Intelligent Obstacle Avoiding Robot || Step by Step Tutorial || Arduino Project
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- Опубликовано: 4 фев 2023
- Hello friends,
In today's video I am going to show you how to make an intelligent obstacle avoiding robot. This is an Arduino project in which the obstacle avoiding robot detects the presence of obstacles using HC-SR04 ultrasonic sensor. The motors are driven by L298N driver board. The ultrasonic sensor is connected to an SG 90 servomotor to give the effect of an eye looking at both sides after detecting an obstacle, changing direction and then moving forward.
After detecting the obstacle, the robot stops , moves backward and changes direction and then goes further forward.
The links for purchasing the items are given below.
1. Arduino UNO board : amzn.eu/d/iH03OHj
2. L298N motor driver : amzn.eu/d/bzrLeMA
3. HC-SR04 Ultrasonic Sensor : amzn.eu/d/i5OkXM7
4. SG 90 Servo Motor : amzn.eu/d/9CQxkJa
5. Motors with wheels : amzn.eu/d/gGczeza
6. Battery pack : amzn.eu/d/j00LCqy
7. Jumper wires : amzn.eu/d/hQ1P7Mi
Link to download code: drive.google.com/file/d/11FJM...
OR
www.mediafire.com/file/l2p85r...
Link to circuit Diagram:
drive.google.com/file/d/1EpYa...
Please do watch the video .Thank you...
Please share the video if you like it.
You can watch the obstacle avoiding robot with advanced algorithm in the following link. It scans both left & right and choses direction without obstacle.
• How to make Obstacle ...
❤❤❤~~PLEASE SUBSCRIBE TO THE CHANNEL TO SEE MORE SUCH INTERESTING VIDEOS & MAKE LEARING SCIENCE FUN~~❤❤❤
#arduinoproject #scienceproject #arduino 
Наука
Obstacle avoiding robot with advanced algorithm by scanning both left & right
ruclips.net/video/k6W3FYxVS9E/видео.html
Obstacle Avoiding Robot with Bluetooth Control
ruclips.net/video/HbL9FB4Zogo/видео.html
That's fake it dose not scan left and write the servo is a dummy peice I read the program
Proof is that every time the robot senses something it turns only left
Try explaining it bro, the pinned comment is a lie
Hey friend. I think you have misunderstood. There is no fake or lie here in my channel. There are 2 videos.
1. Robot which doesnt scan left and right : ruclips.net/video/kPSBpfUpHt0/видео.htmlsi=909Kf0mK6tRViWnP .. In this project, the robot doesnt scan left and right. It just detects obstacle and always goes in the left direction only. Servo is obviously a dummy piece.
2. The robot which scans both left and right is in this link : ruclips.net/video/k6W3FYxVS9E/видео.htmlsi=RMY3UKpk0egZfDg6 .. Here the robot scans both left and right and goest to whichever direction which doesnt have obstacle. This video is what I have given in the pinned comment as robot with advanced algorithm.
@user-vq9md7xh3f Please reply if you have further doubts. I will be happy to clarify.
I have finished uploading the code for the obstacle avoiding robot and finish all the wires, and everything works like it should no problem of any kind, I want to thank you so much , you are such an amazing teacher, my next project is the Bluetooth Control obstacle avoiding robot.
Thank you so much dear friend. Iam so happy that it worked for you..❤️🙂
Congrats for 2K subscribers 😍👌
Thank you...🥰💓
@@Science_4U_ i can't able to see Arduino code whose link you given in description so can you please send the code here
Thanks a lot brother😊 It worked properly. Previously I saw another youtuber video of making a obstacle robbot but it was not working then I saw your video and it worked. Thank you so much
6:40
Thank you so much dear friend for trying out this project by seeing my video. Glad that it worked for you..🙂
Bro i subscribe and like from 4 phone because your video is very amazing and your sound also 👌 ❤❤🎉😊😊
Thanks a lot dear friend. Words cannot express my thanks to you. Thank you so so much!!!..😀😀😀🥰🥰😍
After watching servel video we are finally able to run our car .
Thank you soo much for your tutorial.
Love from Nepal.🇳🇵
Wow!!! Glad to know that. After seeing your comment, I was actually preparing the circuit diagram for uploading.
I will upload the circuit diagram so that the viewers get better clarity and can easily assemble the circuit.
Very happy to know that my video helped you to run the car. Please ask any questions and I will be happy to help.
If you liked the video, please subscribe for watching my future videos. Also, please share this channel with your friends who will be interested. Thank you. ❤
And love from India too..💞😍
Thank you so much! We were able to create this as a project and its works well!
Ooh..great dear friend!!!.. So happy to hear that💓🙂
Hlo sir it is really working
I want to ask how was the code uploaded
Hi friend..The code can be uploaded by connecting to PC or laptop. Then open the code in IDE software and click on upload button. It will get uploaded to arduino..
You are a super comment reader you reply all the comments 😅😅
Hehe..Thank you. I am very happy to read and reply to all the comments..🙂
Bro thank you very much i have made it , it is working and the code is also perfect, once again thank you very much and i will ask you to pls start a project on drone.
Hi friend. Thank you for the nice words. I will surely start making drones👍
Wow qhat a auper peoject i like it super 👌 ❤❤❤😊😊😊🎉🎉
Thank you dear!!!🙂🙂❤️❤️❤️
Superb😊👌👌
Thank you...🥰☺️
thanks the code and the circiut is worked. thanks you are the best
Thank you dear friend..❤️🥰🙂
I successfully made this robot following your instructions, but one problem I have is the robot gets too close to the obstacles before realizing it has to redirect. I'll increase the distance number, will it still work? Wonderful instructions and I really appreciated the circuit diagram!
