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I've just got my RPI and im aiming to use it as a server (forwarding sent chars from android device over wifi to arduino) any ideas how can this work(or at least a part of it)?

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You can setup a node.js server (TCP or HTTP) to capture input from your Android over wifi to a serial port where the Arduino is connected.

If your RPi and Arduino are not connected with a cable, you can use BT modules to connect them.

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  • thanks for the quick answer but by using node.js server can i send back data such as video stream from a connected cam to RPI to the android device?
    – DieDen
    Dec 27, 2013 at 19:07
  • I'm sure there's a way to do it, but I'd suggest you go with another solution that fits your application better. Try taking a look at motion, it allows you to stream video from a camera attached to the RPi: linux.die.net/man/1/motion
    – Jervelund
    Dec 27, 2013 at 23:54

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