A Typical Interface

There are different types and makes of interface but they are all used to convert a program so that a robotic device can be controlled. Interfaces come in different shapes and sizes. Some connect to IBM computers other to Acorn or Mac computers but they all do the same job.


COMPUTER The computer is connected to the interface. The program is written on the computer and this controls the robot - through the interface.	INTERFACE The interface converts the program into movement of the robot. A robot cannot be connected straight to a computer.		ROBOT A robot is usually made up of motors and sensors. It is always connected to an interface which converts the program into instructions for switching on and off each motor and sensor.



		THE SMART BOX A ‘Smart Box’ is a common interface and they can be connected to most types of computer. It is possible to connect up to four motors and a range of devices such as temperature sensors, movement sensors and light sensors etc.... These are known as analogue sensors. Digital outputs are items such as speakers, lights, buzzers, LEDs and circuits etc.... Digital inputs are devices such as micro-switches and relays. They are either ‘on’ or ‘off’.

Explain why it is necessary to connect an interface to a computer if you are trying to control a robotic device.

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