DFRobot
2.5g 360 degree Micro Servo (0.45kg)
An ultra-compact 2.5g micro servo with 360-degree continuous rotation, ideal for micro robots and space-constrained projects. The coreless motor and POM gear...
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An ultra-compact 2.5g micro servo with 360-degree continuous rotation, ideal for micro robots and space-constrained projects. The coreless motor and POM gears deliver smooth, reliable rotation in a tiny form factor measuring just 19.6 × 8.0 × 16.3mm.
Controlled via standard PWM servo signals, it connects directly to an Arduino output pin without a motor driver. Write 0° for full-speed clockwise, 90° to stop, and 180° for full-speed counterclockwise using the Arduino Servo library.
Key Features
- 360° Continuous Rotation – Full rotational motion with speed and direction control via PWM
- Ultra-Lightweight – Only 2.9g, perfect for micro robots and lightweight builds
- Coreless Motor – Smooth operation with MOSFET driver
- Standard PWM Control – 50Hz, 900–2100µs pulse width, 1500µs midpoint
- POM Gears – Durable engineering plastic gears
Specifications
- Model – D2S51
- Voltage – 4.8–6.0V DC
- Speed (no load) – 0.09 sec/60° at 4.8V, 0.07 sec/60° at 6.0V
- Torque (stall) – 0.45 kg·cm at 4.8V, 0.60 kg·cm at 6.0V
- Working Current – <0.10A at 4.8V, <0.10A at 6.0V
- Stall Current – <0.5A at 4.8V, <0.5A at 6.0V
- Dimensions – 19.6 × 8.0 × 16.3mm
- Weight – 2.9g
- Operating Temperature – -20°C to 60°C
Ideal For
- Micro robots and miniature motorised builds
- Projects with tight space constraints
- Arduino-controlled continuous rotation applications
Package Contents
- 1× Micro servo (D2S51)
- 4× Servo horns (assorted shapes)
- 2× Mounting screws
- 2× Servo horn attachment screws
Jargon buster
Plain-language definitions for the technical terms used above.
- 5G
- 5G is the fifth-generation mobile network standard, offering higher-speed, lower-latency wireless data than earlier 4G/LTE networks. 5G modems can move large amounts of data over cellular networks but may draw significant current and need a suitable aerial and reliable power.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- kg·cm
- A torque unit often used for hobby servos, meaning how many kilograms of force the servo can hold at a 1 cm arm length. A higher kg·cm rating means the servo can move or hold heavier loads, but power supply current needs may also increase.
- 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.
- servo
- A servo is a motor with built-in position control, usually told to move to a specific angle by a control signal. It matters when you need repeatable movement, such as steering, arms, flaps, or linkages, rather than continuous spinning.
- 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
Supplier page — dfrobot.com
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Related Tutorials
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