Hello Community,
you can Answer in English and German. Thanks
i want to build a small RC Car for a school project.
It's controlled with an HC-05 and the moters with an L298N Motor Board.
Here is my circuit:
The Problem is: When i Power everything with 5V its working, you can connect your phone with the bluetooth device, you can steer and go forwards and backwards and you can turn the lights on and off, but the voltage drops when i want to drive and steer at the same time. So there should not be a Problem with the code.
The L298N is specified to work with 7-12V , so im using a bigger battery with 7.2V or 11.1V. When the new Powersource is connected, everything turns on and you can connect your phone with the bluetooth device, but now nothing works, you can press any button on your mobile phone but nothing happened.
If anyone has an idea why it might be, write to me. Thanks!
Code:
#include <Servo.h>
Servo servo1;
#define SERVOMIN 30
#define SERVOMID 90
#define SERVOMAX 150
#define TurnLeft servo1.write(SERVOMIN)
#define TurnMid servo1.write(SERVOMID)
#define TurnRight servo1.write(SERVOMAX)
int motorA1 = 5;
int motorA2 = 6;
int motorB1 = 9;
int motorB2 = 10;
int buzzer = 4;
int light1 = 12;
int light2 = 13;
int light3 = 11;
int state;
int vSpeed;
char ch;
int pos = 0;
void setup() {
servo1.attach(3);
pinMode(motorA1, OUTPUT);
pinMode(motorA2, OUTPUT);
pinMode(motorB1, OUTPUT);
pinMode(motorB2, OUTPUT);
pinMode(light1, OUTPUT);
pinMode(light2, OUTPUT);
pinMode(light3, OUTPUT);
// Initialize serial communication at 9600 bits per second:
Serial.begin(9600);
}
void loop() {
//Save income data to variable 'state'
if(Serial.available() > 0){
state = Serial.read();
ch = state;
// Serial.print("state:");Serial.print(state);
// Serial.print(" ch:");Serial.println(ch);
}
if(state == '0')
vSpeed = 0;
if(state == '1')
vSpeed = 120;
if(state == '2')
vSpeed = 140;
if(state == '3')
vSpeed = 160;
if(state == '4')
vSpeed = 180;
if(state == '5')
vSpeed = 200;
if(state == '6')
vSpeed = 210;
if(state == '7')
vSpeed = 220;
if(state == '8')
vSpeed = 230;
if(state == '9')
vSpeed = 240;
if(state == 'q')
vSpeed = 255;
/***********************Forward****************************/
//If state is equal with number 'F', car will go forward!
if (state == 'F') {
analogWrite(motorA1, vSpeed); analogWrite(motorA2, 0);
TurnMid;
}
/***********************Backward****************************/
//If state is equal with number 'B', car will go backward
else if (state == 'B') {
analogWrite(motorA1, 0); analogWrite(motorA2, vSpeed);
TurnMid;
}
/***************************Right*****************************/
//If state is equal with number 'R', wheels will turn right
else if (state == 'R') {
analogWrite(motorA1, 0); analogWrite(motorA2, 0);
TurnRight;
}
/***************************Left*****************************/
//If state is equal with number 'L', wheels will turn left
else if (state == 'L') {
analogWrite(motorA1, 0); analogWrite(motorA2, 0);
TurnLeft;
}
/**********************Forward Right************************/
//If state is equal with number 'I', car will go forward right
else if (state == 'I') {
analogWrite(motorA1, vSpeed); analogWrite(motorA2, 0);
TurnRight;
}
/**********************Forward Left************************/
//If state is equal with number 'G', car will go forward left
else if (state == 'G') {
analogWrite(motorA1, vSpeed); analogWrite(motorA2, 0);
TurnLeft;
}
/**********************Backward Right************************/
//If state is equal with number 'J', car will go backward right
else if (state == 'J') {
analogWrite(motorA1, 0); analogWrite(motorA2, vSpeed);
TurnRight;
}
/**********************Backward Left************************/
//If state is equal with number 'H', car will go backward left
else if (state == 'H') {
analogWrite(motorA1, 0); analogWrite(motorA2, vSpeed);
TurnLeft;
}
/***************************Stop*****************************/
//If state is equal with number 'S', stop the car
else if (state == 'S') {
analogWrite(motorA1, 0); analogWrite(motorA2, 0);
analogWrite(motorB1, 0); analogWrite(motorB2, 0);
}
/***************************light1*****************************/
//If state is equal with letter 'W', light1 turn on
if (state == 'W') {
digitalWrite(light1, HIGH);
}
if (state == 'w') {
digitalWrite(light1, LOW);
}
/***************************light2*****************************/
//If state is equal with letter 'U', light2 turn on
if (state == 'U') {
digitalWrite(light2, HIGH);
}
if (state == 'u') {
digitalWrite(light2, LOW);
}
/***************************light3*****************************/
//If state is equal with letter 'X', light3 turn on
if (state == 'X') {
digitalWrite(light3, HIGH);
}
if (state == 'x') {
digitalWrite(light3, LOW);
}
/***************************buzzer*****************************/
//If state is equal with letter 'N', buzzer turn on
if (state == 'V') {
tone(buzzer, 500);
}
if (state == 'v') {
noTone(buzzer);
}
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