DRV8838: Control Method

Hi Firaz,

Since the motor is rotating, your connections to SLP, EN, OUT1, and OUT2 appear to be correct.

Please double check your connection to the PH pin. The PH pin must change from low to high or high to low to rotate in the opposite direction.

Ty so much for your reply !! I'll check and update you.

void setup() {
pinMode(8,OUTPUT); //Phase
pinMode(9,OUTPUT); //Enable
pinMode(10,OUTPUT);//Sleep
Serial.begin(9600);
}

void loop() {
digitalWrite(8, LOW);
digitalWrite(10, LOW);
analogWrite(9, 255);
Serial.println("ONE");
delay(2000);

digitalWrite(8, LOW);
digitalWrite(10, HIGH);
analogWrite(9, 255);
Serial.println("TWO");
delay(2000); //Only This Condition is Working

digitalWrite(8, HIGH);
digitalWrite(10, LOW);
analogWrite(9, 255);
Serial.println("THREE");
delay(2000);

}

This is my code only second condition is working !!! is it IC issue ???

Hi Fariz,

Please try changing "digitalWrite(10, LOW);" to "digitalWrite(10, HIGH);" in condition THREE

It appears the device has been placed into sleep mode in the third condition.

No change sir !!

Hi Firaz,

For condition three, what is meant by no change?
Does the motor spin in the wrong direction?
Does the motor remain still?

If possible, please disconnect the motor and report the input and output voltages for each condition. The measurements should be taken as close to the device pin as possible.

If not possible, please report the input and output voltages for each condition.

Also if your power supply reports current, please provide the current.

Hi Firaz,

Were you able to get the motor spinning in both directions? If so, what did you find?

Thank so much for your quick response !! I changed the ic

Hi Firaz,

Did changing the ic correct the problem?

I tried everything....I think module is not working....else ti selling wrong part

Hi Firaz,

The DRV8838 should operate in both directions. Please answer the questions asked previously. Scope shots of the outputs would also help.

For condition three, what is meant by no change?
Does the motor spin in the wrong direction?
Does the motor remain still?

If possible, please disconnect the motor and report the input and output voltages for each condition. The measurements should be taken as close to the device pin as possible.

If not possible, please report the input and output voltages for each condition.

Also if your power supply reports current, please provide the current.

If you reverse the motor wires, does Condition THREE work and Condition TWO stop working?

Hey please check the conversations...above !! I already told u I tried everything...