An obstacle avoiding robot or a car is a device in motion that avoids colliding with an obstacle either by taking a turn or by stopping at the obstacle. This prevents the robots cause damage and casualties.
Which sensor to use to make obstacle avoiding car?
Just to talk the general practice, an obstacle avoider robot can be made using either of these sensors.
IR sensor – Infrared sensor
Both of them work on different principles and the output of ultrasonic sensors would be more accurate in the real world.
There are two different functions an obstacle avoiding robot can perform.
Stop the car if it detects an obstacle: The car or robot will stop and stand still at the obstacle. It will continue moving forward if the obstacle is removed, or if you change the direction of the car, towards a clear way ahead.
Take a turn if the robot detects an obstacle: The robot will take a turn when it sees the object, to avoid a collision, and will continue moving in that direction until it sees another obstacle which makes it change the direction again.
Circuit for obstacle avoider that stops at an object
Place the circuit on the robot using DST or elements hooks (if you are making it with the DIY robotic toy car) and connect the motors.
Step 3: Tune the IR Element
Use the potentiometer to set the range of the IR element. Set the potentiometer so it detects the adequate distance. Keeping the sensitivity high should help as it will detect the obstacle at distance and will prevent a collision.
Step 4: Execute your project
The obstacle here can be any object like a wall, human, pets, books, or any other physical object that comes into the sight of the IR Element.
How the obstacle avoiding car works
Case of a robot that stops at an obstacle.
The Flip element between IR and motors will make the motors run in case there is no obstacle. So when the IR detects the object, the Flip will send a no command and the motors will stop rotating. That makes the robot stop.
Case of robot that takes a turn at the obstacle.
Here one of the motors is out of IR control and which will continue rotating, irrespective of the presence of an obstacle. But another motor, under the control of IR and flip, will stop at an obstacle. That makes the car take a turn.
Applications of obstacle avoiding robots.
For a smart autonomous car, obstacle avoidance is the top most feature to keep the passenger safe.
The same is the case for robots.
Avoiding obstacles is the most important and common feature of all the smart cars and robots that are in motion.
Now try building one and experience it yourself.
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