Ordered some of these http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MPX4250
Telemetry and control.
- pressure (potentially multiple, probably Freescale)
- thermal (multiple? maybe 1-wire?)
- liability insurance ny
- buoyancy control - solenoid valve to vent balloon
- rope release - nichrome wrapped around nylon?
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