Transcript Building a Weather Station for a Near

Building a Weather Station
for a Near-Space Payload
AEM 1905: Spaceflight with Ballooning
University of Minnesota
Weather Station kit and instructions
Parts in Weather Station kit
Printed Circuit Board (PCB)
Wires for sensor cabling
Pressure sensor
Relative humidity sensor
Temperature sensor
Capacitor (unpolarized)
Resistor (unpolarized)
3 x 3 pin male header for sensor cable
Heat-shrink tubing (AKA shrink-wrap)
Solder resistor in place; snip all excess leads
Solder the capacitor in place
Insert relative humidity sensor, making
sure that the open part faces capacitor
Avoid solder bridges on closely-spaced
pins of the relative humidity sensor
Insert the temp sensor, watching polarity
Insert pressure sensor, right way around
Strip both ends of each wire, exposing
¼ inch length of the bare metal
Insert one wire through large hole then
bend it over and solder – for strain relief
Repeat with other 4 wires – use black for
ground and red for +5 volts (at least)
Insert 3 x 3 header into a female receptacle,
like that in a BalloonSat Easy computer
Orient 3 x 3 pin header next to the figure
to identify which pins to solder wires to
“Tin” the 5 pins – add a bit of solder quickly
Twist exposed ends of wires then tin them
Slide on shrink-wrap before proceeding.
Use blue shrink-wrap, not stuff in kit.
Use Helping Hands to hold wire up to pin
Solder 5 wires to pins, minimizing diameter
Slide shrink-wrap over solder joints
once all wires have been soldered
Shrink with heat gun while still plugged
in, then remove cable from receptacle
Completed Weather Station; ready
to be plugged into a flight computer