toy car design - avoiding obstacles

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hi everyone

if anyone can help me witth this i wld be very greatful
i need to make a toy car that move in a straight line and turns when it is about to hit an obstacle.
i dont know what to use to make the wheels turn.
i dont know what to use to sense the obstacle

every1 can give their suggestion
 

Re: hi everyone

for that u have to use Infrared sensors or ultrasonic sensors + microcontroller,
but if u want to keep it simple just use few couple of switches at the edges of the Toy car
 

Re: hi everyone

you need a small DC motor, with a driver or not. Sensing may be an infred transmitter and detector.

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low-cost resistor, capacitors, and LEDs for hobbyists:
**broken link removed**
 

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