I would like to know if i can still operate the ultrasonic sensor in the switch case if the reading of the ultrasonic sensor is used as the condition for the switch case. Because currently inside the switch case the ultrasonic sensor reading is stuck on the switch case condition and as such it canno…

const int echoPin = A3; // attach pin D2 Arduino to pin Echo of HC-SR04 const int trigPin = A6; //attach pin D3 Arduino to pin Trig of HC-SR04 long duration; // variable for the duration of sound wave travel int distance; // variable for the distance measurement int WallLength; int state = 0; int In…

I used WallLength to try and bypass the switch case but it did not work.

[image] thibedi: case 2 : That will not work. Remember that the case variable is a float. You need to use greater than (>),less than (>) etc. The main approach, reading the sensors first and then deciding upon values is perfect as I can see! You use delay. Get rid of them. They create lots…

After i have picked up the box i need to use the ultrasonic sensor again to detect a wall then i can actually drop the box down.

This sounds like a recent post using another title. "Pick up a box"....... Who will understand anything from that? Loop is running, You read the sensors and act upon that. Then, reading the ultrasonic again is confusing. The next run in loop will read that again. I would use the basic case to con…

[image] thibedi: After i have picked up the box You don't respond to prior reply. Did You read it?

You need to get another reading from the sensor. To do that, the following code needs to be re-run, I suggest putting it in a function and calling that when you need a new measurement to be taken. digitalWrite(trigPin, LOW); delayMicroseconds(2); digitalWrite(trigPin, HIGH); delayMicroseco…

[image] thibedi: const int trigPin = A6; //attach pin D3 Arduino to pin Trig of HC-SR04 int sensor1 = A7; pinMode(trigPin, OUTPUT); // Sets the trigPin as an OUTPUT pinMode(sensor1, INPUT); What Arduino are you using? If it's a basic Nano, pins A6 and A7 are not digital I/O pins so you …

i am using a Arduino NANO 33 IoT

Switch cases and ultrasonic sensor

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Railroader September 12, 2022, 11:46pm 2

Pleas post the code, IDE autoformatted and using code tags.
Poetry is not enough.

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Switch cases and ultrasonic sensor

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