Eggtimer Rocketry Flight Computer Bedienungsanleitung

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Inhaltsverzeichnis

Seite 1 - User’s Manual

- 1 - Eggtimer TRS Flight Computer User’s Manual Firmware Release 1.4K Board RevA5 © 2014 Eggtimer Rocketry All Rights Reserved

Seite 2

- 10 - from the “-“ wire. You can also use solid wire, but solid wire is harder to work with and has a tendency to break after being bent a few tim

Seite 3 - Before You Start…

- 11 - possibly a whole flying weekend. You CAN use a battery as small as 200 mAH if you have a small rocket and know that it’s not going to be “on

Seite 4 - Eggtimer TRS Features

- 12 - if you’re using as 9v battery you should replace it if it’s under 7.2v (80% of its rated value) because its voltage and current-sourcing abil

Seite 5 - Limited Warranty

- 13 - Using Your Eggtimer TRS with the Eggfinder LCD Receiver The Eggtimer TRS is designed to be used with the Eggfinder LCD receiver. In additi

Seite 6

- 14 - This is the standard Eggtinder LCD “welcome” screen, and it will be displayed for about 5 seconds. You will then see this screen: This

Seite 7 - Meet the Eggtimer TRS

- 15 - The Eggtimer TRS/Eggfinder LCD Interface The Eggfinder LCD receiver has a two-line x 16 character LCD display, and one button. When in ter

Seite 8

- 16 - This screen is where you would enter your Flight Settings (Drogue mode and Main deployment altitude). It is also where you go to save your s

Seite 9 - A Note on Wiring

- 17 - The Check Status Menu The first menu that you will see when you start up is the Check Status menu. This shows you several things about yo

Seite 10

- 18 - Display/Change Settings Menu One of the nice things about having the Eggfinder LCD receiver is that it makes it really easy to change your

Seite 11 - General Battery Procedures

- 19 - This setting turns the Drogue channel off, for example if you were going to use motor-deploy for the drogue or even the main chute for a s

Seite 12

- 2 - Important Regulatory Information This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (

Seite 13 - Version 1.09d

- 20 - Saving Your Flight Settings, and Starting a Flight Once you’ve displayed and/or changed your settings, you can do several things: • Discard

Seite 14

- 21 - Typically what you will most likely do is to change your settings at your work table with the deployment power off and leave it on the “Save

Seite 15

- 22 - Programming Your Eggtimer TRS with the USB Cable The Eggtimer TRS can be programmed from just about any USB-compatible computer using a USB

Seite 16

- 23 - Eggtimer TRSEggtimer TRSEggtimer TRSEggtimer TRS 1.1.1.1.4K4K4K4K Flight Settings Flight

Seite 17

- 24 - This setting controls the Main deployment channel. This channel is typically used to deploy the large “main” parachute, at a pre-programmed

Seite 18 - Display/Change Settings Menu

- 25 - Programming the Frequency, ID Code, and Device Name All Eggfinder GPS units are shipped on 915 MHz with an ID Code of zero. Using the USB d

Seite 19

- 26 - Flying Your Eggtimer TRS Once you’ve programmed your Eggtimer TRS, you are ready for a flight. In general, a generic flight prep procedu

Seite 20

- 27 - Count the number of beeps to see what caused the error (there may be more than one error) Take the rocket off the rod/rail, open up the paylo

Seite 21

- 28 - The beep codes are: Number of Beeps Problem 1 Battery Low Error (< 6.5v) 2 Altimeter Sensor or Hardware Error 3 GPS Error (no feed)

Seite 22

- 29 - Mach Transition… As your motor continues to burn and the velocity increases, if the velocity exceeds 800 ft/sec aerodynamic shock wave pre

Seite 23 - Field Descriptions:

- 3 - Important Links: FCC Part 15 (governing unlicensed intentional emitters) http://www.ecfr.gov/cgi-bin/text-idx?SID=adb12f74b498e43ec453f7899d9

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- 30 - When Nose-Over is detected, the Eggtimer TRS begins using the Descent Samples value for altitude sampling. This setting is very low, 2 samp

Seite 25

- 31 - Displaying Your Flights with the Eggfinder LCD Receiver One of the nice things about having an Eggfinder LCD receiver with the TRS is that y

Seite 26 - Flying Your Eggtimer TRS

- 32 - To cycle through the screens, simply TAP the button… each tap will take you to the next screen. This is the time-to-apogee for that

