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SO-ARM100 Robotic Arm Servo Motor 7.4V w/ 20 Inch Debugging Wire Reduction Ratio 1/191 Compatible w/ STS3215 Servo

SO-ARM100 Robotic Arm Servo Motor 7.4V w/ 20 Inch Debugging Wire Reduction Ratio 1/191 Compatible w/ STS3215 Servo

$39.82 USD
$39.82 USD
Sale Sold out
Taxes included. Shipping calculated at checkout.

About this item

  • High-Torque Performance Specs: Operates at 6V-7.4V with peak stall torque of 19.5kg.cm@6V, rated torque of 6.5kg.cm@6V, no-load speed of 0.238sec/60°@6V, running current of 150mA@6V (no load), and stall current of 2000mA@6V—delivering robust power for industrial equipment, robots, and small torque drive scenarios.
  • Included 20-Inch Debugging Wire: Flexible wire for effortless probing, error investigation, and connection testing—makes research, prototyping, and troubleshooting significantly easier and more efficient during development.
  • Compatibility: Uses on LeRobot SO-101 leader/follower arms. Fully compatible with Feetech ST-3215-C001 and Waveshare ST3215 servo motor.
  • One-Click Calibration: Install at any 360-degree position and use one-key calibration (via 40-address input 128) to set the center—exclusive to magnetic encoding for hassle-free setup, improved production efficiency, and reduced maintenance costs (unlike potentiometer servos that require pre-adjustment).
  • Advanced Magnetic Encoding: Features a 12-bit high-precision magnetic coding sensor for 360-degree continuous rotation with precise position control over a 360-degree range; supports multi-turn large-angle control with absolute feedback across ±7 turns (expandable to hundreds), retaining position data even after power loss (turns not saved).
  • TTL Serial Bus Control: Command signal via digital packet for easy integration; multiple servos can be daisy-chained on the same bus, enabling scalable setups in complex systems like robotics and automation.

Overview

  • Brand: Generic
  • Model Name: Reduction Ratio 1/191
  • Speed: 52 rpm
  • Voltage: 7.4 volts
  • Horsepower: 3 watts

Low stock: 10 left

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Reviews

  • ⭐⭐⭐⭐⭐

    Hannah Miller — Seattle, Washington
    I ordered several science activity supplies for projects at home. The product descriptions made it easier to compare the available options, and everything fit neatly into our learning space. Stemora made finding tools for hands-on activities feel simple and organized.

  • ⭐⭐⭐⭐⭐

    Daniel Foster — Austin, Texas
    I found a useful selection of electronics and robotics accessories for a beginner project. It was convenient to browse related components in clearly organized categories. I would consider shopping here again when planning another maker activity.

  • ⭐⭐⭐⭐⭐

    Lauren Bennett — Denver, Colorado
    The measurement and observation tools I selected worked well for the classroom activities I had planned. I especially appreciated being able to review the product details before ordering and choose items that matched the lesson requirements.

  • ⭐⭐⭐⭐⭐

    Jason Parker — Portland, Oregon
    I purchased a few storage items and small tools for organizing my maker workspace. The products helped keep components, wires, and project materials easier to sort and access. The overall shopping experience was straightforward and convenient.

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FAQ

What types of products does Stemora offer?


Stemora offers supplies for science experiments, microscopy, biology learning, measurement, laboratory organization, electronics, robotics, coding education, 3D printing, maker projects, and classroom activities. Available products and specifications may change over time.

Are Stemora products suitable for children?


Recommended ages vary by product. Please review the product description, manufacturer guidance, included warnings, and required skill level before purchasing. Products containing small parts, tools, electrical components, glass, or chemicals may not be suitable for young children.

Is adult supervision required?


Adult supervision is recommended for children and students, especially when using electrical components, sharp tools, heated equipment, glassware, small parts, or experiment materials. Customers are responsible for following all product instructions and safety precautions.

Can these products be used at home and in classrooms?


Many products may be suitable for classrooms, home learning, science projects, maker spaces, and hobby activities. Suitability depends on the specific product, learning environment, user experience, and intended activity.

How can I check what is included with a product?


Please review the product title, description, specifications, images, package quantity, and included-components section before ordering. Items shown for demonstration or scale in product images may not always be included.

How do I know whether an electronic or robotics part is compatible?


Check the listed dimensions, voltage, connector type, board compatibility, operating requirements, and supported platforms. Compatibility is not guaranteed unless it is specifically stated on the product page. Contact us before ordering if you need clarification.

When will I receive tracking information?


Tracking information is generally provided within 3–5 business days after an order is confirmed. In some cases, processing may take approximately 7–8 business days. Delivery may require an additional 4–5 business days after tracking becomes available, depending on the carrier and destination.

Why did my order arrive in separate packages?


Products in the same order may be shipped from different fulfillment locations. As a result, items may arrive separately and have different tracking numbers. You will not be charged additional shipping fees solely because an order is divided into multiple packages.

Can I change or cancel my order?


Contact us as soon as possible at vaioamaonaoak@gmail.com. We will try to assist, but changes or cancellations cannot be guaranteed once an order has entered processing or has been shipped.

What should I do if an item arrives damaged, defective, or incorrect?


Contact us promptly at vaioamaonaoak@gmail.com with your order number, a description of the issue, and clear photographs of the item, packaging, and shipping label. Please retain the product and original packaging while we review your request. Eligibility and available resolutions are subject to our Return & Refund Policy.

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