# Laugh Track Jacket

## Overview

https://www.youtube.com/watch?v=7Bb9at0rsPM

Bring your own sound FX to the party! Turn a blazer into your own personal theme music machine, foley artist, or comedy audience. Battery powered speakers in the pockets blast your sound while membrane switches in the pocket and lapel activate the audio.

Before beginning this easy soldering + sewing project, check out the&nbsp;[Adafruit Audio FX Sound Board guide](../../../adafruit-audio-fx-sound-board)!

![](https://cdn-learn.adafruit.com/assets/assets/000/022/416/medium800/projects_laugh-track-jacket-00.jpg?1421250679)

For this project, you will need:

- [Adafruit Audio FX board with Amp](http://www.adafruit.com/product/2217), in [2MB](http://www.adafruit.com/product/2210)&nbsp;or [16MB](http://www.adafruit.com/product/2217)&nbsp;storage size
- [stereo enclosed speaker set](http://www.adafruit.com/product/1669)
- [JST-PH 20pin SMT right angle connector](http://www.adafruit.com/product/1769)
- [membrane keypad](http://www.adafruit.com/product/1333)
- [membrane 1x4 keypad](http://www.adafruit.com/product/1332)
- [3xAAA battery holder](http://www.adafruit.com/product/727)&nbsp;and&nbsp;[batteries](http://www.adafruit.com/product/617)
- [ribbon cable with headers](http://www.adafruit.com/product/758)
- [stranded wire](https://www.adafruit.com/product/1970)
- [soldering iron and tools](../../../adafruit-guide-excellent-soldering)
- needle and thread
- seam ripper
- scissors
- [multimeter](../../../multimeters)
- [alligator clips](https://www.adafruit.com/product/1008)&nbsp;(optional)

# Laugh Track Jacket

## Circuit Diagram

![](https://cdn-learn.adafruit.com/assets/assets/000/022/435/medium800/projects_diagram.jpg?1421255278)

Click to enlarge.

# Laugh Track Jacket

## Prepare Components

![](https://cdn-learn.adafruit.com/assets/assets/000/022/417/medium800/projects_laugh-track-jacket-01.jpg?1421251301)

Solder long stranded wires onto one of the speakers so that it can reach all the way to the second jacket pocket.

![](https://cdn-learn.adafruit.com/assets/assets/000/022/418/medium800/projects_laugh-track-jacket-02.jpg?1421251328)

Solder a JST battery connector to the back of the audio board.

![](https://cdn-learn.adafruit.com/assets/assets/000/022/419/medium800/projects_laugh-track-jacket-03.jpg?1421251696)

Position your components on the jacket while flat on a surface, and plan where your triggers, speakers, and battery will go. Use jumper wires to extend the membrane keypad wires.

![](https://cdn-learn.adafruit.com/assets/assets/000/022/420/medium800/projects_laugh-track-jacket-04.jpg?1421251828)

Use a seam ripper to carefully open seams inside the lining of the jacket to gain access to the pockets for the next step.

# Laugh Track Jacket

## Assemble Circuit

![](https://cdn-learn.adafruit.com/assets/assets/000/022/421/medium800/projects_laugh-track-jacket-05.jpg?1421252426)

Find the seams at the bottoms of the pockets where you wish to store the speakers, and use a seam ripper to open small holes for the wires to poke through.&nbsp;

![](https://cdn-learn.adafruit.com/assets/assets/000/022/422/medium800/projects_laugh-track-jacket-06.jpg?1421252445)

Thread the wires through.

![](https://cdn-learn.adafruit.com/assets/assets/000/022/423/medium800/projects_laugh-track-jacket-07.jpg?1421252464)

Always leave a little extra wire slack! As you move your body you want the wire to stay loose enough not to pull on any of the components.

![](https://cdn-learn.adafruit.com/assets/assets/000/022/424/medium800/projects_laugh-track-jacket-08.jpg?1421252487)

Continue installing components and routing wires back to one pocket using your seam ripper. This step is a bit awkward as you have your arms inside the jacket lining trying to route tiny wires.

![](https://cdn-learn.adafruit.com/assets/assets/000/022/425/medium800/projects_laugh-track-jacket-09.jpg?1421252561)

All your wires should convene in one pocket where you'll store the audio board and battery.

![](https://cdn-learn.adafruit.com/assets/assets/000/022/426/medium800/projects_laugh-track-jacket-10.jpg?1421252624)

Set up your audio board in a pair of helping hands or panavise, and bring over the wires sticking out of th pocket. Be careful when using your soldering iron near the jacket, accidentally grazing it could leave permanent burn marks.

![](https://cdn-learn.adafruit.com/assets/assets/000/022/427/medium800/projects_laugh-track-jacket-11.jpg?1421253057)

Solder the speaker wires directly to the outputs marked on the audio board.

![](https://cdn-learn.adafruit.com/assets/assets/000/022/428/medium800/projects_laugh-track-jacket-12.jpg?1421253089)

Prepare the ribbon wires coming from the triggers by snipping, stripping, and tinning the leads.

![](https://cdn-learn.adafruit.com/assets/assets/000/022/429/medium800/projects_laugh-track-jacket-13.jpg?1421253112)

Solder these wires to the trigger pins and ground, according to the circuit diagram.

# Laugh Track Jacket

## Stitch and Load Sounds

![](https://cdn-learn.adafruit.com/assets/assets/000/022/431/medium800/projects_laugh-track-jacket-14.jpg?1421253275)

Test that your audio board is working! Plug in the battery pack and switch it on. Use an alligator clip or piece of wire to connect GND to pin 0. A sample sound should play.

