Looper
Intro: Looper
Make an audio looper for under $20
STEP 1: Gather Your Parts
Get all these parts, available from your local Radioshack:
1. 20-second recording module, part #276-1323
2. Two output jacks of your choice (I used 1/8" mono phone jacks)
3. 1 SPST toggle switch
4. 1 (or more) N.O. momentary pushbutton switches
5. 1 9V battery
6. A cool box/container to put it in
7. Suppplies that I assume you already have: wire, wire clippers, solder, a soldering iron
1. 20-second recording module, part #276-1323
2. Two output jacks of your choice (I used 1/8" mono phone jacks)
3. 1 SPST toggle switch
4. 1 (or more) N.O. momentary pushbutton switches
5. 1 9V battery
6. A cool box/container to put it in
7. Suppplies that I assume you already have: wire, wire clippers, solder, a soldering iron
STEP 2: Explore and Prepare the PCB
This is a drawing I made of the small circuit board that is the entirety of the recording module. It has a little speaker, 9V battery clip, pushbutton switch on an attached mini PCB, another pushbutton switch attached to the main board, a black-blob IC, and various resistors, capacitors, and a transistor.
STEP 3: Surgery!
Pry the little tabs up which keep the pushbutton on the main board. They are on the back of the board. The button itself should come off really easily.
Cut the wire leading to the speaker at point A, or you can simply desolder where they join to the PCB.
Locate R3, which is labeled on the board itself. If you can't read the numbers on the board, it's the resistor at the top, if your board is oriented like the picture above. The lead on the inside, point C, is where you will solder one wire. Attatch the other end of that wire to one lug of an SPST toggle switch. Attach another wire between the other lug and either one of the points where the speaker attatches to the board; mine is at point B. This is the loop connection.
Cut the wire leading to the speaker at point A, or you can simply desolder where they join to the PCB.
Locate R3, which is labeled on the board itself. If you can't read the numbers on the board, it's the resistor at the top, if your board is oriented like the picture above. The lead on the inside, point C, is where you will solder one wire. Attatch the other end of that wire to one lug of an SPST toggle switch. Attach another wire between the other lug and either one of the points where the speaker attatches to the board; mine is at point B. This is the loop connection.
STEP 4: I/O
Here's where you give your looper ears and a voice. Solderin two wire at each point where the speaker wires were. At the end of each, attatch the audio jack of your choice: 1/4", 1/8", RCA, etc. I used 1/8" minijacks.
Some optional steps:
1. Detatch the existing pushbutton switch on the smaller PCB at SW2. I did this and replaced it with an easier-to-mount N.O. momentary pushbutton switch.
2. Make a new one-shot switch by soldering directly to the exposed traces where the button on the main board used to be.
Some optional steps:
1. Detatch the existing pushbutton switch on the smaller PCB at SW2. I did this and replaced it with an easier-to-mount N.O. momentary pushbutton switch.
2. Make a new one-shot switch by soldering directly to the exposed traces where the button on the main board used to be.
STEP 5: 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.
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.
103 Comments
ΚΩΣΤΑΣΡ 9 years ago
Hello!!! I am novice yet!!! where can i find the istructions? where is the PCB circuit? I must be PRO??Thank you!!
mike.shea.5203 9 years ago
Here is the latest on getting the newest module to loop!!
lgalea 9 years ago
mkaviedez 10 years ago
Gizah 12 years ago
Solring 13 years ago
neverbored 14 years ago
I ordered 2 of these (A96010) a while back and tried to build a looper for some fun with my guitar based on this very cool instructable. Here is the link where the spec sheep is available for the parts I have.
http://www.electronics123.com/s.nl/it.A/id.499/.f?category=2
I had built a working model. I didnt mind the pause between loops, or oscollation that would build up after a a handfull of loops, the only thing that it lacked was the ability to have a live signal get through at the same time a loop was playing back, so I could play overtop. Maybe he on/off (single pole) play button iscolated the signal? I also tried having the input connected to the input terminal as well as the output jack simoultaneously with no result. I would be glad to build an instructable if any of you could take a look at the chip and throw ideas at me to troubleshoot. I have dismantled the pedal since (and stupid me didnt evan get one pic while it was assembled) but now I have an opportunity to start from square one, and record my progress to share it with all. + I plan on building 2 of these.
rabidsnakemonkey 14 years ago
C_Hart72 14 years ago
neverbored 14 years ago
neverbored 14 years ago
also wanted to mention parts most of you are using are not availabe in Canada. The parts I ordered and the site I found to order from online was the only place that would ship these type of electronics here. Sadly Radio Shack turned into "The Source" ...same store different name but the parts availibility for this kind of stuff became very dismal. The modification is essentally still the same across the board.
Moviekid 15 years ago
Moviekid 15 years ago
TED5165 14 years ago
Just found this circuit for looping the newer radio shack sound module.
http://www.flickr.com/photos/jaypee4227/2158771745/
soapone 14 years ago
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
TED5165 14 years ago
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/
mikebikecushing 14 years ago
tqbrady 15 years ago
lhpegram 15 years ago
allen2288 15 years ago