KeiganMotor KM-1S

A motor module® to makes robots amazingly easy.

・There are 3 types of lineups that can be selected for each purpose such as torque, size, etc.
・Operates at 5V up to 2.4A & can be used for a long time with a mobile battery
・Supports devices such as smartphones, tablets, PC’s, and Raspberry Pi
・Supports languages such as Python /Arduino /Node.js /Node-RED


The KM-1S Motor Module® is a product specialized for rapid prototyping (rapid prototype production).

Unlike the traditional integrated KM-1U, it features a separate controller part and motor part.

Main Function Introduction

『Moving MechatroWego』by operating KM-1S

By dividing the controller and motor, it’s possible to install the KeiganMotor in a more limited space.

※The above features are shared with the KM-1U.

Product Spec Details

Model NumberKM-1S Motor Module®
Compatible DevicesSmartphone, tablet, PC, singleport microcomputers, etc.
Power Supply(※1)
① or ② 
①External power supply: 5V Maximum 2.4A
②Battery: Universal USB mobile battery can be used
Communication Method
① or ②
①Wireless: Bluetooth Low Energy
②Wired: USB (Micro B) , I2C serial communication
Motor Configuration Outer rotor type brushless motor (permanent magnet synchronous motor) gearless direct drive
Motor Maximum TorqueSee comparison chart below
Motor SpeedSee comparison chart below
Motor Encoder14 bit magnetic rotary encoder (0.05°)
Motor SensorAcceleration/gyro 6-axis sensor

※1 USBType A to C cable is included with the product.

Catalog and 3D Data Download

Please download the instruction manual and 3D data from the following.

取扱説明書(ver.2.0)  パンフレットチラシ(ver.2.0)  KM-1S 3Dデータ(IGES,STEP)  取付寸法・図面データ

オーバーハング荷重 (PDF)

Extensive Customer Support

KeiganMotor is not just about functionality.
We also offer extensive customer service for everyone who purchases.

Settings After Purchasing

※In preparation.
Please refer to the KM-1U video below for application settings.

動画を見る

Detailed Language Usage and Update Information

We have set up a document site that can be widely used from people who operate motors for the first time to engineers.
The latest update information for the product is also included, so please use it.

ドキュメントサイト   ファームウェアアップデート

When Trouble Occurs

If you have any questions or inquiries, please use the FAQ site below.

FAQサイト   お問合せ

KM-1S Lineup

There are 3 types of motors in the KM-1S series: small, medium, and large.
Each has its advantages, so please purchase the product that best suits your purpose.

KM-1S-M4021 (Small)

KeiganMotor Motor Module®

Motor Diameter: Φ40mm
Motor Weight: 69g

The smallest product in the KM-1S series.
It is ideal when you do not need much torque or when the installation space is limited.

The product is reasonably priced and popular.

KM-1S-M4625 (Medium)

KeiganMotor Motor Module®

Motor Diameter: Φ46mm
Motor Weight:
91g

This is a medium-sized motor product with the closest performance to the KM-1U.

This product is recommended if it has been verified with KM-1U and installation space is limited.

KM-1S-M6829 (Large)

KeiganMotor Motor Module®

Motor Diameter: Φ69mm
M
otor Weight:
195g

Largest motor product in the KM-1S series.

Recommended when you need higher torque than KM-1U.

KeiganPi Starter Kit KM-1S (Small)

KeiganMotor Motor Module®

・MicroSD card 32GB ×1
・Raspberry Pi 4 Model B (2GB RAM) ×1
・Heat sink case ×1
・Power adapter×1
・Physical PUSH button ×1
・MicroHDMI to HDMI conversion adapter×1
・Communication cable (MicroUSB) ×1
・KM-1S-M4021 (small) ×1
・KM-1 common power cable (USB Type C) ×1

KeiganPi Starter Kit KM-1S (Medium)

KeiganMotor Motor Module®

・MicroSD card 32GB ×1
・Raspberry Pi 4 Model B (2GB RAM) ×1
・Heat sink case ×1
・Power adapter ×1
・Physical PUSH button ×1
・MicroHDMI to HDMI conversion adapter ×1
・Communication cable (MicroUSB) ×1
・KM-1S-M4625 (medium) ×1
・KM-1 common power cable (USB Type C) ×1

KeiganPi Starter Kit KM-1S (Large)

KeiganMotor Motor Module®

・MicroSD card 32GB ×1
・Raspberry Pi 4 Model B (2GB RAM) ×1
・Heat sink case ×1
・Power adapter ×1
・Physical PUSH button ×1
・MicroHDMI to HDMI conversion adapter ×1
・Communication cable (MicroUSB) ×1
・KM-1S-M6829 (large) ×1
・KM-1 common power cable (USB Type C) ×1

KM-1S Dedicated Options

KM-1S Dedicated Options
Please note that it can not be used with the KM-1U.

※After replacing a motor part, you need the motor parts modification operation.

M4021

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KM-1S motor (small) single item.
It can be replaced with another size motor.

M4625

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KM-1S motor (medium) single item.
It can be replaced with another size motor.

M6829

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KM-1S motor (large) single item.
It can be replaced with another size motor.

KM-1C

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KM-1S controller alone.
Other optional motors can be installed.

Options Common to KM-1 Series

An optional product that can be used for both KM-1U and KM-1S.

KeiganMotor
I2C Cable 0.2m

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Controls the KM-1 series from a device such as a single board microcomputer 4-pole cable for I2C communication.

USB 3.1 Type-A to C
Cable 0.5m

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An official USB cable that can be used in common with the KM-1 series. RoHS2 compatible with the Keigan logo.

Acrylic Turbtable

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A mat-type turntable that matches the motor. Ideal for displaying products. (You can choose from two types of black and and white)

Common Shaft (8mm)

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A shaft that can be mounted on the top.
The driving force can be transmitted to other mechanical parts via couplings and pulleys.

There are many other lineups and products, so please consider them.