Colorado Space Grant Consortium Timing Circuit HW #4 Class #07 Timing Circuit HW #4 Class #07.
Colorado Space Grant Consortium
description
Transcript of Colorado Space Grant Consortium
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Colorado Space Grant Consortium
Gateway To SpaceASEN / ASTR 2500
Class #06
T-58
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Today:
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- Announcements
- One Minute Reports
- HOBOs, Cameras, Foamcore, Insulation, Multimeters
- Next Tuesday is catch up and in class team time
Today:
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- Website now has presentations
- Give man a fish…
- Innovate ideas don’t have solutions
- Breadcrumbs (HW)
Announcements:
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Colorado Space Grant Consortium
FoamcoreASEN / ASTR 2500
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- BalloonSats are commonly made of foam core
- Foam core is a simple, low cost composite panel
- You will use hot glue and Xacto knives to create your box
- There is a OK way of building with foam core
- Cut individual pieces and glue them together
- This way works but is not the best and requires more “belts and suspenders”
Hands-on: Construction and Integration
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BalloonSat Construction:
- There is a BETTER way of building with foam core- Requires algebra and geometry
- See paper in back of your course book
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BalloonSat Construction:
- When cutting foam core, remember you are cutting through three layers
- Best to cut each layer individually
- Go slow, use metal edge ruler
- Be mindful
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- Step 1: Layout box design on foam core sheet
In the interest of time, each team will be given a pre-traced foam board (black with labels)
BalloonSat Construction:
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- Draw center lines between inner and outer lines
- All edge cuts are at 45 degree angles to the centerline
- Cut inside edges first and only through top paper and foam not bottom paper (hinge)
- Cut outside edges last but all the way through
- Go Slow and don’t cut the tables
- Please dispose of Xacto blades properly
Hands-on: Construction and Integration
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- Cut holes for switch and camera lens
- Cut hole through center for balloon attachment tube
Hands-on: Construction and Integration
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BalloonSat Construction:
- Step 3: Practice integration and make modifications
Hold box together and figure out how much insulation you want to use. Will affect how your components sit in box
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BalloonSat Construction:
- Step 4: Glue it together and strengthen corners
- Your template was designed using the “Better Method”
- After gluing, cover you seams with aluminum tape
- Please don’t go overboard, weight is still an issue
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BalloonSat Construction:
- Step 4: Glue it together and strengthen corners
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BalloonSat Construction:
Things to remember: You only have one
- Switches
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- Install switches to box and glue switches in place from back side before making electrical connections
- Keep switches on both sides and label ON/OFF positions
- Make sure to re-connect the switch
Hands-on: Construction and Integration
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- Balloon attachment tube hole should run through center of box on non-opening side
- Make hole diameter as close to tube diameter as possible
- Secure with paper clip
- Make sure paper clip does not interfere with inner diameter
Hands-on: Construction and Integration
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BalloonSat Construction:
Resources available for checkout:
- Soldering stations- ½” and ¼” foam insulation- Foamcore- Velcro- Tape- Peace and love
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Colorado Space Grant Consortium
MultimetersASEN / ASTR 2500
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Voltmeter is very useful
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Voltmeter 101:
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This is the set up typically used
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Voltmeter 101:
-
Use this setting to check resistor values
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Voltmeter 101:
-
Use this setting to check DC voltage
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Voltmeter 101:
-
Use this setting to check continuity
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Colorado Space Grant Consortium
HOBOsASEN / ASTR 2500
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Today:
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HOBO Data Logger
RHSensor
TempSensor
ExternalChannels
SerialPort
LEDIndicator
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HOBO Data Logger
RHSensor
TempSensor
ExternalChannels
SerialPort
LEDIndicator
Battery(back side)
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- Data Loggers our like our “Black Boxes”
HOBO Data Logger
Burst (30 km)
TropopauseColdest
Launch
Landing
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Step 4: Connect Temperature cable (TMC1-HA) to channel 4 on HOBO Computer
Hands-on: Temperature Experiment
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Step 7: Start HOBO Box Car 3.7 software
Hands-on: Temperature Experiment
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Step 8: Launch HOBO computer
Hands-on: Temperature Experiment
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Step 9: Check Battery & select “Enable/Disable Channels”
Hands-on: Temperature Experiment
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Step 10: Select Channel 4
Hands-on: Temperature Experiment
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Step 11: Select correct temperature cable
Hands-on: Temperature Experiment
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Step 14: Select Data sampling or interval
Hands-on: Temperature Experiment
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Step 15: Confirm Settings and select Start
Hands-on: Temperature Experiment
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Step 16: Unplug PC cable from HOBO
Hands-on: Temperature Experiment
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Take and Retrieve Data
Hands-on: Temperature & Solar Experiments
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Step 17: Give your HOBO sensor some data
