PROJECTS: RFID TEDDY BEAR
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2b. Open the Serial Monitor
to see what the RFID reader
is seeing, then plug the RFID
reader back in. Bring each
one of your RFID tags close to
the reader. The 10-digit hexadecimal tag IDs should print
out in the Serial Monitor.
3d
3a
2c. Use a permanent marker
to label each tag with its tag
ID. You won’t need to do this
again until you get a new
batch of tags.
2b
3. ENCODE THE AUDIO
3a. For each tag, record your
audio or otherwise obtain a
sound file you want to use.
2c
3b. Download and install
Audacity ( audacity.source
forge.net) — free, open source
software for recording and
editing sounds. Following the
Wave Shield’s “Converting
audio to the proper format”
tutorial, use Audacity to convert your audio files into the
correct format: 16-bit sample
size, PCM encoding, and a
sample rate of 22kHz or less.
These conversions might be
the trickiest part of the whole
project.
3b
3c. Name each sound file
with the first 8 hexadecimal
digits of the RFID tag you
want to associate with it. (It’s
extremely unlikely that you’ll
have duplicates.)
TIP: Since
these filenames
don’t say anything about the
sounds they contain, be sure to
note somewhere
which sound goes
with which tag.
3d. Copy the sound files in
the root directory of the SD
memory card.
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