Problem with our school project

Other Hardware Robotics
1

Hello!
We are trying to get a motor and a H bridge working together so that the motor can turn forward and backward.
However, it doesn't work, and we don't know why.
Our program and our set-up are copied from this video :

(it's in french but nevermind)

Here is the program :

int in1 = 8;
int in2 = 7;

void setup() {
  pinMode(in1, OUTPUT);
  pinMode(in2, OUTPUT);
}

void loop() {
  digitalWrite(in1, 0);
  digitalWrite(in2, 0);
  delay(3000);
  digitalWrite(in1, 1);
  digitalWrite(in2, 0);
  delay(3000);
  digitalWrite(in1, 0);
  digitalWrite(in2, 0);
  delay(3000);
  digitalWrite(in1, 0);
  digitalWrite(in2, 1);
  delay(3000);
}

And here is the circuitry:

IMG-4045
IMG-40451920Ă—1832 368 KB

Thanks for your help! :slight_smile:

EDIT : Thanks to everyone who helped, I don't really know what we did but it works now, so problem solved! :slight_smile:

2

Hello leogal

Take a view here to gain the knowledge.

HTH

p.s. Your powersupply could be to small to run the motor as well.

3

Thanks for your answer.
However, it seems a little bit too complex for what we want to do...

4

if you want to do what you say you want to do, there is no more simple way.

5

Go to library manager, search on L298, pick one of the libraries, try the examples.

6

Use a 6xAA (9V) battery pack to power the motors, instead of the 3xAA (4.5V) pack shown in the picture.

Make sure that all the grounds are connected.

7

In addition be carefull while connecting power source

8

Dronebotworkshop makes very good written articles with accompanying videos that I find thorough, and understandable at a beginner knowledge level.
https://dronebotworkshop.com/dc-motor-drivers/