Hands-on: Temperature Experiment
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Step 18: Connect PC Cable to HOBO
Step 19: Select Readout
Hands-on: Temperature Experiment
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Step 20: Verify data download
Hands-on: Temperature Experiment
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Step 21: Disconnect PC cable from HOBO
Hands-on: Temperature Experiment
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Step 22: Name Data
Hands-on: Temperature Experiment
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Step 23: View Data
Hands-on: Temperature Experiment
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Step 24: Change data channel
Hands-on: Temperature Experiment
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Step 25: View Data from Channel 4
Hands-on: Temperature Experiment
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Delay Start Feature
Hands-on: Temperature & Solar Experiments
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To save time tomorrow and launch day…
- IMPORTANT: Make sure laptop time and date is correct for Colorado Mountain Daylight Time
Hands-on: Temperature Experiment
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- Repeat Steps 1 through 13
- Step 26: Set sampling rate to 15 Sec
- This will give you over 8 hours of data
Hands-on: Temperature Experiment
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- Step 27: Select Delay Start
- Step 28: Set the date and time to 07-15-06 at 7:00 AM
- Step 29: Select Start
Hands-on: Temperature Experiment
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Step 30: Unplug PC cable from HOBO
Hands-on: Temperature Experiment
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Step 31: Store HOBO and cables in box
This concludes the set and initialization for the Temperature and Solar Experiments
Hands-on: Temperature Experiment
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Colorado Space Grant Consortium
HeatersASEN / ASTR 2500
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Today:
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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
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• 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:
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Hands-on: Heater Circuit- Dry ice test results have been excellent
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Hands-on: Heater CircuitKit includes:
3 9 Volt batteries (for flight only)1 Perf Board3 Ceramic Resistors (4 Ω @ 5W)3 9 V connectors1 White wire1 Blue wire1 Red wire1 Black wire1 Switch1 Female connector with red and black wire
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Hands-on: Heater CircuitLayout Resistors on Perf Board
BackFront
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Hands-on: Heater CircuitFold over the leads from two of the blocks and solder them together
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Hands-on: Heater CircuitSnip the leads that you just soldered together
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Hands-on: Heater CircuitFold over the opposite two leads and solder so that all of the blocks are connected in parallel then clip the ends of the leads
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Hands-on: Heater CircuitSolder resistors in series using leads of resistors
4Ω
4Ω
4Ω
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Hands-on: Heater CircuitTwist all the Red wires from the 9V connector together and solder them to the single BLUE wire in your kit
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Hands-on: Heater CircuitTwist all the Black wires from the 9V connector together and solder them to the single black wire from the female connector
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Hands-on: Heater CircuitCheck continuity for all “-” and “+” terminals to each other
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Hands-on: Heater CircuitCheck 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
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Hands-on: Heater Circuit
Check continuity for all “-” terminals of the battery with the BLACK wire on the connector
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Hands-on: Heater CircuitPut electrical tape on solder joints
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Hands-on: Heater CircuitSolder 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
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Hands-on: Heater CircuitConnect the Switch (Black to Black, Red to Red)
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Hands-on: Heater CircuitAttach 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.
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Hands-on: Heater CircuitTurn switch off, disconnect the switch from the heater, leave batteries connected
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Colorado Space Grant Consortium
CamerasASEN / ASTR 2500
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- The following instructions will walk you through the steps needed to change the firmware on this camera to take picture every 20 seconds
Canon A570 IS Mods:
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- The CHDK code was originally written by Rick von Glahn from Edge of Space Sciences (EOSS)
- These steps are performed with the camera modified to turn on and off with a external switch
- The steps to modify the hardware of the camera are contained in a different presentation
- 2GB can hold ~ 566 pictures
Canon A570 IS Mods:
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- This mod uses CHDK to add autonomy to a digital camera without the use of a timing circuit or further modifications to the camera
- CHDK is firmware enhancement
- It only works with Canon digital cameras
- Please see the following website for much more information http://chdk.wikia.com/wiki/CHDK
Canon A570 IS Mods:
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http://chdk.wikia.com/wiki/CHDK
Canon A570 IS Mods:
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- Take your camera out of the box
Canon A570 IS Mods:
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- Insert the batteries
Canon A570 IS Mods:
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- Turn on camera by touching two wires together
Canon A570 IS Mods:
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- Set the date and time
- Power off the camera by touching the two wires together again
Canon A570 IS Mods:
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- Insert SD card and close battery cover
(not all SD cards support this mod)
Canon A570 IS Mods:
1. 2.
3. 4. 5.
