mirror of
https://github.com/KevinMidboe/Arduino.git
synced 2025-10-29 17:40:11 +00:00
57 lines
1.7 KiB
C++
Executable File
57 lines
1.7 KiB
C++
Executable File
/*
|
|
* created by Rui Santos, http://randomnerdtutorials.wordpress.com
|
|
* Control DC motor with Smartphone via bluetooth
|
|
* 2013
|
|
*/
|
|
int motorPin1 = 3; // pin 2 on L293D IC
|
|
int motorPin2 = 4; // pin 7 on L293D IC
|
|
int enablePin = 5; // pin 1 on L293D IC
|
|
int state;
|
|
int flag=0; //makes sure that the serial only prints once the state
|
|
|
|
void setup() {
|
|
// sets the pins as outputs:
|
|
pinMode(motorPin1, OUTPUT);
|
|
pinMode(motorPin2, OUTPUT);
|
|
pinMode(enablePin, OUTPUT);
|
|
// sets enablePin high so that motor can turn on:
|
|
digitalWrite(enablePin, HIGH);
|
|
// initialize serial communication at 9600 bits per second:
|
|
Serial.begin(9600);
|
|
}
|
|
|
|
void loop() {
|
|
//if some date is sent, reads it and saves in state
|
|
if(Serial.available() > 0){
|
|
state = Serial.read();
|
|
flag=0;
|
|
}
|
|
// if the state is '0' the DC motor will turn off
|
|
if (state == '0') {
|
|
digitalWrite(motorPin1, LOW); // set pin 2 on L293D low
|
|
digitalWrite(motorPin2, LOW); // set pin 7 on L293D low
|
|
if(flag == 0){
|
|
Serial.println("Motor: off");
|
|
flag=1;
|
|
}
|
|
}
|
|
// if the state is '1' the motor will turn right
|
|
else if (state == '1') {
|
|
digitalWrite(motorPin1, LOW); // set pin 2 on L293D low
|
|
digitalWrite(motorPin2, HIGH); // set pin 7 on L293D high
|
|
if(flag == 0){
|
|
Serial.println("Motor: right");
|
|
flag=1;
|
|
}
|
|
}
|
|
// if the state is '2' the motor will turn left
|
|
else if (state == '2') {
|
|
digitalWrite(motorPin1, HIGH); // set pin 2 on L293D high
|
|
digitalWrite(motorPin2, LOW); // set pin 7 on L293D low
|
|
if(flag == 0){
|
|
Serial.println("Motor: left");
|
|
flag=1;
|
|
}
|
|
}
|
|
}
|