Hi dear friend.Thank you so much for the encouraging comment❤️🥰🙂. You can definitely increase the distance number to make the obstacle detection early.
@@Science_4U_ Thank you! I will try that tonight! 💙
Okay friend..🙂
Bro i like your video i maked it but it working thankyou so much bro you need to make so many things like yhis thankyou very much ❤❤❤😊😊
Thank you so much dear friend..🙂❤️
Thanks again and again ❤🎉🎉😊😊😊
I am subscribe your video and like
Iam doing comment in onether phone that phone is my mother's phone
@rahseedap8268 Thank you so much friend for liking and subscribing to my channel. If you like my channel, please share with your friends so that those who are interested can watch these videos. Thank you so much friend..❤️🙂
Thank you so much
Sir please make a project on night patrolling robot with path folloer and edge detection and abstacle detection
Can i use a battery box that only lets 2 batteries in. Or i will need more power. or just use the one your using.
Hi friend. You need at least 4 batteries if your are using AA batteries. that gives you 4 x 1.5 V = 6V input voltage. So if you are using AA 1.5V batteries, you need a holder with 4 batteries. Another better option is to use 2 x 18650, 3.7V batteries. If you use 18650 batteries, you have to use a holder with 2 nos. of 18650 batteries and it gives 7.4V output voltage.
Can I use a regular arduino uno board or does it have to have that black bar thing on it?
Regular arduino will work friend.
Excelente.
Thank you friend💓
wow, itu sangat keren, terimakasih sudah memberikan tutorial itu🎉❤❤
Terima kasih teman💓🥰🙂
I am using a single dc 9v battery but it is not functioning well so do you think I should just use the 4 AA battery? then will it work properly? the robot works when plugged into my pc but when unplugged the robot just stands still and the Arduino Uno light and all are working.
Hi friend.. It is definitely due to poor battery. When plugged into PC, the power to arduino board is taken from PC through USB. Hence the batteries are used to run the motors alone and it just rotates. But when PC is disconnected, the battery has to power both arduino and motor, which becomes difficult with bad batteries. Hence the motors dont rotate. If you start rotating the wheel, sometimes it will rotate..
So, the soluyion is to use new batteries. 9V small battery will work but will not last long. 4AA batteries will last longer. Best option is to use 2 x 18650 3.7V battery which are rechargeable also..
Ok thank you so much
thanks bro it works
Okay friend..great to know that. 🙂❤️
very good very nice
Thank you so much dear friend..🙂❤️
I did it. Thanks a lot. But i have question, how to change the code to adjust speed using pwm?
Hi friend. The Motor speed can be controlled using PWM by removing the 2 ENABLE jumpers at the motor control pins and giving a PWM signal in that pin. I will give below a link to a very detailed article on this. Please go through that and ask me if you have any further questions. I will be happy to help!!!
howtomechatronics.com/tutorials/arduino/arduino-dc-motor-control-tutorial-l298n-pwm-h-bridge/
Thanks for your video. May I ask whether how can I see the complete Arduino code you used in this project. Actually, you showed the code in this video but I paused video but the complete code was not displaying at the computer screen. How can I access the complete source code
Hello dear friend. For all the projects, the code can be downloaded from link given in the description box below the video..🙂
i also made a 0b avoiding car after learn from you.
Okay friend. That is great..!!!🙂❤️
My servo motor is working but the wheels are not working.......I have connected wires as shown in the circuit diagram. Please guide me
Hi friend. There could be many reasons why it is not starting. You have to check one by one to find out. The most common problem could be L298N motor driver board. Have you used it before or is it a new one? . It could be faulty.
Also, in the motor drive board, there should be 2 jumpers in place connecting ENA and ENB and the pins above them. that is for enabling rotating of the motor. If the jumpers are not there also, the car wont start.
Also, check whether the batteries have charge in them.
Thanks Helpful
Thank you friend..❤️🙂
I’m using a regular arduino board and there’s only 2 five volts and their taken so we’re does the motor connections go? I don’t get those
Where does the middle red wire of the servo motor go to?
Everthing is working fine but the servo is not rotating at all and the ultrasonic is not detecting obstacles what should i do ? Great video it was so helpful ❤️
Hi friend. Thank you so much for the nice comment..💓
Most likely the ultrasonic sensor is not working. The servo motor is given just to give the feeling of looking to both left and right after detecting the obstacle. If the servo motor is not there also it will work. But ultrasonic sensor is very important for proper functioning. Just check the connections to ultrasonic sensor once again. If it is correct and still not working, then most likely this sensor is faulty. Changing it should solve the problem..
@@Science_4U_ I changed it it worked thank you.❤ but another problem occurred all lights are on but nothing is moving what should i do please answer its for my project?
I checked the motors alone and its working whats the problem?
It is moving in a circle in port 1 and 2 only
Hi friend. Can you explain the problem clearly?. Do you mean that both motors are rotating but in opposite directions?
How it was working IR for turning automatic sensor have u used any code or it will be turn automatic
Hi friend. It is detecting obstacle using an ultrasonic sensor in front. When the obstacle is detected, it reverses changes direction and then moves forward, thus avoiding the obstacle. The algorithm for this is written in the code..
