Thursday, July 28, 2011

IR Controlled Car



Today I want to talk a little about DC motors. DC motors are a simple way to make objects move such as robots. One draw back of the DC motor is that it takes a lot of power to run. Meaning it takes a lot of energy to get it running at all. So if I wanted to make a robot that was battery powered I would somehow need to make these DC motors efficient. A really practical DC motor that a lot of people use when efficiency is needed is the solar DC motor. This motor runs fine with much less power than the standard current hogging motor. In my case I realized I needed a solar DC motor if I was to pull off a robot that lasted for a relatively long time.
Now after I had decided on my right motor I could get to the IR remote control part. The last couple blogs I talked about IR signals and what you could use them for. In this segment I want to use IR signals to control the direction of a robot. So say for instance if I pressed the up button on the remote control the controller would send a specific frequency that would turn on the motors to go forward. The brain of the robot would receive specific signals from the remote and act accordingly. So in this case my remote should have four different signals, each representing a command for the robot to go forward, backward, left or right. From this standpoint I could easily make an remote controlled car with four different oscillator signals and a robot that interpreted four different IR signals. What a cool idea!

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