 mA per channel

• Peak Output Current: 1.2 A per channel (non-repetitive)

• Motor Channels: Controls up to 2 DC motors (bidirectional) or 1 stepper motor

• Speed Control: Supports PWM (Pulse Width Modulation) via enable pins

• Protection Features: Internal back-EMF kickback diodes & thermal shutdown protection

Common Applications

• 2WD & 4WD smart robot car chassis (yellow BO gear motors)

• Line tracking, obstacle avoiding, and Bluetooth/Wi-Fi controlled robots

• Stepper motor positioning systems

• DIY robotic arms, motorized pan-tilts, and STEM educational kits

Pinout & Connection Guide

• VCC / 5V: Microcontroller 5V logic supply

• GND: Common system ground

• VIN / VM: External power supply for motors (battery/adapter)

• IN1, IN2 / IN3, IN4: Direction control logic inputs from microcontroller pins

• ENA / ENB: Speed control via PWM (remove jumper to enable PWM control)

• OUT1, OUT2 / OUT3, OUT4: Motor terminal connections