DC motor control with digital outputs

Task:

1. Connect the DC motor to Digital Output D7 and D6.
2. Write the program and check all the combinations of digital outputs; 00, 01, 10 and 11. First combination is shown in [@lst:190_DC_Motor_Control_with_Digital_Outputs]

void setup()
{
  pinMode(7, OUTPUT);
  pinMode(6, OUTPUT);
  // D7=0, D6=0
  digitalWrite(7, LOW);
  digitalWrite(0, LOW);
  delay(3000);
  // Write other combinations here...

}
void loop()
{

}

: DC Motor Control with Digital Outputs. {#lst:190_DC_Motor_Control_with_Digital_Outputs}

1. For each combination of digital outputs mark the state of the motor (fulfill the [@tbl:motor_combo ]).

D7	D6	Motor rotation
0	0
0	1
1	0
1	1

Table: All combinations of the states of motor’s connectors. {#tbl:motor_combo}

Questions:

1. Try to stop the shaft of the DC motor for a short time and try to remember how difficult it is?
2. Why does motors’ shaft not spinning if the digital output state are 1 and 1.

Summary

The motor's shaft is spinning according to the direction of the electric current trough the motor.
The torque is weak.

Issues