1. Student Hands On Training Workshop (SHOT 2007)
June , 2007

2. Student Hands On Training Workshop (SHOT 2007)
Gateway To Space
ASEN / ASTR 2500
Class #09
T-46
Colorado Space Grant Consortium
June , 2007

3. Student Hands On Training Workshop (SHOT 2007)
Today:
- Soldering 101
- Next time –
Rocket History (Maybe)
- Grades – Next week
- HW 05 – Kendra will have it ready Thur
- Proposal update…
- Will send Wednesday so you can review
- Team meeting time
- Hardware check out, HW 04, feedback
June , 2007

4. Student Hands On Training Workshop (SHOT 2007)
Meeting Times:
Soldering 101
- Rocket History (Maybe)
- Proposal update…
- Team meeting times
June , 2007

5. Student Hands On Training Workshop (SHOT 2007)
Soldering 101
Colorado Space Grant Consortium
June , 2007

6. Student Hands On Training Workshop (SHOT 2007)
Soldering:
June , 2007

7. Student Hands On Training Workshop (SHOT 2007)
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
June , 2007

8. Student Hands On Training Workshop (SHOT 2007)
PCB – printed circuit boards
Solder Pads
Soldering
Top View
Side View
Circuit Board
Resistor
June , 2007

9. Student Hands On Training Workshop (SHOT 2007)
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.
June , 2007

10. Student Hands On Training Workshop (SHOT 2007)
Prep Step 4: Tinning the iron (close-up)
June , 2007

11. Student Hands On Training Workshop (SHOT 2007)
Soldering
Iron
June , 2007

12. Student Hands On Training Workshop (SHOT 2007)
Move soldering iron until tip is
touching wire & solder pad
June , 2007

13. Student Hands On Training Workshop (SHOT 2007)
Move solder to touch edge of tip.
Solder
June , 2007

14. Student Hands On Training Workshop (SHOT 2007)
Hold until solder melts
on tip by wire
Solder
June , 2007

15. Student Hands On Training Workshop (SHOT 2007)
Move solder back to touch wire only
Solder
June , 2007

16. Student Hands On Training Workshop (SHOT 2007)
Move solder in to form a
small pocket
Solder
June , 2007

17. Student Hands On Training Workshop (SHOT 2007)
Move soldering iron tip up. This
will drag solder up with it.
Solder
June , 2007

18. Student Hands On Training Workshop (SHOT 2007)
Look for shinny fillets
June , 2007

19. Student Hands On Training Workshop (SHOT 2007)
Soldering Tips
Make sure tip is hot
Clean & tin tip
Keep tip clean by using wet sponge and cloth
Heat until the parts are hot enough to melt solder
Hold until solder flashes around pad
Do not put too much solder on
June , 2007

20. Student Hands On Training Workshop (SHOT 2007)
TIPS:
workmanship.nasa.gov
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.
Also clip the leads in this fashion.
Bend resistors and diodes using your plastic tool as shown.
Example of a good solder filet
June , 2007

21. Student Hands On Training Workshop (SHOT 2007)
Tinned Copper Traces
Top View
June , 2007

22. Student Hands On Training Workshop (SHOT 2007)
Soldered
Top View
Solder bridge shorting two traces - bad, bad, bad
But, can be fixed by reheating or using solder sucker
June , 2007

23. Student Hands On Training Workshop (SHOT 2007)
Board Safety:
Caution:
Many of the components used in this workshop are sensitive to electrostatic discharge (ESD). Please ensure that you are wearing your protective wrist strap at all times. There will be a warning slide when components are ESD and heat sensitive.
Clipping leads can sometimes cause them to separate in a rapid manner that could cause injury. Please take caution when clipping leads. Wear your safety glasses at ALL TIMES!
June , 2007

24. Student Hands On Training Workshop (SHOT 2007)
Reading a Resistor:
The resistors in this workshop have already been organized by value.
In the event that your resistors get mixed, please refer to the chart at the left to classify your resistors, or use your multimeter.
If you are unsure, don’t hesitate to raise your hand and ask for assistance.
June , 2007