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- Set Camera to “AV” mode
Canon A570 IS Mods:
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- Turn on camera by touching two wires together
Canon A570 IS Mods:
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- Press the “MENU” button and format the card – Use the “Low Level Format” setting
Canon A570 IS Mods:
1. 2.
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Canon A570 IS Mods:
- Press the “MENU” button and format the card – Use the “Low Level Format” setting
3. 4.
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Canon A570 IS Mods:
- Press the “MENU” button and format the card – Use the “Low Level Format” setting
5. 6.
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- Power off camera and remove the SD Card
Canon A570 IS Mods:
1. 2.
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- Connect the SD card to your computer
Canon A570 IS Mods:
1. 2.
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- The files we are going to copy to the SD card contain a script (macro) that will take pictures about every 20 seconds after an initial boot up.
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- Open the “cu_gateway_fall_2009.bas” file
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- Open the “cu_gateway_fall_2009.bas” file
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- Open the “cu_gateway_fall_2009.bas” file
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- Open the “cu_gateway_fall_2009.bas” file
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- Save the “cu_gateway_fall_2009.bas” file
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- Copy the CHDK folder structure and files to the SD card
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- Switch the play/record button on the camera to “play”
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- Insert SD card and power the camera on.
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- Press the “MENU” button and press the left on the circle button until the “play” symbol is highlighted
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- Press up on the circle button and highlight “Firm Update”
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- Select “OK” and press “SET”
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- Camera should now be running the CHDK firmware.- May be default script or Gateway script.
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- Press the shutter button to stop the script but leave the camera on
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- Switch the play/record button on the camera to “record”
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- You should see “Default Script” and “<ALT>” in the bottom of the screen
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- With “<ALT>” showing, press the “MENU” button
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- “<ALT>” will be replaced by “<CNF>”
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- Use the control pad to move the cursor down to "Debug parameters" and click "SET" to select this option.
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- Move the cursor down to "Make card bootable...“- Press "SET" to select this option then select back and press “SET” again
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- Nothing should happen. This is OK- Power off camera.
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- Remove the SD card and slide switch to “LOCKED”
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Even though the card is in the “LOCKED” position it will be able to be written to via the CHDK firmware.
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- Power on the camera
- If the script that runs is the Gateway 2009 script than you can skip to end of these steps
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- Insert locked SD card and make sure the camera is in “RECORD” mode
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- Power on the camera
- “Default Script” and the “<ALT>” should be visible
- Press the shutter button to stop script
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- Insert locked SD card and make sure the camera is in “RECORD” mode
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- With “<ALT>” showing, click on the menu to get to the “<CNF>” screen.
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- Use the control pad to move the cursor down to "Scripting parameters" and push "SET"
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- On the “Script” menu select "Load script from file..."
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- On the "Select script file" screen, move the cursor to highlight "cu_gateway_fall_2009.bas>" and press "SET"
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- When you return to the “Script” menu ensure that "Script Autostart" is checked (a dot in its selection field).
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- Also make sure the “Current script” is correct
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- Now click "MENU” to save these changes to the configuration file
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- Turn off camera
- The next time the camera is turned on, it will run the script
- It will go through a series of camera setting changes which will take about 60 seconds
- Then the camera will begin to take pictures every 20 seconds until the card is full
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- Sometimes the script doesn't execute properly the first time it runs.
- If this happens, let it run it's course for around a minute or so then turn the camera off then on again and it should work fine
- It should continue to work just fine on every subsequent power up
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- Turn on the camera
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- You can turn the camera off anytime.
- If you wish to stop the script during execution just press the shutter release button and that will interrupt the execution of the script
- Next press the printer button to gain control of the camera without having to remove the card
- This is handy if you want to review photos, or do something else without the script running.
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- After the pushing the shutter, you must push the print button to have normal camera operation
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- Any setting you might make to the camera will be restored to factory default settings next time the script runs as that is the first action the script takes
- Once you interrupt a script it must be re-run from the beginning you can not PAUSE a script and RESUME it
- Pictures on card should be in the JPEG format not *.RAW format
- To delete pictures, you must remove card and lock
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- You can modify your code without reloading the firmware
- For example lets change the “sleep” value to 5000
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- Power off camera
- Remove SD Card
- Unlock SD Card
- Open CHDK/Scripts/cu_gateway_fall_2009.bas
- Scroll down to end of code and change sleep = 5000
- Save
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- Remove SD card and lock
- Insert SD card into the camera and power on
- Pictures should be taken every 8 to 10 seconds now
- I would suggest a 20 second (sleep = 16000) for 135 minute flight time
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- You can also “rem” out pieces of the set up or other functions but test first
- Camera is working, it shall also be working at the end of the semester
- Take good care of this camera
- Thank you.
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