Old Pueblo Engineering Center
Founded 2006 in Tucson, AZ. to explore Human/Robot Interactivity
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Ready-2-Play Robotics
5t4nd1ng @ th3 3dg3 0f 5p3ct4t10n!

Give a child a toy and they're happy for an hour.
Teach a child how to make their own toys, and they're happy for life!

L293D Motor Driver/H-Bridge

L293D is a typical Motor driver or Motor Driver IC which allows DC motor to drive on either direction. L293D is a 16-pin IC which can control a set of two DC motors simultaneously in any direction. It means that you can control two DC motor with a single L293D IC. Dual H-bridge Motor Driver integrated circuit (IC). Source: Rakeshmondal.info

D.C. Motor

A DC motor is any of a class of rotary electrical machines that converts direct current electrical energy into mechanical energy. The most common types rely on the forces produced by magnetic fields. Source: Wiki

Voltage Specification

VCC is the voltage that it needs for its own internal operation 5v; L293D will not use this voltage for driving the motor. For driving the motors it has a separate provision to provide motor supply VSS (V supply). L293d will use this to drive the motor. It means if you want to operate a motor at 9V then you need to provide a Supply of 9V across VSS Motor supply.

The maximum voltage for VSS motor supply is 36V. It can supply a max current of 600mA per channel.Since it can drive motors Up to 36v hence you can drive pretty big motors with this l293d.

VCC pin 16 is the voltage for its own internal Operation. The maximum voltage ranges from 5v and upto 36v.
Source: Rakeshmondal.info

Depending on the funding available build an autonomous car

Have the students modify a cheap R/C car to drive specific routines such as a one meter square, or a one meter triangle. Having the experiences with the IR and UltraSonic sensors they might build a car that can avoid collisions combining lessons into bigger programs.

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