Hi, I tried doing this but I have a problem. Im using a l293d motor shield and 2 3.7v lithium batteries. The motor shield's green led lights up when i connect the battery, and the ultrasonic sensor and motor servo work just fine (they rotate left and right when something is in front of them), but the thing is the motor (wheels) aren't working. They only create a buzzing noise that stops momentarily when the motor servo and ultrasonic sensor is rotating. I do not think that the problem lies in the motor wheel because they work when i try connecting them directly to a battery. Any idea as to why this happens? Any help would be appreciated!
Hi friend. I think it is most likely a battery related issue. The batteries are not able to run all the motors together. Generally a buzzing sound is heard when the motors don't get enough power for rotation. Are you using 4 motors or just 2?. Try removing all the motors and connect just 1. Is it working now?. Then it is confirmed that a poor battery is the problem. 2 x 18650 batteries are good. But the batteries may be bad or discharged so it is not able to drive the motors. I definitely feel that replacing with a good battery will solve this problem..
it is also working. thank you.
Okay friend. Happy to know that it is working. ❤️🙂
Hello, I would like to ask you for help. I should make a robot like yours, but add an LCD so that when it avoids an obstacle it appears on the screen. How would I connect it?
It is very well possible. I have done several projects by connecting the SSD 1306 OLED display to arduino. You can watch those projects to see how the connection is done with the OLED display. then you can also open the code and see how code is written for OLED display. You have to combine both the code so that if an obstacle is detected, the required text is to be displayed on screen.
can I use 4x 18650 3.7V battery? will that be too much power? can I use the 5v pin in the L298n if it has too much power?
it is too much for the project friend. A total voltage upto 12V is fine. 2 x 18650 or maximum 3 x 18650 is okay. Beyond that, it will damage the board and motors.
@@Science_4U_ Thank you
i have a question, do we need to change many things in this code if im using a photoelectric sensor? is it possible?
Yes ftiend. You will be able to use photoelectric proximity sensor but definitely needs modification in the code.
I have an question what if we want two wheels more at the front what should we write in the code??
Hi friend..you need not do anything in the code. Just attach 2 more motors in the front. The wires coming from the front motors can also be connected to the motor driver board alongwith the wires coming from the back motors..I have done a similar project with 4 motors. You can watch that video below for better understanding..
ruclips.net/video/JK6zTM65Rh0/видео.html
But only problem I have seen with 4 motors is that it is a bit difficult to turn.
Sir can I take a cable and cut it and connect to motor driver and cable to adaptor will it work
Sorry friend, I did not understand the question. Which is the adaptor that you are talking about?.
First. Nice video. I follow this video and viola its working. The problem is it will work on the 1st try. then have to turn it off a long time, and will work again? What is the problem? Its not consistent. im using 2 9V.
Hi friend. Thank you so much. 🙂
The problem most probably points to bad batteries. Which batteries are you using?.
Did you mean that you are using 2 Nos. of 9V batteries?. Those batteries have very poor ampere ratings and gets drained very fast. They are meant for working in transistor radios where current drawn is very less. You can use 2 Nos. of 18650 3.7volt rechargeable batreries. Those are the best. Otherwise you can use 4 Nos. of AA 1.5V batteries. Those will also last longer that 9V batteries.
Thanks!!!
We have done everything according to the video and the sensor too is working... But the problem is when we keep the robot on floor, it is sensing only once and not sensing the obstacle again. But when he hold it in air, its working and sensing normally... Pls help me with this
Hi friend,surely I will help. I think that is due to poor batteries. When we keep on the floor, the motor consumes more power from the batteries. So this drops the input voltage and hence it stops working again. Have you used fresh AA 1.5 V x 4 batteries? If possible can you change to 2x 18750 3.7V rechargeable batteries?. Those are the best for these kind of projects.
I finished everything but it only works when i plug it into the computer. It won't work by the battery, there's a light on both boards but the car won't work until i plug it in.
Hi friend. Most likely it is a battery problem. When you are connecting uno through usb, the arduino board, the servo and sensors are powered feom usb. The battery then powers only the motors and hence even if the battery is discharged ot works fine. Are you using the servo motor too?. Can you remove connections to servo and can you check whether it is working now?.Replacing with a powerful battery should solve the problem.
I am about placing a order for an Arduino uno, i already have a raspberry pi pico, I wish you can do a video for a raspberry pi pico.
Please say something. On my motor driver, it's showing red led light, someone said it means that my motor driver is receiving low or high current, so it's shutting down himself. Am new to this, can you help me please. If you can give me your handle, I can send you my connection, so that you can put me through. Thank you so much
I'm using a raspberry pi pico
Hi, friend. I am not knowledgable in using raspberry pi pico. If you are using arduino uno for this project, I can help you.
Sir my I've connected 4 aa batteries of 1.5v as shown in the video, my sensor and servo is working, but both the motor is not working, when connected only on battery. When I connect the usb and battery simultaneously, then only the right motor goes backward and servo works, but left motor is not working
Okay friend..The problem could be most probably due to bad batteries. Please use new batteries and problem should be solved. Also check whether the connection from batteries are correctly given to the motor driver board.👍
Hey i have a question will this code work on a model with 4 motors and 4 tires???
