Rotrics DexArm is a multifunctional desktop robotic arm with 4 axes and a modular design, specially developed for STEAM educational projects, makers, and designers. The Maker Kit variant includes the main modules for drawing/writing, laser engraving, and 3D printing.

Rotrics DexArm utilizes a patented modular system that allows changing the working heads (end-effectors) with a single click, without screws or complicated cables. Thanks to high-precision reducers, the arm reduces backlash between gears, offering an excellent repeatability of 0.05 mm. It can be programmed both through a visual block-based interface (Scratch) and through advanced languages (C/C++, Python, Java, JavaScript) or ROS.

General Technical Specifications

Number of axes: 4

Position repeatability: 0.05 mm

Accuracy: 0.1 mm (100 microns)

Maximum payload: 500 g

Maximum moving speed: 500 mm/s

Maximum reach: 380 mm

Arm dimensions: 175 x 128 x 315 mm

Arm weight: 2.4 kg

Noise level: 40 dB

Connectivity: Wi-Fi, 2 x USB-C, 12-pin external port for motors, 5-pin port for modules

Power supply: DC 12V / 7A (Compatible source 100-240V)

Operating temperature: 0 degrees C - 50 degrees C

Axis Working Range & Speed

Base (Joint 1): ± 110 degrees | Maximum speed: 100 degrees/s

Joint 1 (Joint 2): 0 degrees - 110 degrees | Maximum speed: 100 degrees/s

Joint 2 (Joint 3): 0 degrees - 85 degrees | Maximum speed: 100 degrees/s

Head rotation joint (Joint 4): ± 360 degrees | Maximum speed: 100 degrees/s

Specifications of Modules Included

1. 3D Printing Module

Build volume: Irregular shape, larger than 220 x 155 x 160 mm

Layer Resolution: 0.1 - 0.3 mm

Nozzle diameter: 0.4 mm

Maximum nozzle temperature: 250 degrees C

Supported materials: PLA, TPU, Wood, Carbon Fiber, ABS, PETG (with the mention that the recommended standard filament is 1.75mm PLA)

Compatible slicing software: Rotrics Studio, Cura, Simplify3D (S3r)

File formats: STL, OBJ

2. Laser Engraving Module

Working area: Larger than 210 x 297 mm (A4 format)

Laser power: 2500 mW (2.5W)

Wavelength: 405 nm

Safety class: Class 4

Compatible materials: Wood, bamboo, leather, textile materials, paper, cardboard, non-transparent acrylic, anodized aluminum

Unsupported materials: Steel, copper, glass, transparent or reflective materials

File formats: SVG, JPEG, PNG etc.

3. Pen Holder Module (Plotter)

Function: Drawing, writing, sketching

Working area: Larger than 210 x 297 mm

File formats: SVG, JPEG, PNG

Control Screen

Type: 3.5 inch color touchscreen

Function: Offline control, status visualization, and running direct commands

Software and Programming

Official software: Rotrics Studio (includes dedicated functions for drawing, laser, 3D print, and Teach & Play)

Supported operating systems: Windows 7 or newer, macOS X or newer

Educational programming environment: Scratch (visual programming through blocks)

API & Language Support: C/C++, Python, Java, JavaScript, Swift etc.

Robotic platform support: ROS / ROS 2.0

Package Content

1 x Rotrics DexArm robotic arm

1 x Pen Holder module

1 x Laser engraving module (2.5W)

1 x 3D printing module (includes extruder, hotend, filament holder, guide tube, and printing plate)

1 x 3.5 inch touch screen

Power supply and connection cables (Type-C)

Material samples (PLA filament, wood pieces, stickers for printing)