I was quite nervous about what I was going to do. I spent a lot
of time trying to get all those parts together: NYU computer center,
Radio Shack at 9th St, 14th St, and Newport Mall, I bought stuff
and returned them....Finally, I brought what I got to the shop,
sat down tightly on my seat, and, what's next?
At first it
was in a mess, I didn't know where to start. Then I got to know
this circuit thing and started to have fun with it.
At first I
spent a lot of time soldering. I just couldn't do it right. Then
I happened to have this chance to see someone soldering, then
I got the idea (Sorry I forget your name).
What I did
originally was to heat up the soldering iron and started to melt
some solder on it, and then I pointed it to what I wanted to solder
together. And it always turned out the melted solder attached
to the iron instead of the wires and it formed a very ugly shape.
What's worse is it was not clinging together so it got pulled
Later I found
out, before I solder wires together, I use the iron to heat up
what I want to solder, and then I put the solder near it, so that
as soon as it melts, I can apply it to the wires immediately.
with a circuit without anything on it. There were only regulators,
lines leading in power, and lines that go around the board, a
closed circuit. Then I put the switch into the circuit, of course
between the "in" and "out" points. Where the
"out" point of the switch went was the place I wanted
to build other circuits. So I lead it out to 2 directions, to
make a parallel connection. Each will have 220 ohm resistors and
a LED. This one was simple; as long as they formed a closed circuit
separately, it worked. When the power was on, they both lightened;
when it was off, the lights went off.
control the LEDs on the left side with the switch
Then I saw Yuriko using a variable resistor as a switch between
two circuits, I felt like trying one myself. On the other side
of the board, before the switch, I put the variable resistor in.
I formed two circuits separately and they were supposed to work
as two teams. When I turn the resistor, they should light up in
turns. It turned out they always lighted up at the same time and
the regulator got REALLY hot. I couldn't find out why so I just
took off the resistor. Now they were working OK only I couldn't
have that result I planned.
took off the flexible resistor and arranged the right parts
in a serial circuit
I found out that the problem with my Variable Resistor. It has
three "legs" and we used to think the middle one is
for "ground". However, it is different here; the middle
one should be connected to the "power". The other two
legs are connected to parellel circuits. That's how it directs
the power from one to the other. That is where the problem is.
the black one(the middle one should be connected to the power
source and the other two lead to different independant circuits.
So when I turn the resistor, the lights go on and off accordingly.)