Annin AR4 robot arm guide
The AR4 is a 6-axis DIY robot arm from Annin Robotics in the USA, sold as kits you build yourself.
Updated November 2, 2026
AR4 products
- AR4 MK5 combo kit
Annin Robotics · USA
From $1,189 · Buy now
The complete AR4 kit. Aluminum, hardware, and the primary electrical parts.
AR4 MK5 CAD models (SolidWorks & STEP files)Annin Robotics · USA
$99 · Buy now
Every AR4 MK5 part in SolidWorks and STEP, plus the full robot assembly. $99 from Annin Robotics.
Frequently asked questions
- Is the AR4 a kit?
- Yes. You assemble it, which is why makers and schools use it to learn how arms work.