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Old 11-08-2011, 02:34 PM   #1
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Hello I am going to start training to become an electrician but I have zero knowledge in the field. I figured I might as well jump right in and get familiar with components. So I took an old tickle me elmo toy and took all the guts out. I am trying to figure out what parts have what functions in the toy. For instance I understand what makes the toy shake. But there is a timer in the toy that makes it shake for a certain amount of time I am trying to figure out which part that is. Also there is a speaker that plays a recorded sound every time you push a button I am trying to figure out where that sound is stored. I want to learn the components and how to work with this stuff. Is there a place I can read up on the different components and their functions?

I know these are very basic noob questions but I appreciate any help possible. Thanks in advance.

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Old 11-08-2011, 02:47 PM   #2
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Chances are, all of those functions are on a little custom chip in there.....

The timer is most likely a 555 chip stuck on the substrate.....and the voice is stored in an PROM on the chip.

But the stuff your looking at is pretty far removed from the world of an electrician.

For the field you want.....take a trip down to Home Depot and brows through the electrical section. You need to learn what all that stuff is....Elmo is not going to be any help to you.

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Old 11-08-2011, 02:52 PM   #3
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Electricians work on wiring in homes and buildings or on electric lines which supply electric power to these. And that is mainly what this forum is for.

Electronics is involved with gizmos which are battery operated or plug into outlets. So for gizmos such as Elmo, you will get more information at an electronics forum like the following...
http://forum.sparkfun.com

Note that there are very smart people both here and at the electronics forums. And many of these people are familiar with both electrical wiring for buildings as well as electronics.
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Old 11-08-2011, 03:24 PM   #4
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As to where the sound comes from for these toys, they use "microcontrollers" which are small self contained computer chips. These have "programming" which can make an external motor move or a speaker play a song. The song is stored in the microcontroller's "memory".

If you want to learn about microcontrollers, Radio Shack sells one called the ""What’s a Microcontroller? Basic Stamp". The book for this is free on-line at the following link. I suggest you read the entire book, but for how it makes sound, read the section: "Chapter #8: Frequency and Sound"

""What’s a Microcontroller? Basic Stamp book...
http://www.parallax.com/dl/docs/books/edu/wamv2_2.pdf


FYI - Here is what the song "Take Me Out To The Ballgame" looks like in microcontroller programming in "RTTTL" format...

RTTTL_File DATA "TakeMeOutToTheBallgame:d=4,o=7,b=225:2c6,c,a6 ,",
"g6,e6,2g.6,2d6,p,2c6,c,a6,g6,e6,2g.6,g6,p,p,a 6",
",g#6,a6,e6,f6,g6,a6,p,f6,2d6,p,2a6,a6,a6,b6,c ,",
"d,b6,a6,g6"
Done DATA ",q,"
Notes DATA "p", "a", "#", "b",
"c", "#", "d", "#",
"e", "f", "#", "g",
"#"
Octave8 DATA Word 0, Word 3520, Word 3729, Word 3951,
Word 4186, Word 4435, Word 4699, Word 4978,
Word 5274, Word 5588, Word 5920, Word 6272,
Word 6645
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Old 11-08-2011, 03:35 PM   #5
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Quote:
Originally Posted by Billy_Bob View Post
RTTTL_File DATA "TakeMeOutToTheBallgame:d=4,o=7,b=225:2c6,c,a6 ,",
"g6,e6,2g.6,2d6,p,2c6,c,a6,g6,e6,2g.6,g6,p,p,a 6",
",g#6,a6,e6,f6,g6,a6,p,f6,2d6,p,2a6,a6,a6,b6,c ,",
"d,b6,a6,g6"
Done DATA ",q,"
Notes DATA "p", "a", "#", "b",
"c", "#", "d", "#",
"e", "f", "#", "g",
"#"
Octave8 DATA Word 0, Word 3520, Word 3729, Word 3951,
Word 4186, Word 4435, Word 4699, Word 4978,
Word 5274, Word 5588, Word 5920, Word 6272,
Word 6645
If you can't dazzel them with brillance, the baffel them with BS........or just throw some hex code at them.......

There are two kids of people in this world....those that understand binary, and those that don't.
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Old 11-10-2011, 12:03 PM   #6
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Thank alot for the help guys. That is eactly what I needed.

Oh and by they way I can covert hex into decimal and binary. Haha
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Old 11-10-2011, 12:10 PM   #7
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Actually you cant say the saying. Only write it.



There are 10 kinds of people in the world, those that understand binary and those that don't.

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Old 11-10-2011, 12:51 PM   #8
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There are 10 kinds of people in the world, those that understand binary and those that don't.[/quote]


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