Pololu 1366 High-Power Simple Motor Controller G2 - 18v25

The Pololu 1366 High-Power Simple Motor Controller G2 is a compact, user-friendly PWM motor controller designed to regulate speed and direction of brushed DC motors up to 25A continuous current at 18V maximum operating voltage. Professional roboticists, autonomous vehicle developers, and industrial automation engineers rely on this controller for its robust performance and straightforward serial/analog control interface. This device solves the critical challenge of precisely controlling high-power DC motors in space-constrained applications while maintaining thermal stability and protection against overcurrent conditions.

Product Overview

The Pololu 1366 G2 is built on advanced MOSFet-based H-bridge architecture that delivers efficient bidirectional motor control with minimal power loss. The controller accepts multiple input methods including TTL serial communication (115200 baud default), analog voltage inputs (0-5V), and RC PWM signals, making it exceptionally versatile for integration into diverse control systems. Its integrated thermal management and current limiting circuitry automatically protect the motor and controller from damage during stall conditions or excessive load scenarios. The compact 2.7 x 2.2 inch form factor allows installation in tight spaces while the exposed mounting holes facilitate secure mechanical integration.

This G2 generation controller features improved efficiency over previous models through optimized gate drive circuitry and reduced RDS(on) MOSFets, translating to lower heat generation and extended operational lifespan. The onboard status LED provides real-time feedback on controller state and error conditions, while the user-configurable parameters allow customization of acceleration profiles, maximum current limits, and serial command protocols. Protection mechanisms include over-temperature shutdown, overcurrent limiting, and undervoltage lockout to ensure reliable operation in demanding field conditions.

Key Specifications

Specification	Details
Product Type	PWM DC Motor Speed Controller with H-Bridge
Brand	Pololu Robotics and Electronics
Origin	Original/Authentic
Warranty	7 days on manufacturing defects
Shipping	1-5 days from Bengaluru
Delivery	7-8 days across India
Support	24/7 via Email and WhatsApp
Maximum Continuous Current	25A at 18V
Operating Voltage Range	5.5V to 18V DC
Control Interfaces	Serial (TTL), Analog (0-5V), RC PWM
Dimensions	2.7 x 2.2 x 0.8 inches
Weight	Approximately 50 grams

Key Features

• 25A Continuous Current Rating: Handles high-power motor applications up to 450W at 18V without derating, suitable for heavy-duty robotics and industrial equipment
• Multiple Control Interfaces: Supports TTL serial communication at 115200 baud, 0-5V analog inputs, and standard RC PWM signals for seamless integration with microcontrollers and receivers
• Bidirectional Motor Control: Full H-bridge configuration enables forward, reverse, and dynamic braking operation with smooth acceleration ramp control
• Integrated Protection Circuitry: Automatic over-temperature shutdown at 140°C, current limiting, and undervoltage lockout prevent damage to motor and controller during fault conditions
• Configurable Parameters: User-adjustable acceleration profiles, maximum current limits, and serial command protocols via configuration utility software
• Compact Form Factor: Measures only 2.7 x 2.2 inches with exposed mounting holes for space-efficient installation in confined chassis
• Status LED Feedback: Real-time indicator displays operational state, error conditions, and control signal reception for troubleshooting
• Low Heat Generation: Optimized MOSFet selection and gate drive design minimize power dissipation for extended runtime in portable applications

Applications and Use Cases

• Autonomous Mobile Robots: Drive dual-motor differential drive systems with synchronized speed control and directional command via serial protocol from onboard microcontroller
• RC Vehicle Control: Accept RC receiver PWM outputs to regulate motor speed and direction in remote-controlled cars, boats, and aerial platforms with smooth acceleration curves
• Industrial Conveyor Systems: Manage variable-speed conveyor belt motors with current limiting to prevent mechanical shock and enable soft-start operation
• Wheelchair and Mobility Devices: Power dual-motor propulsion systems with joystick analog input for proportional speed control and emergency braking capability
• Robotic Manipulator Arms: Control individual joint motors with precise speed regulation and position feedback integration through serial communication interface
• Electric Vehicle Propulsion: Drive high-power traction motors with thermal protection and current monitoring for safe operation in battery-powered vehicles

How to Use

Begin by connecting your 5.5V to 18V DC power supply to the motor power input terminals, ensuring proper polarity to avoid damage. Connect your DC motor leads to the motor output terminals, then select your preferred control method: for serial control, connect the TTL serial lines (RX, TX, GND) to your microcontroller; for analog control, connect 0-5V signal to the analog input pin; for RC PWM control, connect the receiver output directly to the PWM input pin. Before powering on, verify all connections are secure and use a current-limited power supply set to 5A maximum during initial testing to detect any wiring errors.

Once powered, the status LED will illuminate to confirm operation. Configure the controller parameters using Pololu's configuration utility software via the serial interface to set your desired maximum current limit, acceleration ramp time, and control mode. Test the controller with no load first by sending control commands and observing motor response, then gradually increase load while monitoring current draw and controller temperature. For serial communication, use the documented command protocol to send speed and direction values; the controller will smoothly ramp the motor to the commanded speed within your configured acceleration profile. Always ensure adequate heatsinking if continuous operation near the 25A limit is required.

Frequently Asked Questions

What is the maximum power output of the Pololu 1366 G2 18v25?

At the maximum rated voltage of 18V and continuous current of 25A, the controller can deliver up to 450W of mechanical power to the motor. However, actual power delivery depends on motor efficiency and load characteristics. The controller itself dissipates power as heat based on current draw and MOSFET resistance, so thermal management becomes important at sustained high currents above 15A.

Can I use this controller with 12V motors and power supplies?

Yes, the Pololu 1366 G2 operates across the entire 5.5V to 18V range, making it fully compatible with 12V systems. At 12V, the controller can still deliver 25A continuous current, providing 300W of power. This makes it ideal for 12V battery-powered robotics projects and automotive applications. Ensure your power supply can provide adequate current for your motor specifications.

How do I switch between serial, analog, and PWM control modes?

The controller automatically detects which control input is being used based on signal presence. If a valid serial signal is detected, it prioritizes serial mode. If no serial signal is present but analog voltage is detected, it switches to analog mode. PWM mode is selected when only PWM pulses are present. You can also use the configuration utility to lock the controller into a specific control mode if desired for your application.

What happens if the motor stalls or gets blocked?

The controller includes current limiting protection that automatically reduces the PWM duty cycle to maintain current below your configured maximum limit. This prevents the motor from drawing excessive current that could damage the controller or power supply. If the motor remains stalled for an extended period, the controller will eventually trigger thermal shutdown if internal temperature exceeds 140°C, then automatically restart once it cools below 120°C.

Can I control multiple motors with one controller?

The Pololu 1366 G2 is designed as a single-motor controller with one H-bridge output. To control multiple motors, you need one controller per motor. However, you can daisy-chain multiple controllers using the same serial communication line since each can be assigned a unique device ID through the configuration utility, allowing a single microcontroller to address multiple motor controllers independently.

When will I receive my order?

Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.

What is your return and warranty policy?

We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.

Are bulk discounts available?

Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.

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• Returns: 7-day return policy on manufacturing defects only

Buy Pololu 1366 High-Power Simple Motor Controller G2 - 18v25 Online in India

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