Hmm yes friend..Sure!!! Just attach 2 more motors + wheels in front and connect the wires from these motors also to the L298N motor driver board. The wires from both left motors to be connected to the left side terminals of the L298N motor driver board. And wires from right side motors to be connected to the right side terminals of L298N driver board.
which pins are responsible for motors to run?
Hi friend. In this code, the commands for running the motors go from pin numbers 4,5,6&7 of arduino to the motor driver board. So pin numbers 4,5,6&7 are responsible for the motors to run..
i can't find de Motor Driver Arduino in tinkercad '-'
one question which glue are you using to stick things
Hi friend. It is called hot melt glue stick. I will give the link below.
11MM TRANSPARENT HOT MELT GLUE STICKS FOR DIY AND CRAFT WORK (14 STICKS) amzn.in/d/8xtvnkT
Pls help me, my wheels aren’t moving
Sir make a project on night patrolling robot sir please
Servo motor is working but car is not moving. How can check if my motor driver is faulty?
The motor driver needs to have 2 jumpers connected on ENA and ENB pins. The jumpers should be present for the working of the motor driver. Are the jumpers available?
Also to check whether the motor driver is working, connect IN1 pin to +5V of arduino and IN2 pin to GND pin of arduino. Power on arduino and motor driver board. If the motor driver is working, the motors should rotate now.
Hello good day ! We are currently using 3 pieces of 18650 (vape) batteries which has 3.9V so around 12 V of battery. We are already done programming it with remote control and stuff. We are now trying to make it an autonomous driving with obstacle avoiding property. Do you think the code that you provided will do just fine? I can send the whole specifications of the parts the we used for better visualization. Thank you
Yes sure!!!.. I think this code can be used for the obstacle avoiding part. What is the remote control module you are using for your vehicle?
@@Science_4U_ Hello, Its just a random TV remote, we just used it since its the only available resource we have. Ill try to input the code soon. it's 2 AM here rn.Ill hit you up here when something interesting happened. I just subscribed to the channel thank you so much
@@prokoloid869 okay..sure friend!!!
@@Science_4U_ Hello its me again, I just got the robot back and tried to upload the code, I also put the correct pins according to the wirings of my robot, however, it cannot let me upload in IDE.
*EDIT
the uploading worked but it doesn't move, the motors are just making weird noises and it doesn't show any reaction aside from the weird noises, what do you think is the problem?
*EDIT 2
Servo is working fine, it moves when it detects an obstacle, the problem now is the motor, it doesn't make any weird noises now but it doesn't show any reactions let alone moving.
Hello, I tried to run the code again but its still the same. The servo and ultrasonic sensors work but the motors are still stuck and not working. When I input the code with remote the motors works just fine, so I dont think the Arduino itself has the problem. It would be cool if you let me know what should I do
dear science_4u can I connect the 5v pin of servo and ultra sonic with l298n 5v pin?
Hi friend. You can power the ultrasonic sensor from the 5V output of l298n. But definitely it cannot give enough current to the servo motor. So it is better not to connect servo motor to this 5V output.
Hello, I have done the exact same set-up as you, but my servo doesn’t rotate..Other parts are ok.
can you tell me how I could fix it?
Hi friend..please check the connections once again. If the connections are correct and servo is not working, then it could be a problem with the servo motor. Replacing the servo motor will solve the issue. Also see if the servo motor is working with arduino connected through USB. If it works, it means that the batteries are not good and not able to drive servo motor. When arduino is connected through USB, the USB supply powers it and hence it gets sufficient power to rotate. Please check these things..
i can't able to see Arduino code whose link you given in description so can you please send the code here
You can download the code from the following link..
drive.google.com/file/d/11FJMN_PGLD_yJdtuzxBiAzmhhfKUOvxV/view?usp=sharing
Can a smd uno board be used to create this?
Yes friend.sure!!!..You can use an SMD version of the uno board also for this project ..Both have the same functions..SMD uses a soldered Surface mounted microcontroller chip. I am using a uno board in which the microcontroller chip is removable. But both versions have exactly same functions...
Hi,I connected 9V battery to motor driver l298n, motor driver's 5V pin to the Arduino's Vin pin and GNDs together.I connected ultrasonic sensor hc-sr04 to Arduino's 5V pin,GND to GND,trig and echo pins.Motor driver l298n and Arduino works properly,but ultrasonic sensor doesn't.What might be the problem?
Hello friend..From what you have told, the connections are done correctly. Most likely, the ultrasonic sensor may be a faulty one. Have you used this sensor without any problem before? If it is the first time that you are using this sensor now, then most likely it should be a faulty one. Replacing it should solve the problem..
@@Science_4U_ Thank you🙏
Bro does it enough the four AA BATTERIES??
Those are enough. But will not last long. 2nos. Of 18650 batteries are a better choice.
Sir, ive checked all the circuit connections and code uploading too... I did very carefully and correctly... When im connecting it, only the uno board's light is blowing but not moving.... Pls help me with this problem, we have our science project coming soon
Hi...Can you tell whether the led light in the L298N motor driver board is also turning on?
@@Science_4U_no sir, the light in the motor board isn't turning on
And sir, when I uploaded the code, only the servo motor just rotated backwards and didn't work
@@srilatha.b7752 okay. The light in the motor driver board should have actually turned on. Can you check the power connection to the motor driver board?. Are the +ve wire from the battery connected to +12V terminal of the motor driver board & -ve wire from the battery connected to GND terminal of thr motor driver board? By just giving power to the motor driver board correctly, the red light in the motor driver board should have turned on.
