Transcript 06_soldering_101 (PPTmin) - Colorado Space Grant Consortium

Gateway To Space
ASEN / ASTR 2500
Class #06
Colorado Space Grant Consortium
One Minute Paper:
Announcements:
- HW 04 DUE September 18, 2007
- http://files-upload.com/
- Proposals and Presentations due September 20, 2007
- 58 Days To Launch
- Today: Class #4 Wrap Up, Soldering 101, HOBO
Class #4 Wrap Up
Class #06
Colorado Space Grant Consortium
Science Theme:
1.0 Sky Brightness Measurements
2.0 Video Capture of Stars Using CCD Imaging System
3.0 Stabilized Video Capture of Stars
4.0 Attitude Determination of Instrumentation
5.0 Attitude Determination and Control of
Instrumentation
One Minute Paper:
Presentation:
Presentation Templates
Final Written Report:
Design Document Template
Final Presentation:
- Should cover same items in report
- team video
1. Mission Statement and Objectives
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Very important step
Not too specific and not too general.
Solution independent – don’t design yet!
What does your mission do and where?
Pick something which is interesting to someone (customer), and which you
can be good at (core competency)
Mission Statement 1, Crappy: too general
Explore properties of the upper atmosphere which cause drag on satellites.
Mission Statement 2, Decent
Explore the spatial and temporal variability of the neutral thermosphere at altitudes
of 350-100km, and investigate how wind and density variability over 500-3000 km
scales translate to drag forces on satellites.
Mission Statement 3, Crappy: too specific
Explore the spatial and temporal variability of 10% or more of the neutral
thermosphere at altitudes of 350-100km with a three axis stabilized spacecraft
platform which weighs less than 100 lbs, and investigate how wind and density
variability over 500-3000 km scales translate to drag forces on satellites. Do this
by measuring acceleration, horizontal wind with an electrostatic device, and
composition using a quadrupole mass spectrometer.
Soldering 101
Class #06
Colorado Space Grant Consortium
Soldering:
Caution:
- Soldering is dangerous if not respected
- Be mindful of where you are and where
the soldering iron is
- Eyes and liquid solder
- Everyone is expected to solder
- If you get burned…
- Stay together, don’t work ahead
PCB – printed circuit boards
Solder Pads
Soldering
Top View
Side View
Circuit Board
Resistor
Soldering
Iron
Move soldering iron until tip is
touching wire & solder pad
Move solder to touch edge of tip.
Solder
Hold until solder melts
on tip by wire
Solder
Move solder back to touch wire only
Solder
Move solder in to form a
small pocket
Solder
Move soldering iron tip up. This
will drag solder up with it.
Solder
Look for
shinny fillets
Soldering Tips
1. Make sure tip is hot
2. Clean & tin tip
3. Keep tip clean by using wet sponge and cloth
4. Heat until the parts are hot enough to melt solder
5. Hold until solder flashes around pad
6. Do not put too much solder on
Tinned Copper Traces
Top View
Soldered
Top View
Solder bridge shorting two traces - bad, bad, bad
But, can be fixed by reheating or using solder sucker
Hands-on: Soldering
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Hands-on: Soldering
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Questions?
