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A water rocket is a type of model rocket using water as its reaction mass. The pressure vessel (the engine of the rocket) is constructed from thin plastic or other non metallic materials (usually a used plastic soft drink bottle) weighing 1,500 grams or less. The water is forced out by compressed air. It is an example of Newton's third law of motion.

Android App for HK Altimeter

Discussion about deployment systems including altimeters, timers, air speed flaps, servo systems, and chemical reactions.
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bugwubber
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Re: Android App for HK Altimeter

Post by bugwubber » Thu Mar 13, 2014 5:28 pm

The Altimeter Bluetooth Transmitter has arrived. I have a lovely graph on my phone of me walking down and up my stairs.

It's not live telemetry but it's the next best thing.

You do have to physically switch from "record" to "set up" so that will have to be planned for. On the plus side, that keeps the Bluetooth transmitter off until it's actually needed. It also has a "stop" position on the swtich which is similar to "Off" so don't need to unplug the altimeter to turn it off anymore.

The instructions pdf reference Fly Dream but the device identifies as Hobby King. The instructions are a poor translation to English but they get the point across.


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Re: Android App for HK Altimeter

Post by bugwubber » Thu Mar 13, 2014 5:40 pm

Here's some pics
HK-A_2014313_1636.png
CAM00870.jpg
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Re: Android App for HK Altimeter

Post by bugwubber » Sun Mar 30, 2014 9:45 pm

Here's my first field test of the bluetooth radio. Worked flawlessly.

This is a screen output of the graphing app.
HK-A_2014330_133.png
In the graphing app you can do all of the same functions as the desktop. Selecting Height Mark will let you see height/ft per sec along the curve.

Need to plan to have aceess to the bluetooth module so you can switch between record, off, and transmit modes.

So far very happy with it .
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