tailieunhanh - How to Interface a Microchip PIC MCU with a hobby R/C Servo

Hobby grade servo motors can be used with success in several different robotic applications. They have a very simple electrical interface and are available in a great assortment of specifications and prices. Usually one can get started with a very cheap one. This paper will demonstrate how to control one of these servos using a PC and a Microchip PIC microcontroller. | How to Interface a Microchip PIC MCU with a hobby R C Servo Paulo E. Merloti padu@ Department of Computer Science Abstract. Hobby grade servo motors can be used with success in several different robotic applications. They have a very simple electrical interface and are available in a great assortment of specifications and prices. Usually one can get started with a very cheap one. This paper will demonstrate how to control one of these servos using a PC and a Microchip PIC microcontroller. 1 Introduction People are used to do all sorts of stuff using their computers they write letters send e-mails play games and so on. Usually all these activities are bounded by the virtual world. Everything happens inside the computer and results are presented in standard ways through a screen or in paper through a printer. People don t usually expect to control real world objects using the computer and still these days there is an aura of mystery when one sees such interaction. Unavoidably interfacing between virtual world and real world must be accomplished by some peripheral that translates digital information into motion. An inkjet printer transforms a digital document into a series of movements of a mechanical arm with two degrees of freedom including the angular motion of the cylinder that makes the sheet of paper roll and controls rapid release of ink to produce a copy of that digital document on a sheet of paper. But printing a document is nothing new to us and doesn t draw uh s and oh s anymore. In the other hand if you tell your friend that your computer is the one that controls the lights of your home or turning your AC on and off your house will pretty soon be called the house of the future . Transforming digital information into kinesthetic information is mainly performed by motors. At one time these motors were pretty hard to control expensive and not at everybody s reach. R C servos are very attractive because they are offered in many specifications of .

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