How to make Obstacle Avoiding Robot- Advanced Algorithm (AA) || Scans LEFT & RIGHT
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- Опубликовано: 18 мар 2023
- Hello friends,
In today's video I am going to show you how to make an intelligent obstacle avoiding robot using advanced obstacle detection algorithm. This robot scans for obstacles on LEFT and RIGHT and detects them and decides to go in which direction in order to avoid them. 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.to/3RPzXw8
2. L298N motor driver : amzn.to/3RO0F8k
3. HC-SR04 Ultrasonic Sensor : amzn.to/3xwFTU6
4. SG 90 Servo Motor : amzn.to/45M1RPs
5. Motors with wheels : amzn.to/3W5EYTW
6. Battery pack, 18650 x 2: amzn.to/3ziAm3N
7. Jumper wires : amzn.to/3xG4FB0
Link to download code:
drive.google.com/file/d/1PIou...
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.
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There is a connection in ENA and ENB of the motor board
There is small piece of plastic i am seeing in the circuit diagram
Yes. ENA and ENB are the motor output enable pins. There is a plastic with a metal sheet in between than connects the ENA and ENB pins to 5V to give a 5V command and thus enable operation of the motors. If the plastic is removed, the motors will not be enabled and hence will not work.
Sir Make an experiment on night patrolling robot sir
We have to use which motor driver h bridge or 2a
Both H bridge and L298N 2A motor driver will work friend. But 2A will be better because of its higher current capability..
my servo is not moving I also installed library and sir can you pls tell tell me the wiring of the servo as it is not clear in the video
Hi friend..You can download circuit diagram from the following link. You can do the wiring by watching the circuit diagram..
Link to circuit Diagram:
drive.google.com/file/d/1EpYapeHpuXFgmIY0kVXYZU-h94mlpfeA/view?usp=sharing
Can we connect 4 gear motors please reply
Yes sure..instead on 2 you can connect 4 geared motors also. The wires from 2 motors can be joined together and connected to L298n motor driver on both sides..
hey bro can i connect 6 gear motors please reply
Yes friend. It is definitely possible. But turning can be a bit slow because 3 wheels are there on one side. So there will be some skidding of the wheels during turning. But it will work.
sir, can I add inductive proximity sensor to detect metal and LCD display to show when the sensor detect the metal and avoid that metal to that project?
Sure it is possible friend. You can use a 3 wire inductive sensor. The output wire can be given to any of the digital input pins of arduino. But before giving just make sure that the voltage is less than 5V. Otherwise put 2 resistors in series as voltage divider and reduce the output voltage and give to arduino digital input pin.
@@Science_4U_ Thank you so much, sir. I'll try for my project.
@@Science_4U_ Sir, Can I use hall effect sensor instead of using inductive proximity sensor?
@@moechanmyaekhin8046 You can use hall effect sensors to detect magnetic field. If you bring a magnet near hall effect sensor, it gives a voltage directly proportional to the magnetic field strength. But, a hall effect sensor as such cannot detect metals. It detects only magnetic field. An inductive sensor can detect metal. So it depends on your application to decide which sensor is to be used.
@@Science_4U_ Thank you so much for your advice, sir. It really helpful to me.
Hello.My driver l298n is beeps( Tell me pls what to do...
Hi, friend. In fact, the L298N driver board cannot generate this beep because it does not have a buzzer. Most likely, this sound signal is emitted by engines. This usually happens when you try to reduce the motor speed to a very low value using pulse width modulation (PWM). Are you using a PWM signal to control the speed of the motor? When you reduce the PWM frequency to a very low value, the motor beeps and stops because it cannot spin slower than that value. You can increase the PWM frequency and the motor will start spinning again.
Sir did I have to upload library
Hi friend. You don't need to upload any library for this code to work. The code uses only Servo.h library for controlling the Servo motor in front. This library is already pre-installed in Arduino IDE software and so you don't need to upload library separately.
sir my wheels are not responding uickly they are slow
You mean it is not detecting any obstacle?.The ultrasonic sensor that you have used is a working one?. Also check connections from ultrasonic sensor are correct. This looks like a problem with the ultrasonic sensor..
sir last thing to ask bymistacly i have removed the cao of enb and ena ......so what to do
What do you mean by cao, friend? ..I didn't unserstand..Did you mean jumper pins?.
cap
@@Science_4U_
sir code is uploaded succesfully but its not working@@Science_4U_
bro if any object came in front of sensor,so it automaticaly change direction? or working as writen in code?
This video uses a code for scanning obstacles in both left and right direction..If there are no obstacles in right side, it goes towards right. If there are no obstacles in left side, it goes towards left.
sir which library ihave to istall
Hi friend. This code just uses Servo.h library. This library is actually inbuilt in IDE software and need not be installed separately. If the code shows an error during compilation, this library can be installed manually by going to tools..manage libraries...search for servo and install the library.
MY ULTRASONIC SENSOR AND SERVO MOTOR IS WORKING PROPERLY BUT MY GEAR MOTORS ARE NOT ROTATING CAN YOU PLEASE TELL WHAT COULD BE THE REASON ? PLEASE REPLY AS I HAVE TO SUBMIT THE PROJECT TODAY PLEASE REPLY.
