Arduino board type used in this session is Arduino Uno R3 DIP/SMD CH340
Below is the description of wiring and code in Arduino to assemble a Bluetooth RC car using android smartphone:
- Tested the motor dc result both of wheel works (can spin forward and or backward). power direct from the battery.
- Tested HC-05 bluetooth moduled. The phone can paired the bluetooth module.
- Tested out1 out2 out3 and out4 on L298N using direct power from the battery the wheel spinning (forward and or backward).
- The code for the Bluetooth rc simple car used below as described.
The car failed to move (forward, backward, turn left/right). how to make the motor dc and or the motor stepper works remotely. thank you
#include
SoftwareSerial mySerial(12, 13); // RX, TX
#define m1 3
#define m2 5
#define m3 9
#define m4 10
int data=0,kec=0;
boolean forward=true;
int fast[11]={0,80,100,120,140,160,180,200,220,240,255};
void setup()
{
pinMode(m1,OUTPUT);
pinMode(m2,OUTPUT);
pinMode(m3,OUTPUT);
pinMode(m4,OUTPUT);
mySerial.begin(9600);
}
void motorOut(unsigned char lpwm, unsigned char rpwm, boolean arrow){
if(arrow==false){
digitalWrite(m3,HIGH);
digitalWrite(m1,LOW);
analogWrite(m4,255-lpwm);
analogWrite(m2,rpwm);
}
else{
digitalWrite(m3,LOW);
digitalWrite(m1,HIGH);
analogWrite(m4,lpwm);
analogWrite(m2,255-rpwm);
}
}
void loop(){
if(mySerial.available()>0){
data=mySerial.read();
if (data =='0') { kec=0;}
else if (data =='1') { kec=1;}
else if (data =='2') { kec=2;}
else if (data =='3') { kec=3;}
else if (data =='4') { kec=4;}
else if (data =='5') { kec=5;}
else if (data =='6') { kec=6;}
else if (data =='7') { kec=7;}
else if (data =='8') { kec=8;}
else if (data =='9') { kec=9;}
else if (data =='q') {kec=10;}
//S= Stop
if (data == 'S')
{ motorOut(0,0,false); }
//F=Forward
if (data=='F')
{ motorOut(fast[kec],fast[kec],true); }
//I=turn right forward
if (data=='I')
{ motorOut(fast[kec],((fast[kec])/2),true);}
//G=turn left forward
if (data=='G')
{ motorOut(((fast[kec])/2),fast[kec],true); }
//R=turn right
if(data=='R')
{ motorOut(fast[kec],0,true); }
//L=turn left
if(data=='L')
{ motorOut(0,fast[kec],true); }
//B=back
if(data=='B')
{ motorOut(fast[kec],fast[kec],false); }
//H=turn left back
if (data=='H')
{ motorOut(((fast[kec])/2),fast[kec],false); }
//turn right back
if (data=='J')
{ motorOut(fast[kec],((fast[kec])/2),false); }
}
}
if-else ifstatements, use a simpleswitch(data){ case '0':– chrisl Jul 9 '18 at 13:17mySerial? Can you confirm, that the correct data is actually received? Maybe echo it back to the source. If this doesn't work, your serial connection doesn't work (maybe because the HC-05 isn't really connected). If it works, try to drive the motor through the driver, by connecting the corresponding pins to 5V. If this doesn't work, your driver connection is not correct. You should provide a schematic instead of photos. – chrisl Jul 9 '18 at 13:26