Hello! i bought HC05 BT module for one of my projects, i used it before and I had no problem working with it but this module is reciving data (TX led on arduino nano lights up when i send something) and printing it on serial monitor. But led doesnt turn on, i am using this simple code
#define ledPin 6
void setup() {
pinMode(ledPin, OUTPUT);
digitalWrite(ledPin, LOW);
Serial.begin(9600); // Default communication rate of the Bluetooth module
}
void loop() {
if(Serial.read() == '1'){
digitalWrite(9, HIGH);
}
else if(Serial.read() == '0'){
digitalWrite(9,LOW);}
}
and this schematic:
This is Serial monitor:
I tried changing code and schematics, but it doesnt even read data now
(i also tried to upload code from project that worked with anoher bluetooth module)
#include <SoftwareSerial.h>
#define rxPin 2
#define txPin 3
SoftwareSerial mySerial(rxPin, txPin); // RX, TX
char myChar ;
int motor1pin1 = 5;
int motor1pin2 = 6;
int motor2pin1 = 7;
int motor2pin2 = 8;
void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
Serial.println("Goodnight moon!");
pinMode(9,OUTPUT);
pinMode(10,OUTPUT);
pinMode(motor1pin1, OUTPUT);
pinMode(motor1pin2, OUTPUT);
pinMode(motor2pin1, OUTPUT);
pinMode(motor2pin2, OUTPUT);
mySerial.begin(9600);
mySerial.println("Hello, world?");
}
void loop() {
// put your main code here, to run repeatedly:
Serial.print("Hello");
while(mySerial.available()){
myChar = mySerial.read();
Serial.print(myChar);
if(myChar == '1'){
digitalWrite(9, HIGH);
}
else if(myChar == '0'){
digitalWrite(9,LOW);}
}
while(Serial.available()){
myChar = Serial.read();}
if(myChar == 'F'){ //move forward(all motors rotate in forward direction)
forward();
}
else if(myChar == 'B'){ //move reverse (all motors rotate in reverse direction)
Backwards();
}
else if(myChar == 'L'){ //turn right (left side motors rotate in forward direction, right side motors rotate in reverse direction for 100ms & stop)
Right();
}
else if(myChar == 'R'){ //turn left (right side motors rotate in forward direction, left side motors rotate in reverse direction for 100ms & stop)
Left();
}
else if(myChar == 'S'){ //STOP (all motors stop)
stop_engine();
}
delay(100);
}
void forward(){
digitalWrite(motor1pin1, HIGH);
digitalWrite(motor1pin2, LOW);
digitalWrite(motor2pin1, HIGH);
digitalWrite(motor2pin2, LOW);
delay(1000);
}
void stop_engine(){
digitalWrite(motor1pin1, LOW);
digitalWrite(motor1pin2, LOW);
digitalWrite(motor2pin1, LOW);
digitalWrite(motor2pin2, LOW);
delay(200);
}
void Backwards(){
digitalWrite(motor1pin1, LOW);
digitalWrite(motor1pin2, HIGH);
digitalWrite(motor2pin1, LOW);
digitalWrite(motor2pin2, HIGH);
delay(200);
}
void Left(){
digitalWrite(motor1pin1, LOW);
digitalWrite(motor1pin2, LOW);
digitalWrite(motor2pin1, LOW);
digitalWrite(motor2pin2, HIGH );
delay(200);
}
void Right(){
digitalWrite(motor1pin1, HIGH);
digitalWrite(motor1pin2, LOW);
digitalWrite(motor2pin1, LOW);
digitalWrite(motor2pin2, LOW);
delay(200);
}