This Robotic Arm Trainer teaches basic robotic sensing and locomotion principles while testing your motor skills as you build and control the arm! You can command the unit with its 5 switch wired controllers (with lights) to grab, release, lift, lower, rotate wrist, and pivot sideways.
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I built 2 of these for a school I used to work at -and they were pretty cool – The kids loved em. There’s an I/O board to connect to a computer and you can programme it to follow a series of commands..