Hi friend. There could be several reasons why the motors are not rotating.
1. Can you see 2 jumpers in the motor driver pin connecting ENA and ENB pins to the pins above? . These are the enable jumpers and are required to enable motor rotation.
2. Next, the motor driver itself could be faulty. The lights will become on, but it could be faulty. Have you used this motor driver board before or is it a new one?
3. The motors will not rotate if the batteries are discharged. But I will not suspect that because the servo motors are working. So batteries may be adequately charged. However, you can keep the uno connected to the USB source and switch on the battery and then try whether the motors are rotating. Since USB is connected arduino, it will take power from USB and batteries will be used for rotation of the motors alone. So, even if the batteries are not sufficiently charged, it may work. Also you can try helping the motor to rotate with your hand. It will rotate if discharged battery is the problem.
Please what is the Volt of the battery
I am using 2 Nos. of 18650 Lithium ion batteries. Each battery has a voltage of 3.7V, so total battery voltage will be 7.4 V. These batteries last really long and are rechargeable also.
You can even use 4 x AA batteries which will be 1.5 x 4 = 6Volts. Initially I had used these batteries. But they get discharged very fast and are not rechargeable also. So I would recommend using 2 x 18650 3.7V batteries. You can buy standard battery holders also for that.
Here all the circuit is same as the previous video you made? Just we have to change the code ain't we?
Yes. That is correct..
How to increase the speed of the motor by editing the code
Hi friend. The code is written for maximum speed only. Further speed can be increased by increasing the battery voltage.
why the code seems like no scan left and right
Hi friend. Is the robot detecting obstacles?
Please give us the code
can i use arduino atmeg
Hi friend. ATMega is the name of the microcontroller used in Arduino Uno, Arduino Mega and Arduino Nano. All the 3 arduino boards have different number of pins and come in different sizes. So, to your question, the answer is Yes!!!.You can use any arduino board for these projects..
Can you tell how to install library
We can install library by opening IDE software, go to tools>manage libraries. There we have to search for required library and click install. For servo motor the library is built in and so you need not install it again..
thanks@@Science_4U_
Sir can you tell how to install Library and code ...pls
Hi friend. For installing library, you have to open IDE software, goto tools, manage libraries. Search for the required library and click install.
For installing the code, you have to open code in IDE software and click on upload button to upload code to arduino..
which library i have to install
@@Science_4U_
Hi friend. This code just uses Servo.h library. This library is actually inbuilt in IDE software and need not be installed separately. If the code shows an error during compilation, this library can be installed manually by going to tools..manage libraries...search for servo and install the library.
Здравствуйте, Сэр, я попытался включить всё по схеме, и когда подаёшь электричество, драйвер l297n начинает пищать. Пожалуйста, подскажите как с этим справиться?
Привет, друг. На самом деле плата драйвера L298N не может генерировать этот звуковой сигнал, поскольку на ней нет зуммера. Скорее всего, этот звуковой сигнал издают двигатели. Обычно это происходит, когда вы пытаетесь снизить скорость двигателя до очень низкого значения с помощью широтно-импульсной модуляции (ШИМ). Используете ли вы сигнал ШИМ для управления скоростью двигателя? Когда вы уменьшаете частоту ШИМ до очень низкого значения, двигатель издает звуковой сигнал и останавливается, поскольку он не может вращаться медленнее этого значения. Вы можете увеличить частоту ШИМ и двигатель снова начнет вращаться.
@@Science_4U_ Здравствуйте, спасибо за ответ. Нет, я не использую сигнал ШИМ, только то, что на схеме и ваш скетч.
@@user-iy7uw1re7e окей, друг. Тогда я думаю, что напряжения аккумулятора недостаточно для привода моторов. Вы используете новые батарейки? Какое напряжение батареи вы используете? Попробуйте использовать батарею 9 В или 12 В, это должно решить проблему.
Здравствуйте, я использовал 4 батарейки х 1,5 вольт =6 вольт, и ничего не запускается :(
@@user-iy7uw1re7e Хорошо, друг. 6 вольт достаточно для работы проекта. Может быть несколько проблем, почему он не работает. Колеса вообще не вращаются? Иногда плата драйвера двигателя L298N может быть неисправна. Вы используете новую или уже успешно использовали эту плату драйвера двигателя? Также вы можете увидеть перемычки, подключенные к контактам ENA и ENB платы драйвера двигателя. Эти контакты необходимы для обеспечения вращения двигателей.
Can i do it withEG L293D Motor driver
How to connect the wire in l293 motor
Yes, sure friend!!! L293D will also work. Only thing is that L293D has a lower current rating (600mA) than L298N (2 A). So generally L298N is used for driving high power high torque mptors. But for these small geared motors used in this project, L293D is more than sufficient🙂
Please see the links below..
images.app.goo.gl/uouUZpnC7czdHkGf7
images.app.goo.gl/jLJB25xd4REzPM1Y9
Hey where is code
Please 😢
Hi friend..The code can be downloaded from the links given in the description box, below the video.