Seite 27

- 33 - Downloading Flight Data with the Data Cable The Eggtimer TRS records your last 32 flights into its flight memory, reporting three types of

Seite 28

- 34 - operations, you can save them separately by simply closing the buffer after downloading the summary data, then opening it again for the detai

Seite 29

- 35 - The flight status is updated by the Eggtimer TRS as the flight progresses, and saved into the flight memory. In the event that for some reas

Seite 30

- 36 - An Excel scatter graph from this data looks something like this: -10000100020003000400050000 20000 40000 60000 80000 100000 120000 14000

Seite 31

- 37 - Building Your Rocket to Use the Eggtimer Mounting First things first… the Cardinal Rule of tracker mounting is KEEP THE ANTENNA AWAY FR

Seite 32

- 38 - OUTSIDE of the AV bay, away from the allthreads. To do that, you will need to install an RP-SMA connector instead of the wire antenna, and y

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- 39 - may be living… check with your local fire marshal if you aren’t sure. If you can’t test in your backyard, check with your local club to see

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- 4 - The Eggtimer TRS works in conjunction with the Eggfinder receivers, either the Eggfinder RX “dongle” receiver that plugs into the USB port of

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- 40 - Air Pressure Ports For the altimeter to work properly, there must be an undisturbed exposure to the outside air pressure. This is a little

Seite 36

- 41 - 4) Multiply #1 and #3 11.25 5) Divide by 1500 .0075 6) Take the square root:

Seite 37 - Mounting

- 42 - Appendix A – Special Functions There are some special functions that are accessed from the settings screen that are not on the menu. In g

Seite 38 - Multiple Deployment Hints

- 43 - Hold the Button down and release it to start the dump. The memory dump format is: Page No., Page Address, Memory Address, High Byte, Lo

Seite 39

- 44 - Appendix B – Deployment Channel Testing You must perform a Master Reset before you can perform deployment channel testing, see the Eggtimer

Seite 40 - Air Pressure Ports

- 45 - If you press and release the button, you will see You can cycle through the channels by tapping the button. Select whichever channel

Seite 41

- 46 - To test the Drogue deployment channel, enter the monitor mode by holding the Button down while turning on the Eggtimer TRS. You will hear a

Seite 42 - Memory Dump

- 47 - Appendix E - Specifications Pressure Sensor: Type Bosch BMP-180, accuracy rated to approx. 9000 m (29,500 ft) Accuracy Approx 1m (3

Seite 43

- 48 - Eggtimer TRS Quick Reference (Release 1.4K) Typical Flight Sequence 1) Long Beep – Power On 2) Slow Beep-Beep for 45 seconds – Eggfinder LCD

Seite 44

- 49 - • To update the real-time readings on the right-hand side, press the ENTER key • To change values: press the LETTER of the option, use +/-

Seite 45

- 5 - Other Features Can be programmed and armed remotely using an Eggfinder LCD receiver Also programmable using USB-TTL data cable (not includ

Seite 46

- 50 - Eggtimer TRS & Eggfinder LCD Menus Startup Sequence • Turn on Eggtimer TRS • Turn on Eggfinder LCD (Displays for 5 secs…) (Display

Seite 47 - Appendix E - Specifications

- 51 - Check Status Menu • HOLD button for 1 second and release to select… • TAP button to exit NOTE: If either deployment channel is

Seite 48 - - 48

- 52 - | V • TAP button to go • TAP button to to go next value… to next item… • Hold button for 1 sec. • Hold b

Seite 49 - - 49

- 53 - | | V | | V | | V | | V • TAP to redisplay flight milestones • HOLD for 1 sec

Seite 50 - Startup Sequence

- 54 - | Hold for 7 secs. | to start test V | • Beeps for 10 sec

Seite 51 - - 51

- 6 - will be more than happy to give you advice and we might be able to help you find your error if you send us some high resolution pictures, to s

Seite 52 - Display Flights

- 7 - Meet the Eggtimer TRS The Eggtimer TRS is a barometric altimeter-based flight computer with two deployment channels and an integrated GPS RF

Seite 53 - Deployment Testing

- 8 - no user intervention or programming required. This is the same logic that has been proven in the classic Eggtimer for hundreds, if not thousa

Seite 54 - - 54

- 9 - Reset Pads (RST) When shorted, the Reset terminals put the Eggtimer TRS “on hold”, i.e. resets it so that it does nothing. When it is in res

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