Controlling a motor with potentiometer - arduino

Question

I am trying to use my arduino and a potentiometer to make a motor spin one way when the potentiometer is past 0 and spin the other when the potentiometer is past 0 the other direction. The code is working on the SensorValue < 512 side but not on the >507 side.
const int analogInPin = A1; // Analog input pin that the potentiometer is attached to
const int analogOutPin = 9; //
const int analogOutPin_2 = 11; //
int sensorValue = 0; // value read from the pot
int outputValue = 0; // value output to the PWM (analog out)
void setup() {
// initialize serial communications at 9600 bps:
Serial.begin(9600);
}
void loop() {
sensorValue = analogRead(analogInPin);
if (sensorValue < 507) {
analogWrite(analogOutPin, LOW);
outputValue = map(sensorValue, 0, 512, 0, 255);
analogWrite(analogOutPin_2, outputValue);
}
if (512 > sensorValue) {
analogWrite(analogOutPin_2, LOW);
outputValue = map(sensorValue, 512, 1023, 0, 255);
analogWrite(analogOutPin, outputValue);
}
else {
}
delay(2);
}

Answer 1

For solving issues such as this. I recommend a few strategic prints and a for loop to simulate the data range, reveals the following code with a few tweaks works better
const int analogInPin = A1; // Analog input pin that the potentiometer is attached to
const int analogOutPin = 9; //
const int analogOutPin_2 = 11; //
int sensorValue = 0; // value read from the pot
int outputValue = 0; // value output to the PWM (analog out)
void setup() {
// initialize serial communications at 9600 bps:
Serial.begin(9600);
delay(1000);
Serial.println("Begin1");
}
void loop() {
// sensorValue = analogRead(analogInPin);
for (sensorValue = 0; sensorValue < 1024; sensorValue++) {
Serial.print("sensorValue = ");
Serial.print(sensorValue);
if (sensorValue < 507) {
outputValue = map(sensorValue, 0, 512, 255, 0);
Serial.print(" Forward : ");
Serial.print(outputValue);
analogWrite(analogOutPin, LOW);
analogWrite(analogOutPin_2, outputValue);
} else if (512 < sensorValue) {
outputValue = map(sensorValue, 512, 1023, 0, 255);
Serial.print(" Reverse : ");
Serial.print(outputValue);
analogWrite(analogOutPin_2, LOW);
analogWrite(analogOutPin, outputValue);
}
Serial.println();
}
while(1);
delay(1000);
}