IQI3s, netcard connect to ethernet hub

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• IQI3s, netcard connect to ethernet hub
• 802.11 bridge allows all to talk over 802.11
• Mote/acoustics in corners
• Additional mote-nic
• Netcard has
• 2 bullet cards
• 1 serial port connected to mote-nic
• 1 serial port TX/gnd connected to all RX lines on
  corner motes
• IQI3s mounted on some kind of bracket possibly
  with pan/tilt.
• Power
• Initially everything plugs into power strip. For
  battery operation can drive off car battery
  inverter )
• Future power supply with appropriate voltages,
  powered from single 12 V source
• Future Control over what is powered?

24
12
802.11
ethernet
netcard
Power strip
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Corner Mote Acoustic Pack

• Current mote
• Limited number of pins
• First cut build card for current mote,
  transition to new motes as they arrive
• Microphones
• Pre-amps for 2 microphones
• 2-channel output connector
• Mote controls switch that swaps channels
• One channel routed to mote ADC input as well as
  output connector
• Speakers
• Dual channel audio amplifier
• Audio source is two pins on mote to make a crude
  3-step DAC (4th bit pattern is shutdown)
• Software
• Responds to commands from serial input all 4
  corners get same messages
• Possibly do audio thresholding
• Communicate back via mote radio
• Drive speaker with predefined code seqeuence
• Control microphone switch
• netcard can program them to send back front or
  back microphone signal
• Bullet cards process 4 audio channels, one from
  each corner

One microphone and speaker on each side of panel,
controlled by a corner mote
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• Typical installation