SparkFun
Hobby Motor with Encoder - Plastic Gear (Red)
· MPN: ROB-31141
Add motion and feedback to small robotics builds with this single DC gearmotor and integrated Hall effect speed encoder. Instead of simply driving a motor op...
Add motion and feedback to small robotics builds with this single DC gearmotor and integrated Hall effect speed encoder. Instead of simply driving a motor open-loop, your microcontroller can count encoder pulses to track wheel rotation and speed for more accurate navigation and speed control.
The motor uses a durable plastic gear train with a 1:48 ratio, making it suitable for small chassis, classroom robots and educational projects. The onboard Hall sensor reads a magnetic plate: detecting the South pole outputs a high level, while detecting the North pole outputs a low level.
It runs from a flexible 4.5V to 9V supply and uses a 6-pin detachable cable interface for tidy wiring to a motor driver or development board. This is the same motor and encoder assembly used in SparkFun XRP and AgXRP kits.
Please note: this product includes a single motor only. Most wheeled robotics projects will require at least two motors.
Features:
- Integrated encoder: Hall effect speed encoder for tracking motor rotation and speed.
- Plastic gear train: 1:48 ratio for a balance of speed and torque in small-scale builds.
- Power Compatibility: Operates smoothly on a flexible 4.5V to 9V supply, making it easy to power with standard battery packs or motor drivers.
- Easy Wiring: Features a 6-pin detachable cable interface for clean routing and easy connection to your motor driver or development platform.
- XRP Ready: This is the exact same high-quality motor and encoder assembly utilized in SparkFun XRP and AgXRP kits.
- Single motor: Includes one motor.
Specifications:
- Dimension (single motor): 80mm x 22.4mm x 25.8mm
- Voltage: 4.5~9V
- Gear Ratio: 1:48
- No Load RPM: 140RPM @4.5V
- No Load Current: 0.15A
- Stall Torque: 0.15N.M
- Stall Current: 0.75A @6V
- All at 6V - as tested in-house:
- No load speed: 240RPM
- No load current: 100mA
- Stall torque: 1kg-cm
- Stall current: 700mA
- Encoder resolution: 585 counts per revolution
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.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- 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.
- Stall torque
- The maximum twisting force a servo can produce when its output is held still and cannot move. It helps you judge whether the servo is strong enough for a robot joint, steering linkage, or other load.
- 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.
Find this product in
Robotics & Motion
DG01D-E Motor with Encoder Datasheet
Datasheet · 1.6 MB · Click any page to view full size
Supplier page — sparkfun.com
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