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  • Neural networks control a toy car

    After taking the Stanford Machine Learning class offered over the Internet last year, [David Singleton] thought he could build something really cool. We have to admit that he nailed it with his neural network controlled car. There’s not much to the build; it’s just an Android phone, an Arduino and a toy car. The machine learning part of this build really makes it special.

    A neural network takes a whole bunch of inputs and represents them as a node in a network. Each node in [Davids]‘s input layer corresponds to a pixel retrieved from his phone’s camera. All the inputs of the input layer are connected to 64 nodes in the ‘hidden layer’. The nodes in the hidden layer are connected to the four output nodes, namely left, right, forward and reverse.

    After training the network and weighting all the connections, [David] got a toy car to drive around a track. Weird, but it works.¬†All the code is up on github, so feel free to take a look behind the inner machinations of a neural net. Of course, you could check out the video of [David]‘s car in action after the break.

    EDIT: We originally credited [icebrain] as the author. Our bad, and we hope [David] doesn’t hate us now.


    Filed under: robots hacks, Software Development


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