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coloradocube / balloonsat

COTS balloonsat mission to test the RPi 4 with a battery UPS, a quad camarray, a GPS module, a RockBLOCK module, and a small number of Qwiic sensors
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Controllable heating of the balloonsat internal environment #38

Open ivogeorg opened 2 years ago

ivogeorg commented 2 years ago

Description

Randy Owen said the current balloonsat enclosure (See #39) will not trap the air and insulate the electronics sufficiently for the low temperatures on a high-altitude balloon flight (-70 to -85 deg F). The internal temperature should be actively maintained, especially not knowing how much heat the processor will generate.

Deliverables

  1. List and compare strategies for heating the internal air of the balloonsat enclosure.
  2. The heating should be controllable.
  3. Control-loop element descriptions:
    1. The sensor, probably a (set of) temperature sensor(s). Where should they be situated?
    2. The final control element of the heating process (e.g. a large resistor).
ivogeorg commented 2 years ago

@dperry29, this now becomes critical for the demo as well, as we'll have no time for later!