Eggtimer Rocketry Flight Computer Uživatelský manuál stáhnout pdf (Strana 13)

have confirmed that it’s working you can always go back and remove the cable and put a

battery and Bluetooth®-Serial module in its place.

Mounting the USB-Serial Cable

__ Clip the leads of the USB-Serial cable just behind the little sockets

__ Strip 1/8” from the BLACK, RED, and WHITE wires. Tin the bare ends.

__ Clip the GREEN wire off close to the cable jacket (it won’t be used)

__ Solder the tinned wires into the pads on the board as follows:

BLACK - BATTERY “-“

RED – BATTERY “+” (NOT the pad marked “3.3V” next to the RF module!)

WHITE – RXD (next to the RF module)

__ Using a zip tie through each of the two sets of holes near the voltage regulator, tightly

attach the cable to the board. The end of the cable jacket should protrude about 1/8” from the

forward zip tie. Trim as necessary.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Assembly of your Eggfinder RX is now complete. Inspect the solder side of the board

carefully, looking for “cold” or incomplete solder joints. Cold solder joints appear dull instead

of shiny, and may appear as blobs of solder and not have the nice “wetting” of the pad that you

will see with good joints. A magnifying light is good for checking the board. We do NOT

recommend using flux remover or other cleaners on this board, they may not be compatible

with the no-clean flux used in the included solder.

Testing Your Eggfinder RX

To test your Eggfinder RX, you will need a working Eggfinder TX module on the same

frequency and either a laptop computer with a USB port or a USB power “block” like the ones

that come with many cell phones and tablets. For testing power-up, you only need to power up

the USB-Serial cable, obviously you will need a computer for displaying and saving the GPS

data.

Note: If you elected to skip the USB-Serial cable and use a Bluetooth®-Serial module and

battery instead, you will need to consult the manual for your module to establish a serial

connection. In general, you set your laptop/tablet’s Bluetooth® radio to “discovery” mode,

power up the Bluetooth® device, then select the device (typically named “HC-06”) and pair it

with your laptop/tablet using its password (typically “1234”).

To begin, power up your Eggfinder TX module: Press and hold the button until the GREEN

LED comes on and the RED LED on the RF module begins to blink. Plug the USB cable from

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Eggtimer Rocketry Flight Computer Uživatelský manuál Strana 13