Notes

int motor2pin1 = 4;
int motor2pin2 = 5;
int switchPin = 2;
bool switchState = false; // initialize switch state to released
bool lastSwitchState = false; // initialize last switch state to released
bool motorDirection = false; // initialize motor direction to false (opposite)

void setup() {
pinMode(motor2pin1, OUTPUT);
pinMode(motor2pin2, OUTPUT);
pinMode(switchPin, INPUT_PULLUP);
}

void loop() {
// Read the current state of the switch
switchState = digitalRead(switchPin) == LOW;

// Check if the switch state has changed
if (switchState != lastSwitchState) {
// Update the last switch state variable
lastSwitchState = switchState;

// If switch state is pressed, toggle motor direction
if (switchState == true) {
motorDirection = !motorDirection;
}
}

// Set motor direction based on motorDirection variable
if (motorDirection) {
digitalWrite(motor2pin1, LOW);
digitalWrite(motor2pin2, HIGH);
} else {
digitalWrite(motor2pin1, HIGH);
digitalWrite(motor2pin2, LOW);
}

// Delay for a short time to debounce the switch
delay(10);
}