Week 5 - Journal

I used a 12 volt adaptor I had before

as I use an old 12 v fan that I have 

and it was amazing I used it on my desk because this summer was so hot 

and used the 1k ohm resistor with the led to prevent it from frying

for the usage of the power switch 

It works to cut the current and connect it
So I connected it to the power source is series as shown in the simulation
so when I let it on it powers the 2 devices at the same time

Video  of the simulation

same for the fan 

after connecting the circuit I waxed the breadboard on the ground

and made to holes on the side to put the on-off switch
and the female plug adapter 

and here is the connection inside the device

the final outcome

the challenge was that  I had a 12v adaptor to power the 12 fan

but the problem was the led and led can be powered with 5 volts 

with 220ohm resistance ,after I connected the 12 v adaptor

The first led got burned 

Then I noticed that it's cccurrent Was far more than the recommended 

I measured it with multimeter and to ensure it 

so I used the 1k ohm with the led and it worked perfectly

I learned the importance of power management .

Using the parallel connection to connect the LED and the fan .

And the importance of the switch , as completion and safety for the project