Steve Learning about Arduino Microcontrollers

Tell complete story of circuit. (button) (potentiometer)

First we learnt how to make simple things like LEDs

Resistor Value: 2000 Ohms The light bulb on this is the least bright because it has the most resistance. So, it makes sense that this LED is the least bright out of the three.

Resistor Value: 1000 Ohms The brightness is almost as bright as the on with resistor 3. That should not be becuase this resistor has a greater resistor value. It may be because I am using my hand to conduct some electricity. Therefore, bypassing the resistor. I have no idea this is just a guess.

Resistor Value: 470 Ohms The brightness is almost as bright as the on with resistor 2 which is weird becuase resistor 2 has a greater resistor value and the bulb connected to resistor 2 should be less bright compared to this bulb. Again, it may be becuase I did not connect the wires properly on this circuit which resulted on the electricity not flowing properly. .

For this one, I followed the instructions and got the results I expected when I turned the knob. Turning it to one side dimmed the light. Turning it to the other side increased the brightness.

At first, I thought the difference was it was brighter this time. However, after a demonstration, I realised that the direction to dim the light and increase the brightness has changed. That was very hard to spot.

we learnt the basics. Resistors, potentiometers, and drawing diagrams