Toki Smart Servo RC-1 - 1g Micro Servo

Specifications

Source: Most data comes from the manufacturer but some data is sourced from our loyal community.

Last Updated:	2025-08-12
Modulation:	(add)
Torque:	4.8V: 0.21 oz-in (0.02 kg-cm)
Speed:	(add)
Weight:	0.03 oz (0.8 g)
Dimensions:	Length:1.50 in (38.1 mm) Width:0.35 in (8.9 mm) Height:0.12 in (3.0 mm)
Motor Type:	Electroactive Polymer
Gear Type:	(add)
Rotation/Support:	(add)
Rotational Range:	60°
Pulse Cycle:	(add)
Pulse Width:	(add)
Connector Type:	(add)

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The discontinued Toki Smart Servo RC-1 is an advanced actuator designed with the robotics and engineering communities in mind. While it functions as a high-performance servo, its "Smart" designation indicates the inclusion of advanced features, most notably a positional feedback wire. This third wire allows a microcontroller to read the servo's current position, a capability that is essential for creating true closed-loop robotic systems. The RC-1 is an ideal tool for building sophisticated robotic arms that can detect when they've hit an obstacle, for the legs of a walking robot that needs to adapt to uneven terrain, or for any project that requires the robot to have a sense of its own physical state.
The identity of the Smart Servo is its role as an intelligent building block for advanced robotics. It bridges the gap between a simple hobby servo and a much more expensive industrial actuator. For students and researchers in robotics, the RC-1 is an invaluable tool, providing the sensory feedback needed to implement advanced control algorithms, such as force control or compliant motion. It is a servo that is designed not just to move, but to inform.
Note that the weight of this servo is reported with bare leads (no connector).