@@srilatha.b7752 Also can you tell whether you are using the same 4 x 1.5 V battery pack?. Are the batteries new ones?. If there is insufficient voltage, then also the motor driver board will not work.
Hi sir . I am making this project now. but i have some problems with L298N driver board. I contacted all the jumpers correctly and i check it for more then 5 times . When I attaching my motors with L298N driver board it doesn't work and also my Servo Motor is not working. All the elements are not default.
plz help me . I have to submit it tomorrow.
Hi friend. There could be some problem with the l298n motor driver board. We have to check and see if the l298n motor driver is working or not. Can you see 2 jumpers in l298n motor driver that is connected to ENA and ENB pins?
Can I use 9V battery? Those square ones
Yes ..sure friend..But they dont last long and they are not rechargeable too..
my servo motor is running as expected but wheels are not running. Why?
Hi friend. Most likely it is a problem with the l298n motor driver board. It may be faulty. Have you used it before or is it a new one?Also can you see 2 jumpers in place in the motordriver board, connecting ENA and ENB pins to the pins above that?. Those jumpers are required for enabling rotation of motors..
Can you tell the process of coding clearly step by step
My G I dont have a servo motor . Does it still work ? Is it works please tell me how can i make it so it would work without a servo motor
Hi friend. You don't need a servo motor for this to work. No need to change the code also. Just fix the ultrasonic sensor alone in front. The connections for the servo motor to arduino alone can be ignored.
Thank you very much 💀 I was really shocked by your quick answer . Thank you very much @@Science_4U_
Can i use esp32 cam instead of arduino uno? And also can i use L293D motor driver instead of L298N motor driver.
Hi. ESP 32 is a camera module which can be connected to arduino uno just like any other sensor. But, it cannot be used instead of arduino uno. Both have to be used together.
ESP32 CAM can be connected to arduino for different projects like face detection, QR code scanner, Motion detector and many more..
Yes sure, you can use L293D instead of the L298N motor driver. Both are used for driving motors..
I mean, can i use esp32 microcontroller instead of arudino uno to create this project?
What's the difference between L298N and L293D?
04:37 onwards the connections for Servo the motor is shown incorrectly in the video. Please follow the circuit diagram. I have encountered some problem initially because of not putting 2 jumpers in motor drive. After these two corrections it started working. I
Okay friend. I was telling about the colours that are generally given for servo motors..
Yellow/orange for signal wire..
Red for +5V
Black/brown for gnd..
In the servo motor that I used, the colour of signal wire was yellow but generally it comes with orange wire..also the servo motor that I used had brown ground wire.But some motors come with black ground wire..so that why I told black colour though the servo motor that I used had brown ground wire..
@@Science_4U_ Not about colors, Just check the connection to IOREF. The audio is telling not IOREF. May be its not audible clearly. I am talking about the Violet /Purple wire (middle one ) from the servo motor. Anyway it is working fine now. Your code is also working fine. Thanks
Ooh..okay friend.. anyway IOREF is a reference 5V that is to be given to input output devices. So IOREF is actually same as +5V..That is why I told +5V only. Also in SMD versions of arduino +5V only is written. There is no IOREF. So as a general term I told +5V. Thanks friend for pointing out..👍
@@Science_4U_ Thanks friend. My son had a knowledge fair in School today. He used your video to make the same Robot. He presented it successfully. Thanks a lot.
@@pmm782003 Thank you so much..Very happy to know that..🙂. Please do convey my regards to your son..💓
I have a problem. Im finished doing the wirings and already uploaded code. The led for motor driver turned on and also the led for arduino uno turned on. Use the same 4* 1.5 volts double a battery (eveready). The robot didn't move. The servo didn't rotate.
Okay. Was the "upload successful" message shown after you uploaded the code?. Was the code uploaded without any errors?.
yes the code was succesfully uploaded
no errors
the servo motor we use is second hand, its from a friend, she said it works fine because they tested it
we'll try to reset the arduino uno again, replace the ultrasonic sensor, replace the 4* double a batteries with 3.7 V rechargeable and replace the motor driver what other advices can you give?
Please help me, I have made the connections completely the same, my motor driver and Arduino turns on, even the servo rotates, but the wheels/motor are not working. I have used 3.7V x2 and also x3 batteries.
It should have definitely worked with 3.7v x 2 batteries. Have you used the ardino board and motor driver board before? Or is it new one?. Sometimes the boards can be faulty even if the lights turn on.
Also you can try interchanging the command pins from the arduino board to the motor driver board. The connections could have got interchanged. Also, if you have a multimeter, you can check whether the digital commands are going to the motor driver board by checking the voltage.
Can we use any arduino uno r4 or only the one which is used in the video,pls help and my boy is not moving even if the code is uploaded
Hi friend..you can use any arduino uno R3 or R4 or arduino nano etc. for this project. The code remains the same..
If the toy is not moving, there could be something wrong with the L298 motor driver board. Have you checked whether the 2 jumpers connecting ENA and ENB pins are assembled on the motor driver board?. Without those jumpers in place, the motor driver won' t work.So please check that..
where to connect enA and enB?@@Science_4U_
Thank for vedio my servo motor is rotating 360 degree how can i change to 180
Hi friend. You have to change the servo type. You may be having a continous rotation servo. It doesnt have position control. It countinously rotates and speed only can be controlled. You have to change it to a standard rotation servo which has a total rotation angle of around 210 degrees only.
