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Looper

Step 5Finished (almost)!

Finished (almost)!
And there you have it, a finished looper. All that's left is to house it in something. I put mine in a Fossil company watch tin. These are great for smaller projects like this; they're compact, easy to drill, and are funky-colored. Of course, spray paint is always an option.

To record, hook up some sort of input device to either jack, hold down the momentary puchbutton switch you either did or didn't wire into SW2, and speak/puch play/press a key/whatever you're doing to make sound. I wired the headphone jack on my laptop to it and play clips of recorded audio. When you're done recording (up to 20 seconds), let go of the button, and flip the toggle switch (after plugging a speaker up to the other jack). It will loop continuously. Some cool percussion loops can be made using this simple method.

The looper has some quirks associated with it, but i'll let yoou figure them out, it's more fun that way.
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5 comments
May 6, 2009. 2:27 PMMoviekid says:
hey! AWESOME project... thanks so much for this! I got a similar version of this board, I'm not sure if it will work with this or not, but I certainly hope it does work. I will find out tomorrow. Does anyone know if I could get the LED that is on the board to shine through the enclosure I'm putting it into? This would be a great help! THANKS!
Feb 15, 2010. 6:54 AMTED5165 says:

I haven't tried it yet, but this circuit looks like it would work with the new module.  http://www.flickr.com/photos/jaypee4227/2158771745/

May 15, 2009. 8:49 PMMoviekid says:
Okay, so the revised board DOES NOT WORK!!!! It will play back once, but I can not find a way to make it loop. Check your local radio shack, mine had one of the older boards in stock... good luck!
Feb 17, 2010. 8:06 AMTED5165 says:

Just found this circuit for looping the newer radio shack sound module. 

http://www.flickr.com/photos/jaypee4227/2158771745/

Nov 19, 2009. 3:43 PMsoapone says:
today I bought a little 16 sec voice recorder (5 EU)
First it did not loop but when I bypassed the playbutton and accidentaly conneczted it to mic + it suddently looped... Don´t now why. To start the playback I now have to connect the playbutton to ground.. Still experimenting.

Problems still to solve:

When the looper power is set to on the Looper imediately starts to play...
ther is a little sound gap (time seems to fit) between the loops
Aug 18, 2007. 7:49 PMblackfire4116 says:
I love the idea of this device and what some people have done with it. Unfortunately I went to my local Radio Shack, purchased the appropriate electronics only to get home and find out that the design has changed. A couple of more capacitors & several more resistors. Although the unit looks sleeker I'm not sure if this project is still possible with the new board. There's still a "R3" labeled on the unit but wiring as directed doesn't seem to work. Any ideas?
Apr 6, 2006. 8:32 AMMark Rehorst says:
Cool project! I built something like this about 20 years ago, using a bucket-brigade audio delay line. I had it set up with a mic input and headphones out. I also had a pot to send a variable amount of the output back to the input. It made some really neat echoes that repeated for a long time with the distortion growing with each repeat. Very freaky! It was fun to try to read a book while listening to my delayed/echoed voice. Almost impossible to read beyond the first few words... TD
May 1, 2006. 4:30 PMsirwilliamjr says:
Would it be possible to use two of these sound recorders to add multiple layers to the loop? Could you connect the input/outputs together w/ a switch, along w/ the input from your audio source, throw in some volume knobs and then record to one module, and then play it back while recording on the second module AND adding new input? If that makes any sense... It would be like the fancy guitar loopers where you could be a one man band w/ a bassline, percusion, and a few guitar parts, only you couldn't remove any "layers" once you add them. -Will

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Author:dosher
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 experiemental side of it, so I began mak...
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