Waveshare ST3215

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Technical Specifications

Last Updated: 2026-10-08

Identity
Brand
Product Number	ST3215 Servo
Category	Robotics
Performance
Torque	12.0V416.62 oz-in
Speed	12.0V0.22 sec/60°
Running Current	12.0V0.200 A
Stall Current	≤2.7 AAbove Average
Physical
Weight	2.43 ozAverage
Shape	Boxed
Dimensions	L 1.78 in W 0.973 in H 1.378 in
Case Material	Plastic
Drivetrain
Motor Type	Brushed
Gears	Metal / Steel
Gear Spline/Teeth	25 T
Shaft Size	5.9 mm
Rotation Mode	Multi-turn
Control & Signal
Modulation	Digital
Rotational Range	360°
Mechanical Limit	No Limit
Angle Sensor	Magnetic Encoder
Control System	TTL
Programmable	Yes
Resolution	4,096 pulse/rev
Operating Modes	Position, Velocity, Step
Electrical & Environment
Operating Voltage	6–12.6 V
Idle Current	0.200 A
Connectivity
Connector	JST
Baud Rate	38.4 Kbps–1 Mbps

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Disclaimer: Most data is sourced from the manufacturer. Some data is sourced from our loyal community and with the help of AI. We aim for accuracy but are not responsible for inaccurate information.

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*Based on known specs.

Class Comparison

Weight	Average Lighter than 35% of 1902 Digital Standard servos
Stall Current	Above Average Lower draw than 68% of 539 Digital Standard servos

Performance Analysis

Torque Density	6.0380 oz-in/g
Torque-to-Volume Ratio	174.57 oz-in/in³
Speed-to-Weight	0.06528 (1/sec·g)
Speed-Torque Trade-off	92.48
Current-per-Torque Ratio	0.0065 A/oz-in
Idle-to-Running Current Ratio	1.000
No-Load vs Stall Current Spread	13.50
Voltage Range Width	6.6 V Wider voltage range than 99% of 1539 Digital Standard servos