SCARA Robot Arm

SCARA: Selective Compliance Assembly Robot Arm

This sounds like someone trying to use big words to describe an object that is obviously a robot arm, but there was actually a consortium of 13 Japanese companies with sole purpose to improve on robots at the time (1977) and do research. Go here for more information: What is a SCARA robot?

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This is another How-to-Mechatronics project, the same people who provided the Perseverance project files. Their website: How-To-Mechatronics