PJBot_V3

This is PJBot version 3.
The brain of this Bug is an Arduino. Now, it only go rolling and  avoiding obstacles that it detects with 2 led's and 1 IR receptor.

For now it have:

    * Base - made with the plastic box of a roller blind
    * Arduino
    * Proximity sensor - 2 IR LEDs and an IR receiver
    * Driver for motor
    * 2 DC Motors
    * 2 wheels - made of bottles and fish food caps, and hot glue
    * 2 collision sensors - which are not connected


Ideas:

    * Use an I / O expander  controlled by I2C to connect the sensors and driver
    * Install a RF12  transceiver
    * Install an LCD also controlled by I2C
    * Install a wireless camera
    * Thinking of a way to use a old mouse to learn the speed and direction.
    * ...


The code still has some problems and need some improvements.

I am waiting for your reviews and comments.