- Im just finished drawing my next 3d printed chassis for the up side, and will give HAR an extra feature. I have a lot of upgrade plan, such as giving my HAR an ultrasonic sensor to measure the distance of some object in front of him, so the operator can move to another direction, in case there's something dangerous object when HAR used to help a victim in certain area caused by an earthquake. Stay tuned for the next upgrade.
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