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INTRODUCTION This is the DFRobot TT Micro DC geared motor with encoder. It is a motor with a 120:1 gearbox and an integrated quadrature encoder that pro...

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INTRODUCTION 

This is the DFRobot TT Micro DC geared motor with encoder. It is a motor with a 120:1 gearbox and an integrated quadrature encoder that provides a resolution of 16 pulse single per round giving a maximum output of 1920 within one round. With an Arduino controller and motor driver, applications for this include a closed-loop PID control or PWM motor speed control. This motor is an ideal option for mobile robot projects. The copper output shaft, embedded thread and reinforced connector greatly extends the motor's service life. The encoder interface is compatible with DFRobot's Gravity interface. 


SPECIFICATION 

  • Gear ratio: 120:1
  • No-load speed @ 6V: 160 rpm
  • No-load speed @ 3V: 60 rpm
  • No-load current @ 6V: 0.17A
  • No-load current @ 3V: 0.14A
  • Max Stall current: 2.8A
  • Max Stall torque: 0.8kgf.cm
  • Rated Torque: 0.2kgf.cm
  • Encoder Operating Voltage: 4.5~7.5V
  • Motor Operating Voltage: 3~7.5V (Rated voltage 6V)
  • Operating Ambient Temperature: -10~+60°C
  • Weight: 50g

DOCUMENTS 


SHIPPING LIST 

  • Micro DC Motor with Encoder-SJ02 x1
  • JST 2-Pin motor cable x1
  • JST 4-Pin encoder cable x1

Jargon buster

Plain-language definitions for the technical terms used above.

encoder
A device attached to a motor or shaft that reports movement, such as rotation steps or position. In a pump system, an encoder can help measure or control how much the motor has turned, which affects how repeatable the watering amount can be.
motor driver
An electronic circuit that lets a low-power controller switch and control a motor that needs more current than the controller pins can safely provide. Checking motor driver support matters because pumps and motors usually cannot be connected directly to a microcontroller output.
PWM
Pulse Width Modulation is a way for a digital pin to simulate variable output power by switching on and off very quickly. It matters for controlling things like LED brightness, motor speed, or servo-style signals from a microcontroller pin.
Thread
A low-power wireless mesh networking standard designed for smart home and IoT devices. It matters because Thread devices can relay messages through each other, helping build reliable networks for sensors and controllers.
Torque
A twisting force that causes something to rotate, usually measured in newton-metres or kilogram-centimetres. It matters when choosing motors, servos, gears, and tools because higher torque is needed to lift heavier loads, turn larger wheels, or move mechanisms without stalling.

Motor Dimension Drawing

Mechanical Drawings · 113.7 KB · Click any page to view full size

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RoHS Certificate

Compliance · 650.5 KB · Click any page to view full size

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Supplier page — dfrobot.com

Supplier Description · 351.2 KB · Click any page to view full size

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Related Tutorials

Free guides on learn.littlebird.com.au

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