Can I use 9 volt 2a dc supply cable
Yes sure friend. It will work. 👍
Which battery cell you used
Hi friend. For this project, I used 4 Nos. Of 1.5V AA batteries. It will be better if you can use 2 Nos. of 3.7V 18650 batteries as they are rechargeable and last really long.
Can I use one 9Volt battery to run these 2 motors and also the arduino? Thank you
Yes sure friend..you can do that..Arduino has an input voltage of 5 to 12Volts..9V will be perfect.. We get small 9Vbatteries for doing electronic projects. It can be used. But only thing is that, it gets diacharged very fast and are not rechargeable too. But the 18650, 3.7 V, Li Ion batteries last really long and are rechargeable also. So if you can get those batteries, it will be very good for these projects..
@@Science_4U_ Thanks for your reply. I can see you used only 4 AA batteries which is equal to 6 volt. so is it a issue to use 9 volt here or 6 volt? Also, can I later add IR sensor for line sensing? do you have any code by adding IR sensor? Thank you so much for your help
@@user-ir8xw5gz4n Hi friend..Definitely you can use 9V instead of the 6V that I have used..
Also I have made a line following robot with IR sensor separately.You can watch the video below..
ruclips.net/video/WR-VLwunauE/видео.html
But I have not added IR sensor to this obstacle avoiding robot and made a line following + obstacle avoiding robot together..I will do that in future..👍
@@Science_4U_ actually I want to make a Sumobot which needs both of these, Sonar and IR. Do you have any suggestions on that?
@user-ir8xw5gz4n ooh..okay friend..that is super cool..You can watch other videos in youtube in which both sonar and IR sensors are used..
I would suggest you use wheels with good grips so that you are not easily pushed out of the circle. Easiest solution may be to use multiple rubber wheels. If possible you can use rubber tracks like used in excavators which offer the strongest grip..Also use high torque motors which can really get that force to push the opponent outside. Make sure you add weight to your sumo bot also. All the above are not of any use if your bot doesn't have enough weight. You can make bot so that it either pushes your opponent outside or lift it with an arm and thows the opponent outside.
Hello sir I have made exactly as per the video and used a 9V battery, I have one new ij spare so thats not a problem, when I uploaded the code I thought the robo was supposed to run but no movement is happening, the lights on the motor driver and arduino are blinking but the apparatus is just not moving at all can you please help with this? I have to submit tomorrow
Hi friend. I will surely help. My first doubt is the motor driver board. Is the motor driver board used before or is it a new one?. Sometimes the lights could be ON, but if the motor driver is faulty, the motors just wont run.
Have you used the servo motor also?. Atleast is the servo motor turning to left and right when you place your hand in front of the ultrasonic sensor?
Also, can you check whether the rotation enable jumpers are put in place in the motor driver board. There will be 2 jumpers kept on the ENA and ENB pins of the motor deiver board. If those jumpers are not there also, the motors wont turn.
@@Science_4U_ I checked my ultrasonic sensor is not working for now, the motor driver is new btw and is it because of ultrasonic sensor that nothing is working or there is also some other fault present in the circuit?
@@xyzabc7241 There is some other fault friend. Even if the ultrasonic sensor was not working also, the motors should have rotated continously. I have another doubt. Was the code uploaded properly?. If the code was not uploaded correctly, nothing will work.
can you please help me the car not move the servo motor working but dc motor not
Okay friend. There could be several reasons why the DC motor is not rotating. Most probably it could be related to the motor driver board.Please check the following. Do you see light on the motor driver board? Are there jumpers connected to ENA and ENB pins in motor driver board?. Is it a new driver board or an old one which has already worked before?
sir can I use two 9v battery
Yes sure friend. You can connect 2 x 9V batteries in parallel and use them..
My Arduino board is a bit different there's no IOref but rather another 5v
Both IOREF and 5V are one and the same. Both pins give 5V output. You can use 5V pin instead of IOREF pin.
i use ch340 arduino and it doesnt have a ioref do you know for its substitute?
Hi friend. Is your CH340 a regular sized Arduino board or a nano board?. Instead ot IOREF another pin should be there in its place labelled 5V. Is there a pin like that?
@@Science_4U_ I use also a 2pcs of 3.7 batt 183650 still should i put that at 5V?
@@joannrosemalalis1374 Yes friend. The sensors are powered from the 5V outputs from arduino board. So if you are able to find any 5V pin in arduino board, you can use that to power the sensor.
Hello brother I have used 12v motors, so how much voltage should be needed to run the project.
Hello friend..Though you have used motors rated for 12V, I think you can use any voltage between 9V to 12V to run the project. This voltage can be given to arduino also without any problem..
@@Science_4U_I have given 12v supply through adapter, the ultrasonic sensor is detecting the object and stops working, what is the reason??
@@beyondusee8740 it stops working means that the motors stop rotating? Can you little more explain the problem that you are facing?
@@Science_4U_ the ultrasonic sensor stops working when it detects the object, and the motors, servomotor also stops working.
@@beyondusee8740 Hmm..okay friend..looks like a battery problem. Please change to a good battery and see if the problem is solved. Also, please check the connections once again..
I Have Four motors is it able to work on l298n motor driver?
Yes definitely friend. Just connect red wires of two left motors together and connect to one terminal at left side of l298n motor driver board..Connect black wires of two left motors together and connect to other terminal at left side of l298n motor driver board..Do this for right side motors also.
