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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.

LaunchPad AlTImeter without MSP430 Launchpad

Discussion about deployment systems including altimeters, timers, air speed flaps, servo systems, and chemical reactions.
motorcyclepilot
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Complete!

Post by motorcyclepilot » Mon Nov 23, 2015 9:37 pm

Original:
25 grams 54x66x19 mm (will fit in 54mm dia tube)
Picture 2.jpg
Miniature:
17 grams 58x24x17 mm (will fit in 27mm dia tube)
Picture 1.jpg
Room for improvement:
-A smaller, lighter piezo element.
-A custom PCB allowing for a smaller/lighter footprint.
-SMT components would allow for additional space/lighter overall weight.
-SPST switches.
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Alien Space Agency
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Re: LaunchPad AlTImeter without MSP430 Launchpad

Post by Alien Space Agency » Fri Dec 04, 2015 7:36 am

Okay, I have some questions about the design:
1. Is the MSP430 really optional? If it is, then what is its purpose?
2. Can the servo be removed? Can this masterpiece be an altimeter-only?


Nothing can stop a curious mind from inventing- Anonymous

uberpixel
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Re: LaunchPad AlTImeter without MSP430 Launchpad

Post by uberpixel » Fri Dec 04, 2015 11:14 am

Alien Space Agency wrote:Okay, I have some questions about the design:
1. Is the MSP430 really optional? If it is, then what is its purpose?
2. Can the servo be removed? Can this masterpiece be an altimeter-only?
No, the MSP430 is not optional. It is required for programming the IC. However once you've programmed the IC on the MSP430, you can remove the IC and plug it into the socket on the minimalist board. So, you need the MSP430, but can fly without it.

I believe the servo is optional and only necessary if you want to actuate something (parachute deploy typically) just after apogee.

Here is the link to the excellent build and programming instructions for the original version w/ MSP430:
http://www.uswaterrockets.com/documents ... manual.htm

-uberpixel



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