Elephant Robotics Technology Myarm 300 PI 2023 (4011200001)

A human arm has seven degrees of freedom, and that seventh joint is what lets you reach around an obstacle while keeping your hand pointed where it needs to be. Industrial robot makers have long built redundant arms for exactly that reason, but the hardware has usually been large, heavy and expensive to experiment with. The Elephant Robotics Technology Myarm 300 PI 2023 (4011200001) puts that kinematic idea on a desk: an integrated 7-DOF robot arm with a Raspberry Pi 4B as its main control board, built for people who want to study, program and test redundant motion without first building a workcell around it.

Robots Europa, based in Dublin, supplies the myArm 300 Pi to universities, schools, research groups and businesses across the EU and the DACH region. Robots Europa prepares each quotation, arranges delivery and provides support after the arm is in use, so a lab or classroom deals with one European point of contact from first enquiry to first program.

Background

Elephant Robotics and the myCobot lineage

Elephant Robotics is best known for compact desktop arms, above all the myCobot family, which has become a common sight in teaching labs and maker spaces. The myArm line extends that work rather than replacing it: the myArm robot is designed to be 100% compatible with myCobot accessories, covering both structural installation and software control. For an institution that already owns grippers, suction pumps or mounts from the myCobot range, this means existing kit carries over, and teaching material written for one platform needs less rework for the other. Further arms from the same manufacturer are grouped in our Elephant range.

Seven axes and an onboard computer

Two design decisions define the myArm 300 Pi. The first is the joint count: seven high-precision, all-metal magnetic encoder motors are housed in a very small space, giving the arm a structural complexity comparable to industrial products. The second is the controller. Instead of relying on a separate PC, the arm carries a Raspberry Pi 4B with 4 GB of memory, running Ubuntu Mate 20.04 with ROS1, ROS2 and Python built in, supported by two ESP32 auxiliary controllers. The arm is therefore a self-contained Linux computer with a manipulator attached, reachable over Ethernet or WLAN and expandable through its USB ports and the M5stack ecosystem.

Technical Specifications

Specifications are as published by the manufacturer and are confirmed against the datasheet at quotation.

The manufacturer has not published the dimensions, IP rating, operating temperature, joint speed, joint rotation ranges, package contents or power consumption; these are confirmed with you at quotation.

Why does a seventh axis matter on a desktop arm?

A six-axis arm can, in principle, place its end effector at any position and orientation within its workspace, but usually with only a small number of joint configurations to choose from. Add a seventh joint and the arm gains redundancy: the same hand pose can be reached with the elbow in different positions. That opens up the topics that make redundant manipulators interesting in research, such as null-space motion, obstacle avoidance while holding a pose, joint-limit avoidance and more human-like motion planning.

On the myArm 300 Pi these concepts can be explored at small scale. With a maximum working radius of 300 mm and a maximum load of 200 g, it is not a production tool, and it is not meant to be. Its value lies in letting a student or researcher write a redundancy-resolution algorithm in Python or ROS, run it on real hardware with ± 0.5 mm repeatability, and observe the result on the bench. At 1.5 KG, the arm can be carried between rooms and set up again in minutes, which matters when a single unit serves several courses.

Does the myArm 300 Pi need a separate computer?

No. The Raspberry Pi 4B on board, with its Broadcom BCM2711 64-bit quad-core processor and 4 GB of LPDDR4 memory, runs Ubuntu Mate 20.04 with ROS1, ROS2 and Python already installed. With a display connected to one of the two microHDMI outputs and a keyboard and mouse on the USB ports, the arm works as a desktop Linux machine in its own right. Users who prefer to work remotely can reach it over Ethernet or WLAN.

Having both ROS1 and ROS2 available matters in practice. Many existing tutorials and research packages still target ROS1, while new projects increasingly start on ROS2; with both built in, a course can teach either without reflashing the system. For beginners, myBlockly offers graphical block programming, so the same arm can serve a first lesson in sequencing and a final-year project in motion planning. The two ESP32 auxiliary controllers and M5stack compatibility, with PWM and IO for PWM motors, infrared sensors and other M5stack hardware, give room to build simple cells around the arm. Vision is an add-on: the arm does not have a camera, but it accepts any USB interface camera.

