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Appendix 3 / Making your own sensors •

user’s manual

manual ©eowave/Ircam 2003

3 - Making my own sensors

eo•body supports many kind of sensors. Most common sensors are switches and poten-

tiometers, but there are many other kinds of sensors.

Making my own sensor switch

Sensors need a minimum of two cables: ground and signal. When 5 V is connected to the

signal - when using switches for example - it may create an antenna effect generating unde-

sirabled distorsion. This is the reason why the signal must be connected to the ground.

Making my own sensor potentiometer

To use a standard potentiometer with eo•body, connect both outputs of the potentiometer

resistor to the ground and 5 V. Connect the variable output of the potentiometer to the signal

input.

Making my own sensor with other kinds of sensors

Some sensors like distance sensors need an extra power supply. eo•body delivers +5V and

+9V to power these sensors up to 250 mA. When the total consumption from all the sensors

plugged to eo•body is higher than 250 mA, an additional external power supply is necessary.

(to avoid antenna effect

when the switch is off)

3-5 Kohm

ground

+ 5V Signal

Switch

+ 5V ground

Signal

Sensor

Potentiometer

+ 5V or + 9V

Signalground

ground

Coming from eo•body or external

power supply (any other voltage has to

come from an external power supply)

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Eowave Eobody1 Bedienungsanleitung Seite 24