update
Thanks to every on site,especially to Duane Degan that walk through link was spot on help alot and BDK6 for battery comment yes it was smoke detector battery and the coment on the ENA inputs
Sorry about code i tried to add it as file would not let me
heres completed code sorted problem out bit code and my 9v ni-mh was not man enough
iv included copy of code… few pictures…
the idea im playing with is i got a small 6 leg on/off crawler robot for christams…want connect it to one of the smaller arduinos nano or pro mini … to have control of it
Code
#define ENA 5 //enable A on pin 5 (needs to be a pwm pin)
#define ENB 3 //enable B on pin 3 (needs to be a pwm pin)
#define IN1 2 //IN1 on pin 2 conrtols one side of bridge A
#define IN2 4 //IN2 on pin 4 controls other side of A
#define IN3 6 //IN3 on pin 6 conrtols one side of bridge B
#define IN4 7 //IN4 on pin 7 controls other side of B
void setup()
{
//set all of the outputs
pinMode(ENA, OUTPUT);
pinMode(ENB, OUTPUT);
pinMode(IN1, OUTPUT);
pinMode(IN2, OUTPUT);
pinMode(IN3, OUTPUT);
pinMode(IN4, OUTPUT);
}
void loop()
{
motorA(1, 15); //have motor A turn clockwise at 15% speed
delay(5000); //let motor A run for 5 seconds
motorA(3, 100); //brake motor A with 100% braking power
motorB(1, 15); //have motor B turn clockwise at 15% speed
delay(5000); //let motor B run for 5 seconds
//have motor A turn counter-clockwise at 15% speed
motorA(2, 15);
delay(5000); //let motor A and motor B run for 5 seconds
motorB(3, 50); //brake motor B with 50% braking power
motorA(0, 100); //let motor A coast
delay(5000); //wait 5 seconds
}
//****************** Motor A control *
void motorA(int mode, int percent)
{
//change the percentage range of 0 -> 100 into the PWM
//range of 0 -> 255 using the map function
int duty = map(percent, 0, 100, 0, 255);
switch(mode)
{
case 0: //disable/coast
digitalWrite(ENA, LOW); //set enable low to disable A
break;
case 1: //turn clockwise
//setting IN1 high connects motor lead 1 to +voltage
digitalWrite(IN1, HIGH);
//setting IN2 low connects motor lead 2 to ground
digitalWrite(IN2, LOW);
//use pwm to control motor speed through enable pin
analogWrite(ENA, duty);
break;
case 2: //turn counter-clockwise
//setting IN1 low connects motor lead 1 to ground
digitalWrite(IN1, LOW);
//setting IN2 high connects motor lead 2 to +voltage
digitalWrite(IN2, HIGH);
//use pwm to control motor speed through enable pin
analogWrite(ENA, duty);
break;
case 3: //brake motor
//setting IN1 low connects motor lead 1 to ground
digitalWrite(IN1, LOW);
//setting IN2 high connects motor lead 2 to ground
digitalWrite(IN2, LOW);
//use pwm to control motor braking power
//through enable pin
analogWrite(ENA, duty);
break;
}
}
// Motor B control *******************
void motorB(int mode, int percent)
{
//change the percentage range of 0 -> 100 into the PWM
//range of 0 -> 255 using the map function
int duty = map(percent, 0, 100, 0, 255);
switch(mode)
{
case 0: //disable/coast
digitalWrite(ENB, LOW); //set enable low to disable B
break;
case 1: //turn clockwise
//setting IN3 high connects motor lead 1 to +voltage
digitalWrite(IN3, HIGH);
//setting IN4 low connects motor lead 2 to ground
digitalWrite(IN4, LOW);
//use pwm to control motor speed through enable pin
analogWrite(ENB, duty);
break;
case 2: //turn counter-clockwise
//setting IN3 low connects motor lead 1 to ground
digitalWrite(IN3, LOW);
//setting IN4 high connects motor lead 2 to +voltage
digitalWrite(IN4, HIGH);
//use pwm to control motor speed through enable pin
analogWrite(ENB, duty);
break;
case 3: //brake motor
//setting IN3 low connects motor lead 1 to ground
digitalWrite(IN3, LOW);
//setting IN4 high connects motor lead 2 to ground
digitalWrite(IN4, LOW);
//use pwm to control motor braking power
//through enable pin
analogWrite(ENB, duty);
break;
}
}
