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  • Writer's pictureRAJ SHARMA

Bluetooth Camera Slider Controller with Android App

Updated: Jun 16


Arduino Code Download



Bluetooth Camera Slider Controller with Android App Arduino Code
.zip
Download ZIP • 2KB

Camera Slider Bluetooth , Android App


Bluetooth Camera Slider Controller with Android App
.zip
Download ZIP • 3.34MB

............................................................................................................................................................

Arduino Pins Vs Bluetooth Module HC-05

Tx = Rx

Rx = Tx

5V = 5V VCC

GND = GND

............................................................................................................................................................

Arduino Pins Vs Stepper Motor Driver

Arduino D2 = Step Pulse

Arduino D3 = Direction Pin

............................................................................................................................................................

Required Components

Arduino Nano or Uno

HC-05 or HC-06 Bluetooth Module

Stepper Motor Driver with Step and Direction Input

............................................................................................................................................................

Special Thanks to AHMED IBRAHIM for Arduino Code and Android App


App - MIT Inventor

............................................................................................................................................................

Video




Arduino Code


#include <MultiStepper.h>

#include <AccelStepper.h>


#define stepPin 2

#define dirPin 3


bool homingPositionFlag = false;

int startupSetupFlag = 0;

bool delayedStart = false;


int incomingData = 0;

int movementDistance = 50;

long steps = 0; //50cm rail by default @1/8 microstepping.

int microStepResolution = 0; //4 or 16

long railLength = 0;

int sliderSpeed = 10;


AccelStepper stepper(AccelStepper::DRIVER, stepPin, dirPin); //create an object. the pin "2" is the step pin, "3" is the direction pin.


void setup() {

pinMode(stepPin, OUTPUT);

pinMode(dirPin, OUTPUT);

Serial.begin(9600);


stepper.setMaxSpeed(10.00); //The fastest motor speed that can be reliably supported is about 4000 steps per second at a clock frequency of 16 MHz on Arduino such as Uno

stepper.setAcceleration(500.00); //1600 (40%) (Medium Acceleration rate)


while (startupSetupFlag < 3) {

if (Serial.available() > 1) {

unsigned int dataOne = Serial.read();

unsigned int dataOne1 = Serial.read();

unsigned int incomingData = (dataOne1 * 256) + dataOne;


//**************************************************************Motor Homing Part**************************************************

if (incomingData == 16) { //left end homing position.

stepper.setCurrentPosition(steps);

homingPositionFlag = false;

startupSetupFlag++;

} else if (incomingData == 17) { //right end homing position.

stepper.setCurrentPosition(-(steps));

homingPositionFlag = true;

startupSetupFlag++;

}

//**************************************************************microstep resolution Part**************************************************

if (incomingData == 18) {

microStepResolution = 4; //50cm rail length @1/4 microstep resolution.

startupSetupFlag++;

} else if (incomingData == 19) {

microStepResolution = 16; //50cm rail length @1/16 microstep resolution.

startupSetupFlag++;

}


if (incomingData >= 1301 && incomingData <= 2300) {

railLength = incomingData - 1300; //from raw data to cm.

if (microStepResolution == 4) {

steps = ((6100L * railLength) / 50L);

startupSetupFlag++;

}

else if (microStepResolution == 16) {

steps = ((25000L * railLength) / 50L);

startupSetupFlag++;

}

}

}

//Serial.println(startupSetupFlag);

}

/*

* *********** *********** **********For Debugging Purposes* *********** *********** **********

Serial.print("rail length: ");

Serial.print(railLength);

Serial.print(" number of steps: ");

Serial.print(steps);

Serial.print(" Homing position: ");

Serial.print(stepper.currentPosition());

Serial.print(" microstep resolution: ");

Serial.println(microStepResolution);*/

}


void loop() {


if (Serial.available() > 1) {


unsigned int dataOne = Serial.read();

unsigned int dataOne1 = Serial.read();

unsigned int incomingData = (dataOne1 * 256) + dataOne;

//Serial.print("raw data: ");

//Serial.println(incomingData);


//**************************************************************Motor Control Part**************************************************

if (incomingData == 1 && stepper.isRunning() == false && stepper.currentPosition() != 6050 && homingPositionFlag == true) {

if (delayedStart == true) { //use millis to delay 15 seconds.

delay(15000); //wait 15 seconds.

}

stepper.setCurrentPosition(0);

stepper.moveTo(steps); //from end to end (@ 1/4 step).

homingPositionFlag = false;


/*Serial.print("rail length: ");

Serial.print(railLength);

Serial.print(" number of steps: ");

Serial.print(steps);

Serial.print(" Homing position: ");

Serial.print(stepper.currentPosition());

Serial.print(" microstep resolution: ");

Serial.println(microStepResolution);*/

}


else if (incomingData == 2 && stepper.isRunning() == false && stepper.currentPosition() != -6050 && homingPositionFlag == false) {

if (delayedStart == true) { //use millis to delay 15 seconds.

delay(15000); //wait 15 seconds.

}

stepper.setCurrentPosition(0);

stepper.moveTo(-(steps)); //from end to end (@ 1/4 step).

homingPositionFlag = true;


/*Serial.print("rail length: ");

Serial.print(railLength);

Serial.print(" number of steps: ");

Serial.print(steps);

Serial.print(" Homing position: ");

Serial.print(stepper.currentPosition());

Serial.print(" microstep resolution: ");

Serial.println(microStepResolution);*/

}


else if (incomingData == 3 && stepper.isRunning() == true) {

homing();

}


//**************************************************************Set Max. Speed Part**************************************************

else if (incomingData >= 5001 && incomingData <= 9000) {

sliderSpeed = incomingData - 5000;

stepper.setMaxSpeed(sliderSpeed);

}


//**************************************************************Set Delayed Start Part**************************************************

else if (incomingData == 7) { //delayed start (15 seconds) is checked "true"

delayedStart = true;

}

else if (incomingData == 8) { //delayed start (15 seconds) is not checked "false"

delayedStart = false;

}


//**************************************************************Set movement distance Part**************************************************

else if (incomingData >= 201 && incomingData <= 1200) { //convertin from rail length into number of steps. (upto 10 meters)

movementDistance = incomingData - 200; //from raw data to cm.

if (microStepResolution == 4) {

steps = ((6100L * movementDistance) / 50L);

}

else if (microStepResolution == 16) {

steps = ((25000L * movementDistance) / 50L);

}

/*Serial.print("rail length: ");

Serial.print(movementDistance);

Serial.print(" number of steps: ");

Serial.println(steps);*/

}


//**************************************************************Set Acceleration Part**************************************************

else if (incomingData == 11 && stepper.isRunning() == false) { //HIGH

stepper.setAcceleration(3000);

}


else if (incomingData == 12 && stepper.isRunning() == false) { //Medium

stepper.setAcceleration(1000);

}


else if (incomingData == 13 && stepper.isRunning() == false) { //Low

stepper.setAcceleration(500);

}


else if (incomingData == 14 && stepper.isRunning() == false) { //Very High

stepper.setAcceleration(4000);

}


else if (incomingData == 15 && stepper.isRunning() == false) { //Very Low

stepper.setAcceleration(10);

}

}

stepper.run();

}


void homing() {

if (stepper.currentPosition() > 0) {

homingPositionFlag = true;

} else {

homingPositionFlag = false;

}

stepper.moveTo(0);

}






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