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PC Serial Peripheral Design (1)

Introduction, course hardware, first program

PC Serial Peripheral Design (1)
At one time or another many readers may have thought about controlling or monitoring equipment using their PC. Electronics projects using a PC need not be lavish or expensive: often the interfaces provided on the PC can be used directly. In this series of articles we present a range of projects using the serial (RS232) port, controlled using simple programs written in Visual Basic.Why have we chosen to use the serial port, when it is more complicated and offers fewer connections than the printer port? For a beginners’ course using the serial port has several advantages:- The serial port is well protected against accidental damage. Cables can safely be plugged in while the computer is on.- There is usually a spare serial port which can be used for experiments.- The serial port can deliver enough current to power a wide range of projects, and so a separate power supply is not required.
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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor Members can exclusively download these files for free as part of their Membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service. Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.

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