So i followed this tutorial of how to make a dual motor arduino robot (Arduino Robot - Motor Control - DarkBlueBit.com).
It had a schematic, and I followed it. The schematic is with the SparkFun controller though, and I have the Pololu one, so some things had to be changed since the pins are different.
So I did this (schematic attached). I know the controller is sparkfun, but they don't have the pololu one, so here's a picture of the pins (https://darkbluebit.com/wp-content/uploads/2016/01/robot-hbridge3.jpg)
// Left motor
const int pinAIN1 = 5; //Direction
const int pinAIN2 = 4; //Direction
const int pinPWMA = 3; //Speed
// Right motor
const int pinBIN1 = 7; //Direction
const int pinBIN2 = 8; //Direction
const int pinPWMB = 9; //Speed
//H-Bridge Standby
const int pinSTBY = 6;
boolean leftMotor = 1;
boolean rightMotor = 0;
void setup() {
pinMode(pinPWMA, OUTPUT);
pinMode(pinAIN1, OUTPUT);
pinMode(pinAIN2, OUTPUT);
pinMode(pinPWMB, OUTPUT);
pinMode(pinBIN1, OUTPUT);
pinMode(pinBIN2, OUTPUT);
pinMode(pinSTBY, OUTPUT);
}
void loop() {
// acceleration
for (int i = 0; i <= 255; i += 5) {
motorDrive(leftMotor, 1, i);
motorDrive(rightMotor, 1, i);
delay(50);
}
delay(1700);
// turn right
motorStop(rightMotor);
delay(1500);
// go ahead
motorDrive(rightMotor, 1, 255);
delay(1000);
// stop
motorStop(leftMotor);
motorStop(rightMotor);
delay(300);
// turn around in place
motorDrive(leftMotor, 0, 255);
motorDrive(rightMotor, 1, 255);
delay(3600);
// stop
motorStop(leftMotor);
motorStop(rightMotor);
delay(300);
// turn left in a circle
motorDrive(leftMotor, 1, 180);
motorDrive(rightMotor, 1, 255);
delay(4000);
// slow down
for (int i = 255; i >= 0; i -= 5) {
motorDrive(leftMotor, 1, i);
motorDrive(rightMotor, 1, i);
delay(55);
}
// stop
motorStop(leftMotor);
motorStop(rightMotor);
delay(10000);
}
/*
Drive a motor:
- motorNumber: 0 left motor, 1 right motor
- moveForward: motor direction (0 reverse, 1 forward)
- motorSpeed: 0 to 255 ---> 0 = stop / 255 = max speed
*/
void motorDrive(boolean motorNumber, boolean moveForward, int motorSpeed) {
boolean pinIn1; //Relates to AIN1 or BIN1 (depending on the motor number specified)
// direction to turn the motor
// clockwise: IN1 = HIGH and IN2 = LOW
// counter-clockwise: IN1 = LOW and IN2 = HIGH
if (moveForward)
pinIn1 = LOW;
else
pinIn1 = HIGH;
// select the motor to turn, set the direction and the speed
if (motorNumber == leftMotor) {
digitalWrite(pinAIN1, pinIn1);
digitalWrite(pinAIN2, !pinIn1);
analogWrite(pinPWMA, motorSpeed);
} else {
digitalWrite(pinBIN1, pinIn1);
digitalWrite(pinBIN2, !pinIn1);
analogWrite(pinPWMB, motorSpeed);
}
// STBY must be high to enable motors
digitalWrite(pinSTBY, HIGH);
}
// Stop the specified motor
void motorStop(boolean motorNumber) {
if (motorNumber == leftMotor) {
digitalWrite(pinAIN1, LOW);
digitalWrite(pinAIN2, LOW);
} else {
digitalWrite(pinBIN1, LOW);
digitalWrite(pinBIN2, LOW);
}
}
I clicked verify, and it doesn't work. Nothing moves and the motors don't spin. The lights are glowing on the arduino, but not a budge. The video he posted has his wires a bit different than the schematic, like the ones from the controller to the diode being in the middle of the 2 instead of the top. I know for sure that the batteries and the motors aren't faulty. The arduino is powered by USB.
Can someone please help me?