Class #06
Colorado Space Grant Consortium
Hands-on: Soldering
- Get into your teams
- Each person on the team will solder their own
circuit
- You and your team will have 45 minutes
- Let me know when you are done
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Hands-on: Soldering
Step 1: Take out solder kits and distribute
Help each other learn the techniques
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Hands-on: Soldering
Step 2: Layout kit
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Hands-on: Soldering
Step 1: Distribute solder kits among team
You will have to share the soldering stations
Help each other learn the techniques
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Hands-on: Soldering
Step 2: Layout kit
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Voltmeter 101
Class #06
Colorado Space Grant Consortium
Voltmeter is
very useful
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Voltmeter 101:
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This is the set up typically used
Use this 101:
Voltmeter
setting to
check
resistor
values
Use this 101:
Voltmeter
setting to
check DC
voltage
Use this 101:
Voltmeter
setting to
check
continuity
Hands-on: Soldering
Step 3: Look at board, find reference point
Install Side
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Hands-on: Soldering
Step 3: Look at board, find reference point
Solder Side
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Hands-on: Soldering
Step 4: Flip board over and place chip
Step 5: Small circle
placed over pin hole
“1”
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Hands-on: Soldering
Step 6: Flip board over and bend chip leads out
DO NOT SOLDER AT THIS TIME
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Hands-on: Soldering
Step 7: Install 120 kΩ resistor (Brown, Red, Yellow)
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Hands-on: Soldering
Step 8: Install 33 kΩ resistor (Orange, Orange, Orange)
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Hands-on: Soldering
Step 9: Verify resistors
120 kΩ
Brown, Red, Yellow
33 kΩ
Orange, Orange, Orange24
Hands-on: Soldering
Step 10: Flip board over
120 kΩ
Brown, Red, Yellow
Step 11: Solder Resistors
33 kΩ
Orange, Orange, Orange25
Hands-on: Soldering
Step 12: Inspect solder joints and trim leads
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Hands-on: Soldering
Step 13: Flip
board over
and install
capacitor
Gray strip
indicates
“negative”
lead
“-” Lead
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Terry, they are working ahead…
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Hands-on: Soldering
Step 14: Verify capacitor is installed correctly
“-” Lead
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Hands-on: Soldering
Step 15: Flip over board and solder capacitor
“-” Lead
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Hands-on: Soldering
Step 16: Verify solder joint and clip leads
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Hands-on: Soldering
Step 17: Install RED LED over 120 kΩ Resistor
Negative side is facing edge of board
Negative Lead
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Hands-on: Soldering
Step 18: Install GREEN or YELLOW LED over 33
kΩ Resistor. Negative side is facing edge of chip
Negative Lead
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Hands-on: Soldering
Step 19: Flip board over and solder LED leads
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Hands-on: Soldering
Step 20: Solder chip to board. Go slow
Step 21: Verify solder joints and check for solder
bridges
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Hands-on: Soldering
Step 22: Install 9V battery clip to board
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Hands-on: Soldering
Step 23: Flip board over and solder battery leads
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Hands-on: Soldering
Step 24: Attach test battery and watch what you made
NOTE: If it doesn’t work, detach battery immediately
and have it inspected
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Hands-on: Soldering
When completed, please wait for further instruction
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Timing Circuit HW #4
Class #07
Colorado Space Grant Consortium
Hands-on: Timing Circuit, Power & Camera
- Your team will do the following:
- Build the timing circuit
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Hands-on: Timing Circuit, Power & Camera
- Test with 12 V power
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Hands-on: Timing Circuit, Power & Camera
Step 13: Install A23 batteries (12 V) into specially
made case
Make sure switch is ON
Step 14: Use voltmeter to verify you have 12 V
Hands-on: Timing Circuit, Power & Camera
Step 15: Insert
the black wire
from the battery
pack into GND
(Should be “-” of
battery).
Hands-on: Timing Circuit, Power & Camera
Step 15b: Insert the green wire from the switch
into the +12V terminal on the timing circuit
(should be “+” of battery)
Step 15c: Connect
the black wire
from the switch to
the red wire from
the batteries by
snapping together
the connectors
Hands-on: Timing Circuit, Power & Camera
Step 16: Flip switch ON (should here a click and see
red LED light up)
NOTE: If not, flip switch OFF and have timing
circuit inspected
Hands-on: Heater Circuit
Step 25: Twist all the Red wires from the 9V connector
together and solder them to the single Blue wire in your
kit. (Do not solder red wire from switch)
Hands-on: Heater Circuit
Step 26: Twist all the Black wires from the 9V
connector together and solder them to the black wire
from the switch.
Hands-on: Heater Circuit
Step 31: Attach 3 flight batteries and turn switch on.
Your heater will get extremely hot with in 1 to 2
minutes. If longer, please let me know.
HOBO ?
Class #06
Colorado Space Grant Consortium
Questions?
Class #06
Colorado Space Grant Consortium