The Light Board has a Micro B USB connector to allow it to be directly
powered by an external power supply. The relatively slender cables the
Spectacle data travels over are not adequate for the large amount of
current drawn by more than a few pixels.
The Configuration Utility
Spectacle Audio Board
The Spectacle Audio Board only supports one action: Play Sound. As you
can see above, there are a number of settings associated with this action.
•
“listen to channel number __”
- This is the channel number which
triggers the audio to start playing. As long as this channel’s value is
above the threshold level (see below), the sound will repeat playing
at a rate determined by the two time intervals specified lower down.
•
“wait __ seconds and play”
- This is the first delay in the system.
You can sequence events however you see fit by delaying when a
sound plays.
•
“file number __”
- This is where you tell the board which file to play.
Remember, when copying the audio files to the microSD card, they
should be named as 00.ogg, 01.ogg, 02.ogg, etc. The number in this
field corresponds to the number in the name of the audio file. If there
is no audio file with the corresponding number, no sound will play.
•
“do not allow another sound to interrupt until __ seconds”
- The
number in this field should correspond to the length of the audio file.
If this value is less than the length of the sound file, another trigger
sent to the audio board will interrupt the sound before it finishes. If it
is longer than the sound, there will be a period of silence after
playback before another playback can be initiated.
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