I am using an Arduino UNO. My configuration from 5V power input pin to ground pin is as follows:
5V power port Arduino->negative rail of BB->-10k potentiometer*->green LED->330 Ohm resistor-> positive rail of BB->ground port arduino.
*potentiometer (middle pin)-> Analog input A0 arduino
When i run the 'ReadAnalogVoltage' beginner example program and switch on the serial monitor i receive voltage readings and the led is lit. When i turn the dial on the potentiometer, the voltage reading changes from min 0.00V to 2.6V(ish) but no dimming or brightening is observed by the LED.
(not) My potentiometer has three pins in a triangular orientation (like a British plug) which i have plugged directly into the bread board.
why am i not receiving a voltage reading between 0-5V readings and why don't i observe a dimming effect?