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.

Conclusion of the observation

While I was observing people’s action, I was thinking about ‘reactions from the machines.’ Communicating with machines, there is no option. For example, when you charge your card, if machine spew your money, we cannot ask it “Why? What is the problem?” Finally, we repeat same action until machine responds to our actions. When we use devices it might not work as we expected or there can be some mistakes between machines and people. But like these situations, devices cannot accept these unexpected situations. They are just demanding expected actions over and over. In other words, when we use the machine there is no real interactivity; there are only “determined situations” Many people already know their expected action using digital devices and also machines expect that actions. But if there are some problems, we are totally stuck. Machines make us save lots of time, but sometimes we have to be patient to communicate with machines.