Robocar Obstacle Sensor using 89c51

(10 customer reviews)


SKU: IQ-52 Category:

Available Options:



A robot can be defined as an electro-mechanical system with the capability of sensing its environment, manipulating it and acting according to the preprogrammed sequence. It is a machine that appears intelligent due to the

instructions it receives from a computer inside it which handles multiple

tasks. This article features a car robot, RoboCar which uses a microcontroller

to detect obstacles and manipulate its direction as per the inputs from

three infra-red (IR) sensors mounted in front of the car. The heart of the system is a microcontroller—Atmel AT89C52. It is programmed to accept inputs from its port p0 to sense the obstacles around it and control the steering to avoid any collision. There are three TSOP1738 IR sensors (Q1, Q2 and Q3) used in this project—one at the centre and theremaining two on the left and right

to detect obstructions, if any, in front of the Robocar In case of an obstacle, or a potential collision, the microcontroller controls the steering through a bipolar stepper motor which sensor TSOP1738 operates at a frequency of 38 kHz. NE555 timer IC is used for generating a pulse of 38 kHz and transmitted through IR LEDs. There are five IR LEDs—two each on the

left and right and one on the front of the robot. The reflected IR that beams

from the obstacles are received by the sensors and sent to the microcontroller. The microcontroller is programmed in such a way that it takes the decision and changes the path of the robot as per the sensors’ inputs to avoid the obstacles.

Additional information

Weight N/A
Project kit

Professional, Assembled, Combo, Learning

10 reviews for Robocar Obstacle Sensor using 89c51

  1. Debt Relief

    Sorry for my bad english. Thank you so much for your good post. Your post helped me in my college assignment, If you can provide me more details please email me.

    • Author


  2. Deepak

    where we find these projects programming. If you have its programming please help me.

  3. kangatharan

    i am studing final year BE(eee).my team is undertaken a AT89c52 based robocar project. its collected from EFY.we r designed a new same pcp but willnt tested.can u tell details(effeciency,IR detection lenth) about that robocar.

  4. S.Palaninath

    i am doing my final year.B.E(EEE).i want the projct papers so pls snd to mail id…………

  5. Gracyn

    Thanks for wtriing such an easy-to-understand article on this topic.

  6. google

    I liked your article is an interesting technology
    thanks to google I found you

  7. jigar

    Require program for RobocarObstacleSensorusing89c51 please help me.


      i am send you pdf having code and circuit both

  8. ravi

    i want to make this project so please help me …
    i want material of this project like photos,working,programming,etc..


      i had mail you

  9. palani

    i want to make this project for my final year please help me …


      What’s problem. ?

  10. nikol

    very good staring Mechanism with steeper motor i like it.

Add a review

Your email address will not be published. Required fields are marked *