Arduino Code Download
Camera Slider Bluetooth , Android App
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Arduino Pins Vs Bluetooth Module HC-05
Tx = Rx
Rx = Tx
5V = 5V VCC
GND = GND
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Arduino Pins Vs Stepper Motor Driver
Arduino D2 = Step Pulse
Arduino D3 = Direction Pin
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Required Components
Arduino Nano or Uno
HC-05 or HC-06 Bluetooth Module
Stepper Motor Driver with Step and Direction Input
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Special Thanks to AHMED IBRAHIM for Arduino Code and Android App
App - MIT Inventor
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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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