2. 1 Student Hands On Training I (2009) Additional AVR Modifications For BalloonSat Flight Additional AVR Modifications For BalloonSat Flight

3. 2 - There are two additional modifications we need to do your team’s AVR board 1. Heater Circuit Integration 2. Camera Circuit Integration Both of these modifications will allow the AVR board to activate the heater and camera Additional Modifications:

4. 3 Student Hands On Training I (2009) Heater Circuit

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6. 5 - Your team will have 45 minutes to build an active heater circuit and integrate it to your AVR board - Instructions are in your handbook Hands-on: Heater Circuit

7. 6 Student Hands On Training I (2009) Environments @ 30 km Environments @ 30 km

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10. 9 How high do commercial jet fly? How high is the ozone layer? What are the layers of the atmosphere? ~10 km ~20 to 50 km Environments at 30 km:

11. 10 Troposphere Stratosphere Mesosphere Thermosphere Environments at 30 km:

12. 11 Capt. Joe W. Kittinger jumps from a balloon at 102,800 feet Forgot to mention, he exceeded the speed of sound with his body Environments at 30 km:

13. 12 Temperature varies in all directions as you climb through the different layers of the atmosphere Why? Solar Radiation (UV, IR) - Ozone Absorbs - Surface Heats - Convection Environments at 30 km:

14. 13 - Temperature can dip to -80°C - Biggest killer of past missions - Easy, repeatable science Environments at 30 km: Burst (30 km) Tropopause Coldest Launch Landing

15. 14 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 (O 2 ) - You will use an active heater

16. 15 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 Environments at 30 km:

17. 16 Hands-on: Heater Circuit - Dry ice test results have been excellent

18. 17 Hands-on: Heater Circuit Kit includes: 3 9 Volt batteries (for flight only) 1 Perf Board 3Ceramic Resistors (4 Ω @ 5W) 39 V connectors 1 White wire 1 Blue wire 1 Red wire 1 Black wire 1 IRL3302PbF MOSFET

19. 18 Hands-on: Heater Circuit Set out kit (Switch not used)

20. 19 Hands-on: Heater Circuit Layout Resistors on Perf Board

21. 20 Hands-on: Heater Circuit Solder resistors in series using leads of resistors 4Ω4Ω4Ω4Ω4Ω4Ω

22. 21 Hands-on: Heater Circuit Twist all the Red wires from the 9V connector together and solder them to the single red wire in your kit

23. 22 Hands-on: Heater Circuit Twist all the Black wires from the 9V connector together and solder them to the single black wire

24. 23 Hands-on: Heater Circuit Check continuity for all “-” and “+” terminals to each other

25. 24 Hands-on: Heater Circuit Check continuity for all “+” terminals of the battery with the end of the single RED wire Check continuity for all “-” terminals of the battery with the end of the single BLACK wire

26. 25 Hands-on: Heater Circuit Put electrical tape on solder joints

27. 26 Hands-on: Heater Circuit Solder the single RED wire from 9V connector to one end of the resistor string and the WHITE wire to the other end of the resistor string 4Ω4Ω4Ω4Ω4Ω4Ω

28. 27 Hands-on: Heater Circuit Locate the IRL3302PbF MOSFET

29. 28 Hands-on: Heater Circuit Solder the IRL3302PbF MOSFET to the AVR board as shown. Top pin should be at Column 15, Row 6. Do not trim the leads

30. 29 Hands-on: Heater Circuit Solder the IRL3302PbF MOSFET to the AVR board as shown. Top pin should be at Column 15, Row 6. Do not trim the leads.

31. 30 Hands-on: Heater Circuit Solder the IRL3302PbF MOSFET to the AVR board as shown. Top pin should be at Column 15, Row 6. Do not trim the leads.

32. 31 Hands-on: Heater Circuit Solder the other end of the WHITE wire to middle pin of the power MOSFET Should be at Column 17, Row 7

33. 32 Hands-on: Heater Circuit Create at solder bridge with middle pin of the MOSFET and end of the WHITE wire at Column 17, Row 7

34. 33 Hands-on: Heater Circuit Solder the BLUE wire to the Column 15, Row 4

35. 34 Hands-on: Heater Circuit Create at solder bridge with top pin of the MOSFET and end of the BLUE wire at Column 15, Row 4

36. 35 Hands-on: Heater Circuit Solder the other end of the BLUE wire to the Row D, Pin 4. Trim wire to minimum length

37. 36 Hands-on: Heater Circuit Solder the other end of the BLUE wire to the Row D, Pin 4. Watch out for solder bridges with other connections on the D block

38. 37 Hands-on: Heater Circuit Solder the single BLACK wire from the batteries to the bottom pin of the MOSFET at GND on Column 16

39. 38 Hands-on: Heater Circuit Create a solder bridge with the bottom pin of the MOSFET. DO NOT BRIDGE TO THE 3.3 HOLE.

40. 39 Hands-on: Heater Circuit Attach 3 flight batteries and set assembly aside.

41. 40 Student Hands On Training I (2009) Camera Integration Camera Integration

42. 41 Hands-on: Camera Integration Your camera has been modified so that it can be activated by shorting two wires together We will change the camera’s firmware later to allow it to autonomously take pictures once activated

43. 42 Hands-on: Camera Integration Your camera has a two wires coming out of the camera The connector will allow you to easily integrate the camera unlike the heater which will be a pain

44. 43 Hands-on: Camera Integration Those two wires are connected to a connector which is connected to a MOSFET (similar to the heater MOSFET) Connected to the MOSFET are two wires, BLUE and BLACK

45. 44 Hands-on: Camera Integration Solder the BLUE wire to PORT D, Pin 5

46. 45 Hands-on: Camera Integration Solder the BLACK wire to GRD

47. 46 -Take your camera out of the box Hands-on: Camera Integration

48. 47 -Insert the batteries Hands-on: Camera Integration

49. 48 - Disconnect the connector between the camera and the MOSFET and turn on camera by shorting the two pins together Hands-on: Camera Integration

50. 49 - Set the date and time - Power off the camera by shorting the two wires together again Hands-on: Camera Integration

51. 50 - Reconnect the camera to the MOSFET - Be sure that RED goes to RED and BLACK to BLACK Hands-on: Camera Integration - Set everything aside and get ready for the POWER ON SYSTEMS TEST (POST)

52. 51 Student Hands On Training I (2009) Questions?