R0 robot arm with 3 degrees of movement

R0 robot arm with 3 degrees of freedom

Cognition Factory GmbH | A-000000-01581
Check out Cognition Factory’s robot arm: strong, reliable, and programmable using a Python API (available online). It is equipped with Dynamixel MX-106R servo motors, the most powerful servo motors in the Dynamixel range. DISCONTINUED.
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R0 robot arm with 3 degrees of freedom

What’s so special about the r0 robot arm? The r0 (pronounced [ˈrəʊ]) robot arm with 3 degrees of freedom is a simple way of introducing people to the most commonly used robots in the world of industry. With its three degrees of freedom, it offers users the possibility to discover the basic operational principles of a classic manipulator arm.

Whether you are a teacher, a researcher, a student or a robot enthusiast, this mechanism is the perfect solution if you are looking for a powerful, silent, and user-friendly robot arm.

The robot arm is fitted with a 3D printer and Dynamixel servo motors. The r0 robot arm is equipped with three Dynamixel MX-106R servo motors, the most powerful servo motors in the Dynamixel range, with high-level control features. They are also very precise.

NOTE: This robot arm does not come with a tactile gripper (available as an option).

Testing the r0 robot arm with 3 degrees of freedom

We put this robot arm to the test under real conditions. The various steps are described below:

Setting up a connection:

You can set up a quick connection to the r0 robot arm allowing you to control it:

  • Via Wifi: The robot is shipped with an USB WiFi adapter. It can be controlled from a web page.
  • Via LAN: You can connect to the robot via your local DHCP router or use a static IP address
  • Via SSH: You can connect to the robot using SSH.

Using the web interface

Giving top priority to user experience, the manufacturer has designed a demo web interface which offers an overview of the robot arm.

A first button enables the motors. Once enabled, the arm is operational and can be steered using two cursors.
As its name indicates, the Robot Control Center window lets you control the robot’s position within its operating space.
The first cursor in the left-hand window controls the arm within a plane, while the right-hand cursor controls its vertical position.

Robot Control Center for r0 robot arm with 3 degrees of freedom

Using the camera

The robot is also fitted with a camera as an end effector (connected directly to the controller via USB), which can be used to control the robot arm by vision for example. So it would be entirely possible to devise an application for following faces, balls or colours using this robot.

The camera is attached to the robot with an ISO 9409-1 flange, which allows you to replace the camera with conventional grippers (subject to working load limits).

Taking it further: Cognition Factory’s API

For more sophisticated applications, the manufacturer provides a Python API enabling you to simply and effectively explore this robot arm’s full potential.

Find out more about the API on the manufacturer’s website: http://doc.cognitionfactory.eu/r0/api.html

Specifications of the r0 robot arm with 3 degrees of freedom

  • Mechanical and electrical specifications:
    • Degrees of freedom: 3
    • Reach: 0.45 m
    • Max. payload: 0.5 kg
    • 3 Dynamixel MX106R motors
    • Logitech Quickcam
    • Supply: 12 V DC
    • Consumption: 60 W
  • Workspace:
    • Rotating base: -135°; 135°
    • Shoulder joint: -60°; 85°
    • Elbow joint: -55°; 50°
    • Link lengths: 0.19 m; 0.19 m
  • Onboard PC:
    • Controller: OLinuXino A20
    • Processor: Cortex-A7 dual-core @ 1 GHz
    • RAM : 512 MB
    • Internal storage capacity: 4 GB
  • I/O:
    • Ethernet
    • 2 x USB 2.0
    • 2 x RS-232
    • 1 x PWM
    • 1 x SPI
    • 4 x GPIO
    • Dynamixel RS-485

 

Below is a diagram of Cognition Factory’s r0 robot arm:

ROS-compatible Cognition Factory’s r0 robot arm:

Resources for the r0 robot arm with 3 degrees of freedom

In an effort to get your robot arm up and running quickly, Cognition Factory has produced a quick start guide, as well as a manual with detailed specifications. For the most updated documentation refer to: http://doc.cognitionfactory.eu

Quick start guide for the r0 robot arm with 3 degrees of freedom

Quick start guide for the r0 robot arm with 3 degrees of freedom

Technical specifications of the r0 robot arm with 3 degrees of freedom

Technical specifications of the r0 robot arm with 3 degrees of freedom

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