Step 5: In goes the Output

There is a speaker already installed in the Billy Bass, but it's kind of wimpy and not suited to live use, such as in a show. We will fix that by adding an output jack.

The speaker has two wires coming to it from the PCB. One goes to the positive terminal, one goes to the negative terminal. These should be marked on the speaker itself, but if not, dont worry, it's pretty easy to fix if you wire it backwards.

Take your output jack of choice (I used a 1/4" mono guitar jack, but you can use 1/8" jacks, RCA plugs, etc.) and wire one lug to each of the lugs on the speaker. I recommend trying out the various possibilities for wire placement with some alligator clips first, as those are easier to reverse than soldered wires. When you find the configuration that works, solder in the wires.
<p>SO GOOD! I modified the fish too... now it's just a plastic robot and fish head. <br><br>This works really well. My board was a bit different but it's easy to figure out where A, B, and C are if you have a basic understanding of boards (good to look it up before soldering anything). Beware! The photocell is pretty sensitive and I ruined mine (dont try to pull it out of the case with pliers haha). </p>
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Did he say "pink macaroni"?
yes he did i slowed down the play speed and he said pink macoroni
lmao i think he did!
You mean this part of the file? Enjoy!
poor fish i think he swaloed a dog whistle
This is AWSOME......
he said pink micro banana?
i heard it too *very scared*
Hey Dosher, this project looks awesome, and I'm actually interested in doing something similar. What connection in the Billy Bass's circuitry lets you bend the pitch with just a variable resistance? I'd love to add a couple photoresistors to that loop machine you made so i could de-tune the loop as it's being played back. I would have emailed you but yours isn't listed :) Mine should be, though, so if you want to drop me a line i'd really appreciate it. Keep up the good work!
Hey Lance, glad you liked the project. For variable resistance, you can put a potentiometer in parallel with the photocell, or have a SPDT switch that selects one of the two for use. I believe that the resistor that the photocell currently bridges is 300k, but I may be wrong, so make sure to check out the value on it to get an idea of what size pot to use. Good luck!
I cant watch the video it says "this page cannot be found"
Although melting holes in plastic housings is smelly and so should only be done in a well-ventilated area, it should not do any damage to your soldering iron tip. Just be sure to clean it off thoroughly after you're done, while it's still hot. I've used abrasive pads in the past, but you have to be careful not to remove the thin plating that's on some of them. I've since found that a dry paper towel works just as well, followed by a wipe on a damp sponge.
Save some bandwidth download this MP3 of the wavfile
HA HA Love IT, I detest those things (drive me nuts) have you got a curcit mod for "Tickle Me Elmo"? I'd love to see the expression on my daughters face if Elmo sounded like Rob Zombe
I am thinking that this would be a sweet project to incorporate one of the those old yak bak voice recorders or a cheap-o tape recorder. Then you could customize song and/or what he says. You could also make some mini mix taps for him. Use the output jack to plug him into an amplifier with speakers and make him into a jutebox! The possibilities are endless with this guy! It will be fun to try some of this out!
Extensive information on modifying your Billy Bass, including the song sung, is available online at Circuit Cellar Ink. There's a completely viewable copy of article originally published in the magazine:<br/><br/><a rel="nofollow" href="http://www.circuitcellar.com/pastissues/TOCjuly01.htm">http://www.circuitcellar.com/pastissues/TOCjuly01.htm</a><br/><br/>
Is it possible to change the audio to a different song, or someone elses voice? I'm thinking, if there is a way to secretly record someone (ahead of time) then have it come through your added speakers.
I can only imagine doing this to one of those new talking deer heads...:-)
Oh god. I think I have a new project.

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Bio: I'm a college student enrolled at Boston University, pursuing a chemistry degree. Hailing from Minnesota, I developed a keen interest in music, especially the ... More »
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