Building and programming your own robots are great ways to learn new skills. You don’t have to spend a fortune to build your own app controlled robot. manic-3d-print has shared a guide that lets you know what it takes to make a 8 DOF 3D printed quadruped robot.
You are going to need a HuaDuino board, 8 x Tower Pro SG90 servos, Bluetooth module, and a single 3.7V 18650 lithium ion battery to complete this. The robot can move randomly or be controlled using an iOS or Android smartphone.
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