L9110 Fan Motor Propeller Module for Fire-Fighting Robot

L9110 Fan Motor Propeller Module for Fire-Fighting Robot is an integrated mini propeller blower board powered by an onboard L9110 H-bridge motor driver IC. Designed for educational fire-fighting robots, hovercraft demonstrators, and automated wind generators, it allows microcontrollers to easily control propeller rotation direction (clockwise/counter-clockwise) and speed via pulse-width modulation (PWM) to blow out candles and extinguish flame sources during robotic competitions.

Key Features:

• Integrated L9110 H-Bridge Driver: High-efficiency monolithic H-bridge IC drives the DC motor with bidirectional direction and PWM speed control.
• High-Efficiency Blower Propeller: Includes a 75mm 4-blade plastic fan propeller generating a focused, high-velocity airflow column.
• Simple 2-Pin Control Logic: Controls forward rotation, reverse rotation, and motor braking using just two microcontroller digital/PWM pins.
• Direct Microcontroller Compatibility: Built-in driver stage protects microcontroller GPIO pins from high motor current and inductive kickback.
• Compact Mounting Layout: Sturdy PCB base with mounting holes enables secure attachment to robot front bumpers.
• Low Operating Voltage: Runs efficiently from standard 5V power rails, suitable for USB power banks and 4-cell AA battery packs.

Technical Specifications:

• Operating Logic & Motor Voltage: 3.3V to 5.0V DC (maximum rating 9.0V DC)
• Operating Current: 200 mA to 400 mA under continuous airflow load
• Peak Motor Current: Up to 800 mA peak surge current
• Driver IC: L9110 / HG7881 Dual H-Bridge Motor Driver IC
• Motor Type: Coreless DC miniature high-speed motor
• Control Interface: 2 digital TTL / PWM input pins (INA, INB)
• Operating Temperature: -20°C to +70°C

Mechanical Specifications:

• Form Factor: Integrated motor and driver PCB assembly
• PCB Construction: Double-sided FR4 fiberglass board with red protective solder mask
• Propeller Diameter: 75.0 mm plastic fan propeller
• Mounting Hole: 1x 3.0 mm center mounting hole for robot chassis attachment
• Header Type: 4-pin male pin header with 2.54mm pitch
• Weight: Approximately 22 g (including motor and propeller)

Dimensions:

• Module Length: 35.0 mm
• Module Width: 26.0 mm
• Overall Height: 42.0 mm (including motor shaft and propeller clearance)

Pinout and Wiring:

• GND: Ground reference power connection (0V)
• VCC: Positive DC power supply (+5V DC recommended)
• INA: Motor direction / PWM control pin A connected to microcontroller GPIO/PWM
• INB: Motor direction / PWM control pin B connected to microcontroller GPIO/PWM

Datasheet Reference:

• Refer to the L9110 / HG7881 H-Bridge Motor Driver IC engineering datasheet and propeller thrust curves for control logic truth tables and maximum PWM switching frequencies.

Commonly Used in:

• Autonomous fire-fighting contest robots locating and extinguishing candle flames
• Miniature air-boat, hovercraft, and thrust-driven mobile robot demonstrators
• Automatic ventilation and airflow cooling fans for sensitive sensor enclosures
• STEM robotics workshops introducing H-bridge motor control and PWM speed regulation

Applications:

• Fire-fighting robot flame extinguisher
• Miniature hovercraft thrust motor
• Smart home temperature-triggered cooling fan
• Wind generation and aerodynamic physics demo
• Educational motor driver programming trainer

Equivalent Models:

• HG7881 Motor Fan Module
• L9110S Dual Motor Driver Board
• Coreless DC Motor Blower Module
• Keyestudio Fan Motor Module

Package Includes:

• 1 × L9110 Fan Motor Propeller Module for Fire-Fighting Robot