building a weather station for a near-space payload aem 1905: spaceflight with ballooning university...
TRANSCRIPT
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Building a Weather Stationfor a Near-Space Payload
AEM 1905: Spaceflight with BallooningUniversity of Minnesota
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Weather Station kit and instructions
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Parts in Weather Station kit
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Printed Circuit Board (PCB)
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Wires for sensor cabling
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Pressure sensor
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Relative humidity sensor
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Temperature sensor
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Capacitor (unpolarized)
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Resistor (unpolarized)
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3 x 3 pin male header for sensor cable
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Heat-shrink tubing (AKA shrink-wrap)
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Solder resistor in place; snip all excess leads
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Solder the capacitor in place
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Insert relative humidity sensor, makingsure that the open part faces capacitor
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Avoid solder bridges on closely-spacedpins of the relative humidity sensor
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Insert the temp sensor, watching polarity
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Insert pressure sensor, right way around
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Strip both ends of each wire, exposing¼ inch length of the bare metal
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Insert one wire through large hole thenbend it over and solder – for strain relief
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Repeat with other 4 wires – use black forground and red for +5 volts (at least)
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Insert 3 x 3 header into a female receptacle,like that in a BalloonSat Easy computer
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Orient 3 x 3 pin header next to the figureto identify which pins to solder wires to
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“Tin” the 5 pins – add a bit of solder quickly
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Twist exposed ends of wires then tin them
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Slide on shrink-wrap before proceeding.Use blue shrink-wrap, not stuff in kit.
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Use Helping Hands to hold wire up to pin
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Solder 5 wires to pins, minimizing diameter
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Slide shrink-wrap over solder jointsonce all wires have been soldered
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Shrink with heat gun while still pluggedin, then remove cable from receptacle
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Completed Weather Station; readyto be plugged into a flight computer