25. Student Hands On Training Workshop (SHOT 2007)
Pre-Bending:
Pre-Bending 101:
Pre-bending is a technique that allows components to be easily inserted into a PCB.
Pre-bending also allows components to lay more flush with the board.
Bending components to the correct bend radius takes practice, but mastering the technique will reap rewarding benefits!
June , 2007

26. Student Hands On Training Workshop (SHOT 2007)
Pre-Bending:
Pre-Bending 101:
Start with the bending and prodding tool in the position shown in the top picture.
Choose a location along the length of the tool that will yield the appropriate bend radius.
Use your thumb to bend the lead such that the component and lead are orthogonal.
90°
June , 2007

27. Student Hands On Training Workshop (SHOT 2007)
June , 2007

28. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering 14
June , 2007

29. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
- Get into your teams
- Each person on the team will solder their own circuit
- You and your team will have 50 minutes
- Let me know when you are done 15
June , 2007

30. Student Hands On Training Workshop (SHOT 2007)
Prep Step 1: Tool Layout
Prepare tools for the construction process.
Put on your safety glasses.
June , 2007

31. Student Hands On Training Workshop (SHOT 2007)
Prep Step 2: Grounding
Put on a static strap to remain grounded. Also make sure the strap is tight across your wrist.
This will protect any parts from electro-static discharge (ESD) and its harmful effects.
June , 2007

32. Student Hands On Training Workshop (SHOT 2007)
Prep Step 3: Soldering Station
Turn on the soldering iron
Set the temperature control on the soldering iron to a temperature less than 700 °F and greater than 450 °F.
- As a general rule use a temperature in the range between 550 and 650 degrees Fahrenheit.
June , 2007

33. Student Hands On Training Workshop (SHOT 2007)
Prep Step 3: Soldering Station
June , 2007

34. Student Hands On Training Workshop (SHOT 2007)
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.
June , 2007

35. Student Hands On Training Workshop (SHOT 2007)
Prep Step 4: Tinning the iron (close-up)
June , 2007

36. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
Step 1: Distribute solder kits among team
You will have to share the soldering stations
Help each other learn the techniques 16
June , 2007

37. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
Step 2: Layout kit (Socket not shown) 17
June , 2007

38. Student Hands On Training Workshop (SHOT 2007)
Voltmeter is very useful -
June , 2007

39. Student Hands On Training Workshop (SHOT 2007)
Voltmeter 101: -
This is the set up typically used
June , 2007

40. Student Hands On Training Workshop (SHOT 2007)
Voltmeter 101:
Use this setting to check resistor values -
June , 2007

41. Student Hands On Training Workshop (SHOT 2007)
Voltmeter 101:
Use this setting to check DC voltage -
June , 2007

42. Student Hands On Training Workshop (SHOT 2007)
Voltmeter 101:
Use this setting to check continuity -
June , 2007

43. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
Step 3: Look at board, find reference point
Install Side 18
June , 2007

44. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
Step 3: Look at board, find reference point
Solder Side 19
June , 2007

45. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
Step 4: Flip board over and solder 8 pin socket
Step 5: Install 555 timer. Small circle placed over pin hole “1” 20
June , 2007

46. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
Step 6: Flip board over and bend chip leads out
DO NOT SOLDER AT THIS TIME 21
June , 2007

47. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
Step 7: Install 120 kΩ resistor (Brown, Red, Yellow) 22
June , 2007

48. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
Step 8: Install 33 kΩ resistor (Orange, Orange, Orange) 23
June , 2007

49. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
Step 9: Verify resistors
120 kΩ
Brown, Red, Yellow
33 kΩ
Orange, Orange, Orange 24
June , 2007

50. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
Step 10: Flip board over Step 11: Solder Resistors
120 kΩ
Brown, Red, Yellow
33 kΩ
Orange, Orange, Orange 25
June , 2007

51. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
Step 12: Inspect solder joints and trim leads 26
June , 2007

52. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
Step 13: Flip board over and install capacitor
Gray strip indicates “negative” lead
“-” Lead 27
June , 2007

53. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
Step 14: Verify capacitor is installed correctly
“-” Lead 28
June , 2007

54. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
Step 15: Flip over board and solder capacitor
“-” Lead 29
June , 2007

55. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
Step 16: Verify solder joint and clip leads 30
June , 2007

56. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
Step 17: Install RED LED over 120 kΩ Resistor
Negative side is facing edge of board
Negative Lead 31
June , 2007

57. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
Step 18: Install GREEN or YELLOW LED over 33 kΩ Resistor. Negative side is facing edge of chip
Negative Lead 32
June , 2007

58. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
Step 19: Flip board over and solder LED leads 33
June , 2007

59. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
Step 20: Solder chip to board. Go slow
Step 21: Verify solder joints and check for solder bridges 34
June , 2007

60. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
Step 22: Install 9V battery clip to board 35
June , 2007

61. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
Step 23: Flip board over and solder battery leads 36
June , 2007

62. Student Hands On Training Workshop (SHOT 2007)
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 40
June , 2007

63. Student Hands On Training Workshop (SHOT 2007)
Hands-on: Soldering
When completed, please wait for further instruction 38
June , 2007

64. Heaters
ASEN / ASTR 2500
Colorado Space Grant Consortium

65. Today:

66. Environments at 30 km:
- You need to do something to keep your systems warm
- Colorado history has shown payloads (batteries) begin to fail below -5°C
- Hand warmers don’t work well without air (O2)
- You will use an active heater

67. Environments at 30 km:
• BalloonSats can do real science at 100,000 feet
• Discoveries can be made
• Atmospheric studies can be done
• Engineering challenges are extreme
• Enough unknowns to catch the mind of students

68. Hands-on: Heater Circuit
- Dry ice test results have been excellent

69. Hands-on: Heater Circuit
Kit includes:
3 9 Volt batteries (for flight only)
1 Perf Board
3 Ceramic Resistors (4 5W)
3 9 V connectors
1 White wire
1 Blue wire
1 Red wire
1 Black wire
1 Switch
1 Female connector with red and black wire

70. Hands-on: Heater Circuit
Set out kit

71. Hands-on: Heater Circuit
Layout Resistors on Perf Board

72. Hands-on: Heater Circuit
Layout Resistors on Perf Board
Front
Back

73. Hands-on: Heater Circuit
Fold over the leads from two of the blocks and solder them together

74. Hands-on: Heater Circuit
Snip the leads that you just soldered together

75. Hands-on: Heater Circuit
Fold over the opposite two leads and solder so that all of the blocks are connected in parallel then clip the ends of the leads

76. Hands-on: Heater Circuit
Solder resistors in series using leads of resistors 4Ω 4Ω 4Ω

77. Hands-on: Heater Circuit
Twist all the Red wires from the 9V connector together and solder them to the single BLUE wire in your kit

78. Hands-on: Heater Circuit
Twist all the Black wires from the 9V connector together and solder them to the single black wire from the female connector

79. Hands-on: Heater Circuit
Check continuity for all “-” and “+” terminals to each other

80. Hands-on: Heater Circuit
Check continuity for all “+” terminals of the battery with the end of the single BLUE wire
Check continuity for all “-” terminals of the battery with the end of the single BLACK wire

81. Hands-on: Heater Circuit
Check continuity for all “-” terminals of the battery with the BLACK wire on the connector

82. Hands-on: Heater Circuit
Put electrical tape on solder joints

83. Hands-on: Heater Circuit
Solder the single BLUE wire from 9V connector to one end of the resistor string and the RED wire from the female connector to the other end of the resistor string 4Ω 4Ω 4Ω

84. Hands-on: Heater Circuit
Connect the Switch (Black to Black, Red to Red)

85. Hands-on: Heater Circuit
Final Product

86. Hands-on: Heater Circuit
Attach 3 flight batteries and turn switch on. Your heater will get extremely hot with in 1 to 2 minutes. If it takes longer, please let me know.

87. Hands-on: Heater Circuit
Turn switch off, disconnect the switch from the heater, leave batteries connected

88. Student Hands On Training Workshop (SHOT 2007)
Questions?
Colorado Space Grant Consortium
June , 2007