The Outcast’s Rest is an enchanted locker created by benevolent spirits to entomb the foul Putreghast. For ages, the locker stood silent, but as time marched on… something changed. The locker now calls out to you when you are near, the entity within begging for release. The voices claim that it is John Callaghan, American tourist that is trapped within… however can you be sure?
The project itself is centered around the ornate decor and the voice lines, it is all made possible with the Adafruit Sound FX board and a PIR sensor that triggers the board to play sounds.
For the project you’ll need the following:
– Embossing Foil
– Embossing Stylus
– Flat Back Cabochons
– A Wooden Box
– Double Sided Tape
For the Electronics:
– Audio FX sound board WAV/OGG Trigger with 2MB Flash
– Small powered external speaker
– PIR Sensor
– NPN Transistor
– 3x AAA Batteries and Battery Pack
– Soldering Tools
– x2 Half Bread Boards
– Micro-usb cable
Part 1: Connecting Your Components
Part 2: Formatting Your Sound Files
Luckily, this is quite easy. Use the micro-usb cable to connect the sound board to your computer. The sound board should appear as a USB device where you can store your sound files on. It only accepts .WAV or .OGG files encoded in a specific way. For this project we are using .WAV files. You must make sure your .WAV files are formatted at 16 bits and sampled at 22050 HZ or less. Free programs such as Audacity can allow you to do downsampling. After your audio files are recorded and formatted, you must name them correctly in order for them to play. We are going to use the Random play feature of the sound board, therefore we have to name the files in this fashion: TN__RAND_.wav
TN should be followed by the trigger PIN number we are using, for us, we are using pin 05. Rand should be followed by a number to name the sounds we are using (0-10). Therefore the final file names should look like this: TN05RAND0.wav, TN05RAND1.wav, TN05RAND2.wav, etc.
Now all you have to do is drag and drop these files into the Sound Board and it should be good to go! The PIR sensor doesn’t really return a value the way a photo-resistor does, it just tells the board whether or not there was motion so the board knows when to play a sound. The microcontroller handles everything, no coding, isn’t that neat?
Part 3: Decorating the Box!
Now comes the real fun part, using a foil of your choice, use embossing styluses to create decorative designs and imprints upon the metal. Cutting them into fittings of your choice and adhering them to the box with double sided tape! You can free hand it or create designs on paper, it is really up to you! Be creative!