Sonar

Description

The sonar sends out a sound wave 10 or 30 times a second. The frequency is determined by a switch on the sonar’s housing. The time required by the sound wave to cover the distance between an object and the sonar is used to calculate that distance. The sonar functions properly if used within a range of 0.5 to 10 meters.

Use: The sonar lets you measure velocities, accelerations, displacements and distances.

Technical specifications

Usable distance    balle_verte.gif (257 bytes) 0.5 m to 10 m
Precision    balle_verte.gif (257 bytes) 1 mm
Recording speed    balle_verte.gif (257 bytes) 10 or 30 times a second
Wave frequency    balle_verte.gif (257 bytes) 40 kHz
Angle of projection    balle_verte.gif (257 bytes) 20°

Components included in the sensor kit

A sonar sensor kit includes all hard to find pieces needed for it's assembly :

hard to find: terminals, wiring cable, resistors, capacitors, diodes, switch
printed circuit board
hard to find integrated circuits
sonar transducer
plastic box, screw

Prices:

Sonar sensor kit : 45 $ (can)   33 $ (us)*

Schematic and assembly plan: 7 $ (can)   5 $ (us)*

* Plus taxes, shipping and handling

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