(maybe not any as complicated as the picture, because this has so many LEDs)
Thanks to these websites for pictures:
Step 1: Materials
I usually use the following:
-LEDs or a small motor
-I usually use nine volt batteries because I don't have the money for button cells, which work much better because of their size.
-The ability to not get frustrated and rip everything to pieces (I barely make this one)
Step 2: Decide What You Want to Make
Step 3: Make the Switch
In the first photo, the card is open and the switch is making contact. The pencil lines represent wires. In the second photo the card is closed and it is not making contact because of the tape. Pencil lines also represent tape. I bent the paper to get that shot. The third picture is the inside of the button.
Step 4: Hook Stuff Up
First, you need to hook up the LED or motor. If it is a motor make sure to test it first to get the polarity right so that it spins the right direction. For an LED, twist a wire around the correct leg so that it makes contact and then tightly seal with a small piece of electrical tape. Do the same with the other leg. I usually then bend the legs and use either electrical tape or duct tape to stick the legs into place, so that it won't move when you finish it. For a motor, twist both wires together and then seal tightly with electrical tape. Repeat for the other wire, and you are done connecting your main component. After that, you have to connect the switch. Just use the methods above to connect. Next you need to connect the battery. For a button cell, twist the wire end in a circle and tape it on for both sides. For a nine volt battery, I usually mess around with it for a while. It takes work. One thing I do is tape on aluminum foil and tape the wire to that. It is kind of a really bad connection because it is delicate and falls apart pretty quickly unless you use tons of tape. If anybody has suggestions, please leave a comment. I know there are nine volt battery connecters, but those usually cost money except when salvaged (done that). After the battery is connected, test it. If it doesn't work, an LED should have the polarity reversed, because those only work one way. To connect something to the shaft of a motor, use electrical or duct tape. Make sure it connects to the shaft well or else the tape will be useless.
Step 5: Cover Up the Electronics
I use a piece of paper the same type as the card's paper to cover the electronics and then poke a hole for the LED or motor shaft. To attach it I use scotch tape or once staples when I couldn't find any scotch tape. I also make a marking for where the button is when I use a button. Usually it is a bunch of circles with the words "Press Me" next to it. Write your message or draw whatever it is you want on your card. (markers are easy to use for this because you don't have to push down very much to write)
Step 6: Troubleshooting
Doesn't turn on.----Check all connections and maybe check the switch. If you used the button, check to make sure that the tape you used to attach the foil is not covering the foil.
I checked the
above and it
didn't work!----------Make sure if you are using an LED that It is the correct polarity. These only work one way. Also check the voltage and
see if there is enough for your component. Also make sure that your components that aren't burned out or fried because
of too much voltage.
Step 7: Going Further
Some things you could do that go further are listed here:
Multiple parts in series
Programming cards to play sound
Using flashing LEDs (they flash on their own)
Making mechanical cards(I've done that before with strings pulling spinning parts)