Plug in the audio board over USB and load the sounds you like. Refer to the [Audio FX Board guide](../../../../adafruit-audio-fx-sound-board)&nbsp;for more info on loading sounds.

![](https://cdn-learn.adafruit.com/assets/assets/000/022/432/medium800/projects_laugh-track-jacket-15.jpg?1421253297)

Use a needle and thread to secure the memberane switches to your jacket.

![](https://cdn-learn.adafruit.com/assets/assets/000/022/433/medium800/projects_laugh-track-jacket-16.jpg?1421253313)

Also tack down the speakers and sound board using the provided mounting holes. Restitch any seams you cut with the seam ripper and tack down any remaining wires running through the inside of the jacket. Enjoy!


## Featured Products

### Adafruit Audio FX Sound Board + 2x2W Amp - WAV/OGG Trigger -16MB

[Adafruit Audio FX Sound Board + 2x2W Amp - WAV/OGG Trigger -16MB](https://www.adafruit.com/product/2217)
Would you like to add audio/sound effects to your next project, without an Arduino+Shield? Or maybe you don't even know how to use microcontrollers, you just want to make a sound play whenever you press a button. What about something that has to be small...

In Stock
[Buy Now](https://www.adafruit.com/product/2217)
[Related Guides to the Product](https://learn.adafruit.com/products/2217/guides)
### Adafruit Audio FX Sound Board + 2x2W Amp - WAV/OGG Trigger - 2MB

[Adafruit Audio FX Sound Board + 2x2W Amp - WAV/OGG Trigger - 2MB](https://www.adafruit.com/product/2210)
Would you like to add audio/sound effects to your next project, without an Arduino+Shield? Or maybe you don't even know how to use microcontrollers, you just want to make a sound play whenever you press a button. What about something that has to be small...

In Stock
[Buy Now](https://www.adafruit.com/product/2210)
[Related Guides to the Product](https://learn.adafruit.com/products/2210/guides)
### Stereo Enclosed Speaker Set - 3W 4 Ohm

[Stereo Enclosed Speaker Set - 3W 4 Ohm](https://www.adafruit.com/product/1669)
Listen up! This set of two 2.8" x 1.2" speakers are the perfect addition to any audio project where you need 4 ohm impedance and 3W or less of power. We particularly like these speakers as they are small and enclosed for good audio volume and quality. The pair have a handy SPK input...

In Stock
[Buy Now](https://www.adafruit.com/product/1669)
[Related Guides to the Product](https://learn.adafruit.com/products/1669/guides)
### JST-PH 2-Pin SMT Right Angle Connector

[JST-PH 2-Pin SMT Right Angle Connector](https://www.adafruit.com/product/1769)
A simple 2-pin connector that is compatible with the "JST PH 2-pin" connector - perfect for soldering to the bottom of our [3.3V Logic Trinket](//www.adafruit.com/products/1500) and [5V Logic Trinket](//www.adafruit.com/products/1501)! These mate perfectly with...

In Stock
[Buy Now](https://www.adafruit.com/product/1769)
[Related Guides to the Product](https://learn.adafruit.com/products/1769/guides)
### Membrane LED Keypad + extras

[Membrane LED Keypad + extras](https://www.adafruit.com/product/1333)
This membrane keypad has a single key, but it does have an embedded surface-mount red LED installed. The flex cable is also extra-long, so we can think of a lot of wearable and portable projects that would use this sort of switch and have an LED as feedback (say, to indicate that an action is...

In Stock
[Buy Now](https://www.adafruit.com/product/1333)
[Related Guides to the Product](https://learn.adafruit.com/products/1333/guides)
### Membrane 1x4 Keypad + Extras

[Membrane 1x4 Keypad + Extras](https://www.adafruit.com/product/1332)
Punch in your secret key into this numeric membrane keypad. This keypad has 4 buttons, and since every key has its own wire line, no matrix code is required - just treat these like every day switches. The membrane is soft and has a removable paper backing to expose a strong adhesive so you can...

In Stock
[Buy Now](https://www.adafruit.com/product/1332)
[Related Guides to the Product](https://learn.adafruit.com/products/1332/guides)
### 3 x AAA Battery Holder with On/Off Switch and 2-Pin JST

[3 x AAA Battery Holder with On/Off Switch and 2-Pin JST](https://www.adafruit.com/product/727)
This battery holder connects 3 AAA batteries together in series for powering all kinds of projects. We spec'd these out because the box is slim, and 3 AAA's add up to about 3.3-4.5V, a very similar range to Lithium Ion/polymer (Li-Ion) batteries and have an on-off switch. That makes...

In Stock
[Buy Now](https://www.adafruit.com/product/727)
[Related Guides to the Product](https://learn.adafruit.com/products/727/guides)
### Alkaline AAA batteries - 2 pack

[Alkaline AAA batteries - 2 pack](https://www.adafruit.com/product/617)
Battery power for your portable project! These batteries are good quality at a good price, and work fantastic with any of the kits or projects in the shop that use AAA's.&nbsp;This is a pack of **2&nbsp;AAA batteries**.  
  
These batteries are Alkaline (MnO2) chemistry,...

No Longer Stocked
[Buy Now](https://www.adafruit.com/product/617)
[Related Guides to the Product](https://learn.adafruit.com/products/617/guides)

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