Lab_03 | This is an Analog!

When I tried to light LEDs in a bright place, it looked like turn-on and turn-off. So I tried to light LEDs in a dark place to show that these were getting brighter gradually.

Lab_03 | My hand is a switch

Here is the video.

Lab_03 | Lighting!

When I folded my hand, LEDs lighted very bright.


And I unfoled my hand, LEDs dimmed gradually,
finally LEDs lost their light.

Lab_03 | Try to connect Variable Resistors

After I tried to use the ptentiometer, I wanted to use other variable resistors. So I bought a flex sensor.

To connect a flex sensor to a breadboar, I soldered wires to a flex sensor. This is my ugly soldering.


I connected a flex sensor to a breadboard insted of a potentiometer.
Green wire is a flex sensor in this picture. I removed a resistor
and I added two more LEDs.


I didn't need to change the program and connection between the arduino and the breadboard.


These are my whole circuit pictures.

Lab_03 | Turn the potentiometer

After I uploaded program to the arduino,
When I turned the pot, the LED lighted or dimmed.

Lab_03 |Analog In

I connected pontentiometer to anlog in pin 0.


And I connected an LED to PWM 9 pin as a picture.


I put an LED and 220 resistance on a breadboard.


This is whole circuit with an arduino.