analogRead wont return full range

Other Hardware Sensors
1

Using a potentiometer I get the range 505 - 1023 instead of 0 - 1023. Very confused, unsure what could be wrong.

int analogReadValue;
void setup() {
Serial.begin(9600);

}
void loop() {

analogReadValue = analogRead(A1);
Serial.println(analogReadValue);
delay(500);
}

2

Probably your wiring. You seem to go from half to full voltage instead of starting at 0.

3

Show us a good schematic of your circuit.
Show us a good image of your wiring.

4

Apart from checking the wiring as suggested by both the replies above, you should check the pot with your ohmmeter.

The resistance across wiper and one end should show a movement from 0 ohms to whatever the maximum resistance is as you turn it.