Arduino obstacle avoiding robot problem code

Using Arduino Programming Questions
#1

hi to all guys, I’m building a robot that avoids obstacles, but I have a problem with the code. I did not write myself, I found it was ready for a robot in 2wd, mine is a 4wd. I can not add other engines. I get an error in the code. Could you help? thanks a lot!

“APC_4_ROBOT.ino: In function ‘void checkForward ()’:
APC_4_ROBOT: 109: error: a function-definition is not allowed here before ‘{’ token
APC_4_ROBOT: 180: error: expected `} 'at end of input”

APC_4_ROBOT.ino (10.1 KB)

#2

You can' t add the brackets in these lines:

//-------------------------------------------------------------------------------------------------------------------------------------
void checkForward() { if (motorSet=="FORWARD") {motor1.run(FORWARD); motor2.run(FORWARD); {motor3.run(FORWARD); motor4.run(FORWARD); } }     // make sure motors are going forward
//-------------------------------------------------------------------------------------------------------------------------------------
void checkBackward() { if (motorSet=="BACKWARD") {motor1.run(BACKWARD); motor2.run(BACKWARD); {motor3.run(BACKWARD); motor4.run(BACKWARD); } } // make sure motors are going backward
//-------------------------------------------------------------------------------------------------------------------------------------

These lines must be:

//-------------------------------------------------------------------------------------------------------------------------------------
void checkForward() { if (motorSet=="FORWARD") {motor1.run(FORWARD); motor2.run(FORWARD); motor3.run(FORWARD); motor4.run(FORWARD); } }     // make sure motors are going forward
//-------------------------------------------------------------------------------------------------------------------------------------
void checkBackward() { if (motorSet=="BACKWARD") {motor1.run(BACKWARD); motor2.run(BACKWARD); motor3.run(BACKWARD); motor4.run(BACKWARD); } } // make sure motors are going backward
//-------------------------------------------------------------------------------------------------------------------------------------
#3

Thanks a lot now it works, I can ask you another question?
When the robot is connected to the USB PC and powered by 4 AAA batteries work, if the ex-usb and leave only the battery stops. What power is it for? thanks a lot!

#4

It can be because the motor are powered only by the batteries. What kind of robot it is?

#5

something like this: Robot

I mounted the motor shield and I connected the power supply. 4 AAA batteries. Even I have to feed the Arduino? it is as if he had enough power, and does not move

#6

Even I have to feed the Arduino?

Yes. The Arduino likes Kibbles and Bits, three times a day.

#7

Sorry I'm Italian and I do not speak English very well .. However, I have to use the Arduino to 9v and 9v to the motor shield?

#8

In the picture you attached at your post, I can see that the Arduino UNO is powered by the battery pack. Can you confirm that yours is different?

#9

mine is powered by the battery pack, attached to the motor shied. The LED turn on but does not move.

#10

hello, Real quick question. I am also working on a very similar project, and I'm very new at programming. So, my question is; if I'm going to use only two motors I would just delete the Motor 3 and motor 4 functions, right?
Thanks in advance!

#11

if I’m going to use only two motors I would just delete the Motor 3 and motor 4 functions, right?

Yes.

#12

Please help me making my code ..
if anyone having coding experience plss help me
i Am Using HC SR-04
Tower pro micro servo
futaba s3003 x2 hacking for continous roatation
arduino uno
9 v battery for arduino
4.8 v battery for ardiuno.......

#13

Starting a new thread might be a better idea. With a clear description of your problem.

#14

i dont know coding ... i have made the hardware i i want a complete code for my robot.
if you want i can send you pictures

#15