Hi everybody. Can anybody help me verify this code is correct? I'm working on running a DC motor via an Arduino Nano, and cannot get it to run for the life of me. I have verified that the Nano works, the L298N works, and the rotary encoder works. I re-soldered everything and checked for proper continuity, so I am fairly confident that is not the issue. The only other thing I can think of is that my code is wrong. I am new to electronics, so I'm hoping this is a rookie mistake and not faulty components/bad connections.
One thing that was brought to my attention is that pin 2 is not a PWM pin on the nano. Should I move the DC motor connection (currently soldered to A0) to a PWM pin and change the code accordingly?
[code]
const int pwm = 2 ; //initializing pin 2 as pwm
const int in_1 = 8 ;
const int in_2 = 9 ;
//For providing logic to L298 IC to choose the direction of the DC motor
void setup()
{
pinMode(pwm, OUTPUT) ; //we have to set PWM pin as output
pinMode(in_1, OUTPUT) ; //Logic pins are also set as output
pinMode(in_2, OUTPUT) ;
}
void loop()
{
//For Clock wise motion , in_1 = High , in_2 = Low
digitalWrite(in_1, HIGH) ;
digitalWrite(in_2, LOW) ;
analogWrite(pwm, 255) ;
/*setting pwm of the motor to 255
we can change the speed of rotaion
by chaning pwm input but we are only
using arduino so we are using higest
value to driver the motor */
//Clockwise for 3 secs
delay(3000) ;
//For brake
digitalWrite(in_1, HIGH) ;
digitalWrite(in_2, HIGH) ;
delay(1000) ;
//For Anti Clock-wise motion - IN_1 = LOW , IN_2 = HIGH
digitalWrite(in_1, LOW) ;
digitalWrite(in_2, HIGH) ;
delay(3000) ;
//For brake
digitalWrite(in_1, HIGH) ;
digitalWrite(in_2, HIGH) ;
delay(1000) ;
}
[/code]
Hardware wise, one thing I'm unsure about is if these jumpers should be on or not. They are currently on as I am using a 12V power supply.
Here is the schematic, which I am using a perfboard. I can post a picture of the connections if needed, but obviously it's a bit messy and probably not helpful. I did make sure the encoder, arduino, and l298N share a common ground and then the one off the 10K resistor is grounded by itself. One question on this, is the schematic telling me that they all share a common ground, with ALSO needs to be grounded by itself (to the perfboard, in this case)?
