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Rar Box is Go! 
27th-Oct-2008 05:32 pm
In response to the occasional request for a “rar box” that can be installed in a costume or mask and provide sound effects:

I’ve had the parts for this for months but shelved it when I couldn’t get the damn thing working. Returned to it with a fresh perspective a couple days ago and got it sorted out.

This is not a voice changer; it can only play back prerecorded sounds. These are stored as WAV files on an SD or MMC card. In the example here I've got a different animal sound attached to each button on a keypad…but it’s very flexible in that regard, you could use magnetic switches in a glove to trigger different sounds, or pressure sensors in the feet to make stompy noises, things like that. Some limitations are that it can play only one sound at a time (it won't mix two or more sounds playing simultaneously) and the audio fidelity is not especially great (but not horrid either - see the demo, I think it’s more than adequate for rarsuit purposes).

It’s based on the Arduino microcontroller platform and the Adafruit Industries Wave Shield for audio playback, plus a few odds and ends. Not including the speakers, maybe about $65 worth of parts in total. The Wave Shield comes only as a DIY kit and requires soldering…nothing too heinous, anyone who knows which end of a soldering iron to hold could finish the task in an hour or so. If there’s sufficient interest I could assemble a batch of these for folks (with a suitable enclosure and whatnot) but would have to charge a fair bit extra for my time. Otherwise I’ll write up some directions and a bill of materials and folks could set about making their own.

28th-Oct-2008 01:21 am (UTC)
id like a tutorial on this and links to get parts :3
(Deleted comment)
28th-Oct-2008 05:14 am (UTC)
*poke* People can help, y'know. Rar!
28th-Oct-2008 05:28 am (UTC)
I Recognize those speakers! hahahah the same ones I used for Vortex! They really do work great, huh?

WOW!! What you made is fantastic sounding !!

28th-Oct-2008 06:53 am (UTC)
This is awesome! I'd love to have something like this once I make my pied crow. :o Then I could creepy crow giggle all the time. XD
28th-Oct-2008 10:47 am (UTC)
hmmm, swap Foofers SD card when he's not looking.. meow sounds to stomping and maybe some chicken noises! :)
28th-Oct-2008 01:52 pm (UTC)
Damn, dragons are sure tech savvy.

Awesome, and yet very hilarious. For some reason the Apple boot up noise from the soundbox made me laugh. You need to give the camera a thumbs-up at the very end, with a 'The more you know' commercial screenshot and some nice tinkerbell twinkling on the fade to black.
28th-Oct-2008 08:45 pm (UTC)
hey foofers, I'd be interested in an estimate. I'd need to find good sounds though, that might take a while... aazhie@gmail.com
3rd-Nov-2008 06:49 am (UTC)

gotta make one of those!!
21st-Dec-2010 06:18 pm (UTC) - library
Hi foofers :) would you mind sharing your sketch? I'm having trouble figuring out how to get the shield & keypad library to play nice. I.E. the shield examples are by default looking for low/high button values, but obviously that's not how a matrixed keypad works…
8th-Jan-2011 10:10 pm (UTC) - Re: library
Hey! I'm real sorry for not responding...been out of town for a while. Still in need of this?
22nd-Sep-2012 10:12 pm (UTC)
This is exactly what I'm looking for to make stompy sound effects and dragon roars for my Tyrnn suit. I'd like to get a list of materials or possibly have one crafted for me to install in the feet and muzzle. Could you drop me a line sometime, please?
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