You can watch my following video for connecting 4 motors to l298n motor dtiver board...
ruclips.net/video/JK6zTM65Rh0/видео.html
Hi sir
Can i use 3 batteries each one is 3.7 volt?
will it work ?
Thank u
Yes friend. You can use 3 batteries. Only thing is that the motors will be rotating fast. You can use just 2 batteries if you want slower rotating speed.
@@Science_4U_the robot do not move only i feel a pulse in the motor
@adawymohamed okay friend. Can you do one thing?. Can you lift the car in your hand and try rotating the motor. Is the motor rotating once you help to start its rotation?
Sir everything is ok now but the bot is rotating in circle
Instead of going in a straight line.
And the speed is also fast a little bit.
How to control the speed using the code?
Hi friend, the bot is supposed to go in straight line only. There is some change in the pin connection I think. Can you confirm that one motor is rotating in forward direction and one motor is rotating in backward direction?. Or is it that one motor is stationary and another motor is rotating in forward direction?
Also since these are not servo motors, there is no way to change the speed using code. You can only reduce the power supply voltage, which will inturn reduce the motor speed.
@@Science_4U_ one is rotating forward and other is backward
@@maheshwarverma9806 okay.. understood. Then there should have been an interchange in the pin connections..
@@maheshwarverma9806 Please intetchange 2 pins of the control pins of the motor driver board and see if the motor direction is changed to forward. If the other motor changes direction, then interchange the other 2 pins.
for me the servo motor is keep spining how to fix it??
Hi friend. There are 2 types of servo motors. 1. Positional servo motor which can rotate only 180 degrees and 2. Continous rotation servo motor which can rotate 360 degrees. In this project you have to use the first type. But I think you have used the second type. That is why it is keeping on spinning. Please check.
My servo motor is working but the ultra sonic sensor is not working what is the problem
Hi friend. Do you mean that it is not detecting obstacles?
I have done everything wireing and code too but it doesn't work the audrino and motor driver lights are also on but no movement
Hmm..okay friend. There could be many reasons.
1. The motor driver board could be faulty. Have you used it before or is it a new one?
2. Are the batteries new?. If the batteries are discharged, then also it will not work.
3. Check the connections once again.
Can I keep a picture to your number that you can see and everything are new I had also tested them
Sir,I don't have jumper very close to in1 and in4 so what should I do
Okay friend. If you dont have jumper near to IN1 and IN4 pins, you can use a jumper wire to function as a jumper pin. Can you share a photo of your motor driver board in the following instagram id. I will help.
instagram.com/_science4u_?igsh=MTM5aXFpdTM5aG5lNg==
@@Science_4U_ Thank you sir
Sir i cant get the code
I can't get it from description
@@lankaranaraja8203 okay friend. then I will paste the code below.
#include
Servo Myservo;
#define trigPin 9 // Trig Pin Of HC-SR04
#define echoPin 8 // Echo Pin Of HC-SR04
#define MLa 4 //left motor 1st pin
#define MLb 5 //left motor 2nd pin
#define MRa 6 //right motor 1st pin
#define MRb 7 //right motor 2nd pin
long duration, distance;
void setup() {
Serial.begin(9600);
pinMode(MLa, OUTPUT); // Set Motor Pins As O/P
pinMode(MLb, OUTPUT);
pinMode(MRa, OUTPUT);
pinMode(MRb, OUTPUT);
pinMode(trigPin, OUTPUT); // Set Trig Pin As O/P To Transmit Waves
pinMode(echoPin, INPUT); //Set Echo Pin As I/P To Receive Reflected Waves
Myservo.attach(10);
}
void loop()
{
Serial.begin(9600);
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH); // Transmit Waves For 10us
delayMicroseconds(10);
duration = pulseIn(echoPin, HIGH); // Receive Reflected Waves
distance = duration / 58.2; // Get Distance
Serial.println(distance);
delay(10);
if (distance > 15) // Condition For Absence Of Obstacle
{
Myservo.write(90);
digitalWrite(MRb, HIGH); // Move Forward
digitalWrite(MRa, LOW);
digitalWrite(MLb, HIGH);
digitalWrite(MLa, LOW);
}
else if ((distance < 10)&&(distance > 0)) // Condition For Presence Of Obstacle
{
digitalWrite(MRb, LOW); //Stop
digitalWrite(MRa, LOW);
digitalWrite(MLb, LOW);
digitalWrite(MLa, LOW);
delay(100);
Myservo.write(0);
delay(500);
Myservo.write(180);
delay(500);
Myservo.write(90);
delay(500);
digitalWrite(MRb, LOW); // Move Backward
digitalWrite(MRa, HIGH);
digitalWrite(MLb, LOW);
digitalWrite(MLa, HIGH);
delay(500);
digitalWrite(MRb, LOW); //Stop
digitalWrite(MRa, LOW);
digitalWrite(MLb, LOW);
digitalWrite(MLa, LOW);
delay(100);
digitalWrite(MRb, HIGH); // Move Left
digitalWrite(MRa, LOW);
digitalWrite(MLa, LOW);
digitalWrite(MLb, LOW);
delay(500);
}
}
Thanks
Sir, I have completed the model by seeing ur video.but only one motor is running and another one is not working and the car is rotating in a circular manner because of One wheel.what might be the problem? and how can I resolve it sir
i Have also changed the motor Driver too
Okay friend. I think the battery may not be powerful enough to rotate both thr motors together. Can you lift the robot in you hand and try rotating the wheel which is not rotating. Do you feel like it is starting to rotate or there is no rotation at all?. Also alongwith the battery, connect uno to usb also. Now are both wheels rotating?. Most likely i think it should be due to poor battery.
