Cost-effective 4-DOF educational desktop robot ZK-bot401ed. Built with STM32 control, 0.5kg payload, 24V 4DI/4DO, and integrated kinematics for STEM laboratories.
Payload
0.5 KG
Reach
340mm
Repeatability
±1mm
End Speed
-
Cost-Effective 4-DOF Training Manipulator Powered by Embedded STM32 Architecture for Automation and Electronics Education
The ZK-bot401ed is an entry-level 4-axis desktop educational robot designed specifically for vocational institutions, technical colleges, and maker innovation spaces. Featuring 4 degrees of freedom (4-DOF) and a 0.5 kg rated payload, the system incorporates a 4th rotational axis (150°/s) to accommodate end-of-arm orientation and angular adjustments. Driven by NEMA 17 stepper motors and precision all-metal spur gearboxes, the platform is controlled by an embedded STM32 mainboard and supports dual operation via an included 4-inch serial touchscreen teach pendant and PC host software. With onboard Point-to-Point (PTP), linear interpolation, linear offset, and palletizing algorithms—along with standard 24V 4DI / 4DO digital I/O and wireless connectivity—the ZK-bot401ed provides a highly accessible, cost-effective entry point for mastering embedded electronics, manipulator kinematics, and PLC cell integration.
Transparent Control Framework: Powered by a standard STM32 microcontroller platform with structured control logic and transparent communication registers. Highly suitable for academic programs focusing on embedded systems, microcontroller programming, motion control algorithms, and host communication protocols.
End-of-Arm Orientation Flexibility: The 4th rotational axis delivers dedicated wrist orientation (Yaw control), allowing integration with pneumatic suction cups, mechanical grippers, and plotting pens. Enables diverse lab experiments including automated trajectory drawing, simulated assembly alignment, and vision-guided rotary sorting.
Intuitive Programming Workflow: Equipped with a 4-inch serial touchscreen teach pendant for direct manual jogging and point recording, while fully compatible with PC host software for multi-axis path simulation, script execution, and classroom demonstrations.
Dual Coordinate Systems & Embedded Algorithms: Allows seamless switching between Joint and World (Cartesian) coordinate systems, supported by embedded motion routines for Point-to-Point (PTP), linear interpolation, path offsetting, and multi-tier palletizing.
Industrial-Standard Interfacing: Outfitted with a 24V/0V digital logic interface (4 inputs / 4 outputs), USB serial, and Bluetooth ports. Enables direct hardware interlocking and signal handshaking with external sensors, tabletop conveyors, and mainstream industrial PLCs (including Siemens and Mitsubishi controllers).
Plug-and-Play Benchtop Deployment: Weighing only 6.0 kg with an ultra-low maximum power draw of 50 W, the robot is built for rapid, space-efficient deployment across high-density student laboratory benches.
| Specification Category | Technical Parameters |
| Product Model | ZK-bot401ed (4-Axis STM32 Educational Desktop Robot - Basic Edition) |
| Degrees of Freedom (DOF) | 4-DOF (4 Axes: 3-Axis Articulated Body + 1-Axis Rotary Wrist) |
| Rated Payload | 0.5 kg |
| Pose Repeatability | ±1.0 mm |
| Working Radius (Reach) | 340 mm |
| Max Joint Speed | Axis 1 (Base): 120°/s Axis 2 (Shoulder): 120°/s Axis 3 (Elbow): 120°/s Axis 4 (Wrist): 150°/s |
| Joint Motion Range | Axis 1 (Base): -160° to +160° Axis 2 (Shoulder): -100° to 0° Axis 3 (Elbow): -115° to 0° Axis 4 (Wrist): 0° to 270° [Pending Verification] |
| Actuation & Powertrain | NEMA 17 Stepper Motors + Precision Spur Gearboxes |
| Controller Architecture | Embedded STM32 Microcontroller Architecture |
| Control Methods & Display | 4-Inch Serial Touchscreen Teach Pendant + PC Host Software Programming |
| Motion Planning & Algorithms | Point-to-Point (PTP), Linear Interpolation, Linear Offset, Palletizing Function |
| Coordinate Systems | Joint Coordinate System, World Coordinate System (Cartesian) |
| Industrial I/O & Connectivity | 24V/0V Digital I/O (4x DI, 4x DO), USB Serial Port, Bluetooth Interface |
| Electrical Specifications | Input Voltage: AC 110V / 220V | Max Power Consumption: 50 W |
| Environmental & Physical Specs | Operating Temperature: -10°C to 50°C | Net Weight: 6.0 kg |
| Mounting Configurations | Desktop / Floor Mounting |
1x Robotic Arm Body (ZK-bot401ed)
1x Integrated Control Box
1x 4-Inch Serial Touchscreen Teach Pendant
Engineered for foundational engineering laboratories across Robotics, Automation, Mechatronics, and Electronic Information programs. Serves as a standard hands-on hardware platform for STM32 embedded systems and multi-axis manipulator kinematics coursework.
Utilizes 24V 4DI / 4DO digital terminals and open serial communication to interface seamlessly with industrial PLCs (e.g., Siemens, Mitsubishi) as well as microcontroller evaluation boards (STM32, Arduino, ESP32) for sequence triggering and I/O interlocking.
Acts as an adaptable benchtop motion unit for engineering capstone projects, automated vector plotting, chess-playing simulation, vision-guided sorting, and multi-tier palletizing competitions.
Provides an accessible, transparent hardware testbed for validating STM32 motion control algorithms, serial protocol parsing, host GUI development, and serial manipulator coordinate transformations.
Introduces foundational robotic kinematics and embedded motion control via PC host software and the dedicated teach pendant. Students practice coordinate frame transformations between Joint and World (Cartesian) spaces, singularity analysis, and multi-axis trajectory execution.
Focuses on hardware-level signal interfacing using the 24V 4DI / 4DO terminal block. Covers trigger signal acquisition, operational status feedback, and sequence handshaking between the robotic arm and external PLCs or microcontroller testbenches.
Applies built-in linear interpolation and palletizing algorithms to conduct 2D planar vector path tracking, surface contouring, and 3D array stacking routines, reinforcing industrial pick-and-place logic without complex per-point manual teaching.
Guides students through data parsing, custom serial command packet creation, and bidirectional telemetry over USB Virtual COM or Bluetooth. Enables development of custom host GUIs and mobile interfaces for real-time remote teleoperation.
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