The compilation shows that the code has error
What is the error that it is showing?. I have checked the code and then only uploaded.
It shows:21:12:error:expected initializer before numeric constant
Return code is not zero
@@Science_4U_It shows:21:12:error:expected initializer before numeric constant
Return code is not zero
we have to install library for code
For this project, since we are using servo motor, so we have to install servo library. Different modules require different libraries to work. Library contains a set of functions for that component to work. For example, different libraries are required for LCD and OLED displays, displaying graphics etc..
Can you tell how to install library
@@abirojha2896 we can install library by opening IDE software, go to tools>manage libraries. There we have to search for required library and click install. For servo motor the library is built in and so you need not install it again..
Sir how much time does it take to upload code
As it is almost 1 hour I have been uploading code
Ooh friend..it will not take hours..it will hardly take some 15-20 seconds only for uploading the code. After uploading the code, it will show message "upload successful"..There can be some problem. Please try uploading the code from another PC or laptop..
Please provide the code
Hi friend. The link to download the code is already given in the description box. I will give the link here also.
drive.google.com/file/d/1PIouNdPENbTkcDi6q9ZsWOabPCpoA1wb/view?usp=drivesdk
Hello sir,,in your video,,your robot runs slowly,,but according to your code provided,,my robot runs very fast. How can i slow down my robot like yours?
Hi friend, the best way to slow down the robot is to reduce the battery voltage. I have used 2x18650 batteries which gives a total of 7.4V for the batteries. If you are using a 9V or 12V battery, the robot will move much faster..
There is another way also to reduce the motor speed by PWM control. It is bit more complicated. For that you have to remove the jumpers on the motor driver board and give PWM signals from arduino. By controlling the PWM signal width, you can control the motor speed. But this method is a bit complicated. So I will suggest to reduce the battery voltage. You can even use 1.5AA x 4 batteries which gives 6V and the slowest speed.
What is the battery that you have used?
@@Science_4U_ I'm also using 7.4V in total,,2 piece of 18650 3.7V rechargeable battery. But my motors much faster than yours,,I want it to run slower like yours.
@@sk.ahsanabid941 can you use 4 x AA1.5 V batteries? Mine was almost discharged. So that was why it was running slower..
My code is not uploading errors are showing
Hi friend. What is the error that it is showing?. Have you selected thr right port in tools for uploading the code. CN you plug to another usb port and try again?
Sir I had made it in first time its totally worked after 1 day I checked mean the servo get a sound and not miving
@alhamdulilla01 Hi friend. If you hear jerk like sound ftom servo, then most likely the battery is dicharged. Using a new battery should solve the problem.
Sir I have brand new 3 lithium battery
Thats only I put its coming sound from servo
I use two 9v battery and Arduino gets on but sensor and motor is not responding
Hi friend. There can be several reasons. Is the light on in the motor driver board?. Is it a new motor driver board or have you used it before?
@@Science_4U_ it's new
@@kevincelestine7020 Hm..okay mostly it could be the problem with motor driver board. Do you see jumpers connected to ENA and ENB pins of motor driver board?
@@Science_4U_ all the connections are copied as you said in the video and I checked it but still not responding are they battery issue or something don't know 😮💨
Hi friend. Dont worry.We have to check one by one to identify the problem. First can you check whether jumpers are connected to ENA and ENB pins of motor driver board. These jumpers should be there when you purchase the board itself. But some don't have that. This jumpers act as enable commands to enable rotation of the motor.
Can you give us the code please 🥺🙏🙏
Hi friend..The code can be downloaded from the link given in the description box.
I will give the link here also..
drive.google.com/file/d/1PIouNdPENbTkcDi6q9ZsWOabPCpoA1wb/view?usp=drivesdk
pls
Hi friend. Sorry for the late reply. Saw the mssg now only. L298N 2A motor driver is better as it has higher current capacity for driving geared motors..
The code is not opening
Hi friend. Are you not able to download the code or the code is downloaded but not opening?
The code is not opening like if I open the link it's showing empty
@@Science_4U_ mestre, o código no link esta com erro para abrir, dependendo da versão de arduino que a pessoa tem na máquina não abre. Eu só consegui abrir o link que senhor postou no comentário.
sir pls help fast
Hi friend..what is the problem?
Sir code is uploaded but it’s not working …..connection are perfect but I don’t know the reason
Sir I don’t have that metal cap on l289n motor driver on ena and enb
@abirojha2896 Hi friend..sorry to hear that this is not working. Can you mssg me in instagram. I will ask you to do some checks and will identify the problem..
Hi friend. The jumper pins are required on ENA and ENB pins. That act as a command to switch ON the motor driver. Please message me in instagram. You can share photos of connections also..I will check..
Please give me code 😊
Hi friend. The code can be downloaded from the google drive link given in the description box. I will post the links for downloading code and circuit diagram here also.
Link to download code:
drive.google.com/file/d/1PIouNdPENbTkcDi6q9ZsWOabPCpoA1wb/view?usp=drivesdk
Link to circuit Diagram:
drive.google.com/file/d/1EpYapeHpuXFgmIY0kVXYZU-h94mlpfeA/view?usp=sharing