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, 2008
(one per team and bring all hardware to class)
- New version on line along with new version of supplemental
slides needed for homework
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 (Connector, switch, & battery
pack will need to be built and are not provided as
shown)
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Hands-on: Heater Circuit
Step 20: Set out kit (switch will not be as shown.
You will have to add wires to switch. Connector is
not included)
Hands-on: Heater Circuit
Step 20: Set out kit (switch will not be as shown.
You will have to add wires to switch. Connector is
not included)
Hands-on: Heater Circuit
Step 20: Set out kit (switch will not be as shown.
You will have to add wires to switch. Connector is
not included)
Announcements:
- Proposals and Presentations due September 23, 2008
- Many are worried about this proposal…
- Presentations will be from 5 – 7 PM in ECCR 200
- 60 Days To Launch
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
Science Theme:
Science Theme:
One Minute Paper:
Presentation:
Presentation Templates
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
Prep Step 4: Tinning the iron
- Tin the tip of the soldering
iron by melting an inch or so
of solder on the tip.
- The iron will now look shiny
on the tip.
- Then wipe any excess solder
on the golden sponge.
- Now place the iron back into
the holder. Tinning your
soldering iron in this manner
will aid in future soldering.
RockOn! 2008
Prep Step 4: Tinning the iron (close-up)
RockOn! 2008
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
TIPS:
- Use caution when clipping leads
to avoid flinging metal across
the room.
- All soldering must achieve a
good solder filet on the pad as
shown for circuit reliability.
workmanship.
nasa.gov
Example of a good solder filet
- Also clip the leads in this
fashion.
- Bend resistors and diodes using
your plastic tool as shown.
RockOn! 2008
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
-
Voltmeter 101:
-
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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Terry, they are working ahead…
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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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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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HOBO ?
Class #06
Colorado Space Grant Consortium
Questions?
Class #06
Colorado Space Grant Consortium