servomotor (arduino)

Can you elaborate on what your trying to do

You have an ultrasonic range finder (HC-SR04) but is this mounted on a servo or monitoring the servos, or are the servos driving a mobile platform and your using the HC-SR04 for collision avoidance or is this something completely different

Please provide a diagram and more detailed description

Thanks

Thank you very much for your request.

I want to make a montage with 4 servo motors, an ultrasonic sensor HC-SR04, an Arduino UNO, a power supply (battery)

  When a person approaches 50 cm from the detector, I wish that the servos are turned on; when she leaves the servos stop.

The movement of the servo must be independent of each other. (the sensor is monitoring the servos)

Le 6 oct. 2014 à 16:35, peteroakes <messages@element14.com> a écrit :

 

element14

servomotor (arduino)

réponse de Peter Oakes dans Arduino - Afficher la discussion complète

Can you elaborate on what your trying to do

 

You have an ultrasonic range finder (HC-SR04) but is this mounted on a servo or monitoring the servos, or are the servos driving a mobile platform and your using the HC-SR04 for collision avoidance or is this something completely different

 

Please provide a diagram and more detailed description

 

Thanks

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Do you mean that the servos turn on and off based on the servo? If so then this is quite simple to do, please clarify if this is what you meant.

You only mention one sensor but you have it monitoring for someone within 50cm and also monitoring the servos, are you using 2 sensors ?

or is the sensor monitoring for people close to it, If detected it starts the servos (4 with their own actions), but if the person / object moves out of range of the sensor the servos will stop what ever there doing and wait for a new presence to be detected by the sensor

the servos turn on and off based on the HC-SR04 Ultrasonic Sensor

Le 6 oct. 2014 à 18:47, kidiccurus <messages@element14.com> a écrit :

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the ultrasonic sensor (and servos) are attached to the wall. when a person approaches 50 cm or less, servos start in march.

Yes, the sensor is monitoring for people close to it, If detected it starts the servos (4 with their own actions), but if the person moves out of range of the sensor the servos will stop what ever there doing and wait for a new presence to be detected by the sensor.

Le 6 oct. 2014 à 20:54, peteroakes <messages@element14.com> a écrit :

You only mention one sensor but you have it monitoring for someone within 50cm and also monitoring the servos, are you using 2 sensors ?

 

or is the sensor monitoring for people close to it, If detected it starts the servos (4 with their own actions), but if the person / object moves out of range of the sensor the servos will stop what ever there doing and wait for a new presence to be detected by the sensor

#define echoPin 12

#define trigPin 13

void setup() {

  Serial.begin (9600);

  pinMode(trigPin, OUTPUT);

  pinMode(echoPin, INPUT);

}

void loop() {

start:

  long duration, distance;

  digitalWrite(trigPin, LOW);  // Added this line

  delayMicroseconds(2); // Added this line

  digitalWrite(trigPin, HIGH);

//  delayMicroseconds(1000); - Removed this line

  delayMicroseconds(10); // Added this line

  digitalWrite(trigPin, LOW);

  duration = pulseIn(echoPin, HIGH);

  distance = (duration/2) / 29.1;

  if (distance < 4) {  // Change value 4 to change trigger distance

    goto start;

}

  if (distance >= 200 || distance <= 0){

    Serial.println("Out of range");

  }

  else {

    Serial.print(distance);

    Serial.println(" cm");

  }

  delay(100);

// Put your code from the void loop here

}

The above code might work for you. It is an adapted version of something I found on an instruct able. Read the comments for where to change the distance (I left it at default). There is also a place for you to put your code. Here you can put the contents of the void loop section of your code. Please bear in mind that it will check for a person every time it loops and in doing so way interrupt either part way through your programming or after the person leaves. It will also create a short delay after each check, but this can be removed by commenting out the delay line at the bottom of the code. The code will also send data down a serial connection at 9600 baud as to the distance being measured for debugging. Finally the wiring is as follows: echo to pin 12 trig to pin 13 gnd to gnd and vcc to 5v. If you need more help then post.

Thousand thank you Kidiccurus.

But where the lines which controls the movement servo for each?

Le 7 oct. 2014 à 20:55, kidiccurus <messages@element14.com> a écrit :

 

element14

servomotor (arduino)

réponse de Samuel Doye dans Arduino - Afficher la discussion complète

The above code might work for you. It is an adapted version of something I found on an instruct able. Read the comments for where to change the distance (I left it at default). There is also a place for you to put your code. Here you can put the contents of the void loop section of your code. Please bear in mind that it will check for a person every time it loops and in doing so way interrupt either part way through your programming or after the person leaves. It will also create a short delay after each check, but this can be removed by commenting out the delay line at the bottom of the code. The code will also send data down a serial connection at 9600 baud as to the distance being measured for debugging. Finally the wiring is as follows: echo to pin 12 trig to pin 13 gnd to gnd and vcc to 5v. If you need more help then post.

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Please ensure you have adequate virus protection before you open or detach any documents from this transmission. The Company does not accept any liability for  viruses.

Premier Farnell plc

150 Armley Road

Leeds

LS12 2QQ

Telephone +44 (0) 870 129 8608

Fax +44 (0) 870 129 8610

Registered in England

Company Number 876412

Registered Office: Farnell House, Forge Lane, Leeds LS12 2NE

 

I did not know where and when you wanted the servos to move. If you give me a list of positions in degrees and times for each servo then I will code it in for you, or if you have existing code I can modify it for you. The only thing to note is that it should start and end in the same place. Also what servos are you using, in case I need to look up a data sheet.