Obstacle Avoidance

Using Arduino Programming Questions
#1

So I made a robot it works and I already checked the HCSR04 sensor is not broken. I just want it to stop when it sees something but when I tried something like this it doesn’t work.

if (distance < triggerDistance)
{
digitalWrite(Motor1Pin2, LOW);
digitalWrite(Motor1Pin1, LOW);
digitalWrite(Motor2Pin1, LOW);
digitalWrite(Motor2Pin2, LOW);
}

WHY? Please help I called 911 but they hung up on me :’(

#2

Please help I called 911 but they hung up on me

Perfectly understandable. What does that code not do that you want? Or, what does it do that you don't want?

#3

Hey, It doesn't do anything. When I upload it the robot just moves and you could wave your hand in front of it but it doesn't stop it continues moving. Thank You

#4

You need to use serial to put some debug prints in your code.

You could for a start:

  • Print out the value of distance so you can see if it’s < triggerDistance
  • Print out a “Hi” inside that if(){} so you can see if the logic’s actually taking you there.

You could also show all your code not just that snippet, since the problem could be anywhere… Also a circuit schematic…

#5

http://snippets-r-us.com/

How to use this forum

#6