I have also lifted up sir but only one wheel is rotating but if I give direct connection to the battery then it is rotating
@@SHIVKUMAREASWARB okay friend. Can you do one thing?. In the motor driver board, remove wires from IN1 & IN2 and connect to IN3 and IN4. Also remove wires frim IN3 and IN4 and connect them to IN1 and IN2. Is the other motor now rotating?.
Hey dude, i used like u used 4 aa batteries but motor need more power. Using ur same motor
Yes..that is true friend. 4 x AA batteries wont last long..2x18650 rechargeable batteries is a much better option in my opinion..
@@Science_4U_ I mean I tried it and the motor is soo fast, how can I slow it down.
@@mystery_1101 Okay. The easiest way to reduce the motor speed is by reducing the battery voltage. There is another way to reduce the motor speed by using PWM control for the motor driver. A PWM signal has to be given to the ENA and ENB pins of the motor driver board. By reducing the width of the PWM signal, the motor speed can be reduced..
Bro i have done
everything like this but problem is it is over speed is there any way to reduce speed
Yes friend, sure. Speed is proportional to the input voltage given to the motors. We can reduce the speec by reducing the input voltage.
What is the battery pack used now? How many batteries are you using?
@@Science_4U_ i used 2 batteries of 3.7 volt which means total input 7.4, 18650-1200mAh li ion cell
Hmm. Okay. If you want to further reduce speed, you can use a battery pack with 4 AA 1.5V batteries. That will be a total of 6 volts.
If you want to further reduce the speed, you have to use a different battery for the motors alone. In my project, i have used same power supply. You can use your 18650x2 powerpack for powering the arduino uno+servo motor+ultrasonic sensor. Arduino requires minimum 6V at input, so you have to use battery with more that this voltage. For the motors alone, you can use a separate battery with lower voltage. You can use a single 3.7V 18650 battery also for the motors which will drastically reduce the speed.
Hlo nice video can we use motor driver model L239D as we have??
Hi..did you mean L293D motor driver shield which is installed on top of arduino uno board?
@@Science_4U_ yaa as it have only 2 connection points and I'm confuse the will work or not 🙂
@@latikasarkar4978 Yes it will work too. L293D can drive 4 motors but 2 motors will be in parallel. That is, it cannot control all 4 motors independantly. Whereas L298N motor driver that I have used can drive all 4 motors independantly.
@@latikasarkar4978 For this project, we do not need to run 4 motors independantly. There are only 2 motors connected. Hence, L293D will also definitely work.
@@latikasarkar4978 But only thing is that the code that I have used will not work with this L293D motor driver shield. You have to install adafruit library and also there are different commands for running the motors using motor driver shield. So overall programming will be very different.
Mine motors are working but the servo is not working,what to do?
Hi friend. The servo motor could be faulty. Replacing the servo motor shoukd solve the problem. Before that please check whether the connections to servo motor are given correctly. Are the servo motors jerking atleast or it is not moving at all?
what is the minimum voltage needed ?
Minimum 5V is required for arduino uno to work. In my experience, 7.5 to 9V is most ideal for this project.
Sir my robot is only working when USB connected to Uno to PC
Okay friend. Then it is confirmed. The reason why only one motor is working is due to discharged batteries. When you connect uno to PC, the uno, sensors and servo are powered by PC. So more battery power is available for rotating the motors and hence both motors rotate. With the uno disconnected from PC, the batteries have to power everything together. So it becomes difficult to rotate both motors together. So change to a new battery and the problem will be solved.
Sir I use a new battery then also the problem is there
Mine isn’t working that properly it’s just going mainly backwards and won’t go forward and just does what it wants.
Hmm. Okay friend. If you bring hand near the ultrasonic sensor, is the rotation changing?.
Yes the sensor moves right and left when it detects something in front of it. But the car would only go backwards
@@BeatBox_Raps okay friend. It is very easy to correct that problem..Just interchange the wire connections of the motors at both sides of the motor driver board. Is it working correctly now?
@@Science_4U_ don’t get what to do
@BeatBox_Raps Don't worry friend. Czn you come in instagram?. I will chat and help you solve the problem. Following is my instagram id..
instagram.com/_science4u_?igsh=MTM5aXFpdTM5aG5lNg==
Bro my motors are stop working sometime while car is going ahead and battery is fully charged
It could be some loose connection or problem with the motor driver board. Is it detecting obstacle correctly?. Also if you remove ultrasonic sensor, is it continously going to front without stopping?. Can you check that?
I just only placed the servo and ultra and arduino moror driver thats only i am in my mothers home i cant build it but some days after i can build😢😢
Okay friend...
Are all of the jumper wires male to female
Hi friend, the ultrasonic sensor and motor driver board connection to arduino requires male to female jumper wires. Whereas the servo motor to arduino connection requires male to male jumper wires..
Bro can we use 9v hw battery
Yes friend. Definitely you can use 9V HW battery. But it will not last long, since its capacity is less. That is the problem. You can connect 2 or 3 batteries in parallel and power the robot so that it will last longer..
What library should install
Hi friend..No need to install any library. Only Servo.h library is required for the operation of servo motor but that library is already pre-installed when we install arduino IDE software itself.