Who is the myArm 300 Pi for?

The clearest fit is higher education. Robotics, mechatronics and computer science departments teaching kinematics, ROS or motion planning gain a redundant arm that is small enough for a teaching bench and self-contained enough that each workstation needs no extra PC. Research groups working on redundant manipulation, human–robot interaction or imitation learning can use it as an affordable test platform before moving algorithms to larger hardware.

Secondary schools and technical colleges benefit from the myBlockly environment, which lets pupils start with graphical blocks and move to Python on the same machine. Makers and developers will appreciate the open Linux environment, the USB expansion and the M5stack ecosystem. Owners of myCobot arms are a natural audience too, since the accessories they already have remain usable.

Buyers whose tasks call for a different form factor can compare other members of the family, such as the Elephant Robotics Technology Myarm C650 (4011200002) and the Elephant Robotics Technology Myarm M750 (4011200003); their specifications are listed on their own pages. The wider selection is available in our Robot Arms category.

What is the myArm 300 Pi used for?

1. Teaching kinematics: forward and inverse kinematics on a seven-joint arm that students can see and touch.
2. ROS and ROS2 training: hands-on exercises with both frameworks on a single preinstalled system.
3. Redundancy research: testing null-space control and obstacle-aware motion planning on real hardware.
4. Vision experiments: pairing the arm with a USB camera for object detection and pick-and-place studies.
5. Block-based programming lessons: introducing robot logic to beginners through myBlockly.
6. Prototyping with sensors: combining the arm with M5stack hardware, infrared sensors and PWM motors for small demonstrators.

Pricing and Availability

Robots Europa supplies the myArm 300 Pi on quotation, so that each offer reflects your configuration, quantity and destination within the EU or the DACH region. Delivery, customs and support are arranged together with the quotation. If you are equipping a teaching lab with several units or need accessories from the myCobot range alongside the arm, include this in your enquiry and we will cover it in one offer. Your personal quotation is available on this page.

Frequently Asked Questions

How many degrees of freedom does the myArm 300 Pi have?

The arm has 7 degrees of freedom, driven by seven high-precision all-metal magnetic encoder motors.

Which controller does the arm use?

The main control board is a Raspberry Pi 4B with 4 GB of memory, based on a Broadcom BCM2711 64-bit 1.5GHz quad-core processor, supported by two ESP32 auxiliary controllers.

Which software is preinstalled?

The arm runs Ubuntu Mate 20.04 with ROS1, ROS2 and Python built in, as well as myBlockly for graphical programming.

Is a camera included?

No, the robotic arm does not have a camera. Any USB interface camera can be added as an option.

Can I use my existing myCobot accessories?

Yes. The myArm is designed to be 100% compatible with myCobot accessories, both in structural installation and in software control.

What can the arm lift and how far does it reach?

The maximum load is 200 g and the maximum working radius is 300 mm, with a repeatability of ± 0.5 mm.

Where can I buy the Elephant Robotics Technology Myarm 300 PI 2023 (4011200001) and what does it cost?

You can buy it from Robots Europa, which supplies customers across the EU and the DACH region. The cost depends on your configuration and destination, so please request a quotation on this page.

Summary

The seventh joint that lets a human arm reach around an obstacle is the reason redundant robots exist, and the myArm 300 Pi brings that idea down to bench scale. Seven encoder motors, an onboard Raspberry Pi 4B with ROS1, ROS2, Python and myBlockly, compatibility with myCobot accessories and the M5stack ecosystem make it a self-contained platform for teaching and researching redundant motion. It is modest in reach and payload by design, and generous in what it lets people learn. Robots Europa quotes, delivers and supports it across the EU and the DACH region; for your quotation, this page is the starting point.