The AR4 6-axis robot arm is an open-source industrial-grade platform that fits your budget and requirements perfectly, with a total build cost of just over $2000 USD. Here’s what makes it ideal for builders, educators, and developers:

Key Specifications

• Degrees of Freedom: 6-axis
• Reach: 24.75″ (629 mm)
• Payload: 4.15 lb (1.9 kg)
• Repeatability: ±0.2 mm
• Control: Python, ROS, Modbus, G-code
• Build Options: Machined aluminum or 3D-printed frames

Pricing Breakdown

You’ll need four component groups to build the AR4:

1. AR4 Combo Kit ($1329)
   • Includes all aluminum parts, bearings, belts, hardware, and electronics (except motors).
   • 🔗 Buy AR4 Combo Kit
2. Stepper Motors & Drivers ($760)
   • Sourced factory-direct from StepperOnline for lowest cost.
   • 🔗 Motor/Driver Package
3. 3D-Printed Parts
   • Print covers/spacers yourself.
4. Gripper (optional)
   • Add a servo or pneumatic gripper kit.
   • 🔗 Pneumatic Gripper Parts Kit
   • 🔗 Servo Gripper Parts kit

Free Resources

• Software & manuals: Download here
• Build tutorials: Watch here
• Active community forum: Get support and share ideas

Ideal For

• Prototyping & light industrial automation
• Custom R&D and integration projects
• Education & STEM training

If you have any questions please reach out to us!