A 4-axis robotic arm ideal for education | myPalletizer - Hackster.io
myPalletizer 4 Axis Robot Arm Available in M5 Stack & Raspberry Pi 4 M – Elephant Robotics
4-Axis SCARA Robots by Robotic Automation Systems
Peer-review under Responsibility of Daaam International Vienna 25th Daaam International Symposium on Intelligent Manufacturing and Automation, Daaam 2014 New Concept for Design and Control of 4 Axis Robot Using the Additive Manufacturing