EH-3 TTL Smart Servo Motor
- Compact High-Performance Smart Servo – The EH-3 delivers up to 3kg stall torque, making it suitable for robotics, automation, educational platforms, and lightweight robotic joints.
- Compact Form Factor – Measuring 28.5 × 12 × 20mm and weighing only 11g, the EH-3 is designed for applications where space efficiency and precise motion are essential.
- Reliable Cored DC Motor – Equipped with a cored motor that provides smooth, consistent performance and dependable operation for precision robotic movement.
- Fast Response Speed – Offers a no-load speed of 120 RPM, delivering responsive and accurate motion for robotic arms, pan-tilt systems, and articulated mechanisms.
- TTL Serial Communication – Features a TTL communication interface for seamless integration with compatible servo controllers, embedded systems, and robotic development platforms.
- Stable 8V Operating Voltage – Designed to operate at 8V input voltage, ensuring reliable performance in compatible robotic and automation systems.
- Efficient Power Consumption – Draws a maximum stall current of 1A, balancing torque output with efficient power utilization.
- Versatile Robotics Applications – Ideal for robot joints, robotic arms, educational robots, automation equipment, research projects, and custom mechatronic systems.
- Simple System Integration – Compact dimensions and TTL connectivity make installation easy for both new designs and replacement applications.
- Designed for Precision Motion – Provides stable torque output, smooth operation, and repeatable positioning for demanding robotic applications.
- Trusted dealerDirect manufacturer partnership
- Pan-India deliveryInsured shipping, all states
- Post-sale supportTraining + service included
What makes it work
Energize Lab · EH Series
EH-3 TTL Smart Servo Motor
The EH-3 TTL Smart Servo Motor is genuine Energize Lab hardware from the EH Series — the same manufacturer behind Eilik, offering a compact 3kg-torque servo with a distinct connector design from its EM-series counterpart.
11g Compact
TTL Serial Control
120 RPM No-Load
EH-Series Build
Full Specifications
| Specification | Details |
|---|---|
| Product | EH-3 TTL Smart Servo Motor — genuine Energize Lab hardware, part of the EH Series |
| Product Category | Smart Servo Motor / Robotics Actuator Component |
| Stall Torque | 3kg (at rated 8V input) |
| No-Load Speed | 120 RPM |
| Stall Current | 1A maximum |
| Motor Type | Cored DC motor |
| xBoom SKU | xboom-146177 |
| Specification | Details |
|---|---|
| Communication | TTL serial connection, for integration with compatible servo controllers and microcontrollers |
| Input Voltage | 8V |
| Dimensions | 28.5 × 12 × 20mm |
| Weight | 11g |
| Series | Energize Lab EH Series (also includes the higher-torque EH-30 at 30kg) |
| Manufacturer | Energize Lab (Shenzhen Zhuneng Technology Co., Ltd.) — also the creator of the Eilik companion robot |
A Compact EH-Series Servo, Honestly Compared
EH-3 TTL Smart Servo Motor: Genuine Energize Lab Hardware
The EH-3 is genuine Energize Lab hardware, verified directly against the manufacturer’s own EH Series listing (alongside the larger EH-30). Energize Lab’s own product photography shows the EH-3 with a distinct external connector header on its housing panel — visually different from the smooth housing seen in Energize Lab’s EM-3 product photos, even though the two servos share an almost identical electrical spec sheet.
At 8V input, 1A stall current, 3kg torque, 120 RPM no-load speed, and near-identical 28.5 × 12 × 20mm dimensions, the EH-3 sits in exactly the same performance class as the EM-3 (Energize Lab’s servo directly confirmed to be used inside Eilik) — the two differ mainly in weight (11g vs. 9g) and the connector design visible in their respective product photos. Since Energize Lab doesn’t publish a plain-language explanation of what separates its EH and EM series, we’re stating this comparison exactly as measured rather than guessing at marketing reasons for it.
| Spec | EH-3 (this product) | EM-3 |
|---|---|---|
| Stall Torque | 3kg | 3kg |
| Dimensions | 28.5×12×20mm | 28.5×12×20mm |
| Weight | 11g | 9g |
| No-Load Speed | 120 RPM | 120 RPM |
| Voltage / Current | 8V / 1A | 8V / 1A |
| Connector (per product photos) | Visible pin header | Not visible in photos |
3kg Torque, Same Class as EM-3
Matches the torque and speed of the servo confirmed inside Eilik.
TTL Serial Control
Same communication protocol as Energize Lab’s EM Series.
Genuine Energize Lab
Verified directly against the manufacturer’s own EH listing.
Compact Footprint
28.5 × 12 × 20mm fits the same tight robotic assemblies.
See Every Detail
What It Is, and Where It Goes
The EH-3 is a smart servo motor — a self-contained rotary actuator with its own control electronics, built to be a joint or motion point inside a larger robotic assembly, not a standalone product on its own.
🤖 Robotics Actuator
🧩 Robot Joint Component
🎓 Educational Robotics Part
🔗 TTL Bus Servo
Robot Head & Neck Joints
Pan/tilt head movement in the same torque class as Eilik’s.
Small Robotic Arms
Elbow and wrist joints for lightweight arm builds.
Quadruped Leg Joints
Hip, knee, and ankle actuation in small-scale walkers.
Pan-Tilt Camera Mounts
Smooth, precise aiming for small onboard cameras.
Grippers & Claws
Compact gripping mechanisms for small manipulators.
Educational Robot Kits
An approachable servo for STEM and hobbyist builds.
From the Same Manufacturer Behind Eilik
The EH-3 is genuine Energize Lab hardware from the EH Series, verified directly against the manufacturer’s own product listing. It is not the specific servo Energize Lab has shown inside Eilik — that direct confirmation exists for the EM-3, a different (though nearly identically specified) part in Energize Lab’s separate EM Series. What the EH-3 does share is the same manufacturer, the same TTL control protocol, and the same 3kg/120RPM/8V performance class.
Built for Compact, Reliable Robotic Motion
The EH-3 TTL Smart Servo Motor brings genuine Energize Lab engineering to your robotics build.
💪
3kg Stall Torque
Strong enough for real robotic joints, not just toys.
⚖️
11g, 28.5×12×20mm
Compact enough for weight-sensitive assemblies.
🔌
TTL Serial Interface
Simple wiring for multi-servo robotic control buses.
🌀
120 RPM No-Load
Responsive, accurate movement for servo-driven mechanisms.
⚡
1A Max Stall Current
Modest power draw keeps small robot builds efficient.
🤖
Genuine Energize Lab
Verified against the manufacturer’s own EH Series listing.
Built for Robotics Builders and Makers
The EH-3 TTL Smart Servo Motor suits builders who need a compact, dependable servo from a proven manufacturer.
Educational Robotics
An approachable, well-documented servo for STEM projects.
Companion & Social Robots
The same manufacturer and torque class as Eilik’s own servo.
Small Robotic Arms
Compact torque for lightweight arm and gripper joints.
Quadruped & Walker Robots
Leg-joint actuation for small-scale walking robots.
Custom Mechatronics Projects
A dependable building block for original robot designs.
Prototyping & Research
A proven, well-specified actuator for early-stage builds.
See the Manufacturer’s Robots at Work
Energize Lab hasn’t published an EH-3-specific demo, so — honestly labeled — these are official Energize Lab videos of Eilik and Panxer, the robots built by the same manufacturer.
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