Rocket Locator

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joeman
Rocket Crew
Rocket Crew
Posts: 333
Joined: Fri Mar 06, 2015 9:05 am

Rocket Locator

Postby joeman » Mon Mar 05, 2018 11:57 am

G'day,
Thought I'd share a very basic device to help locate rockets... possibly to use in Launch in March.

I built this over about 4 hrs, so expecting it to have a few flaws.

IMG_4785_sml.jpg


IMG_4786_sml.jpg


IMG_4787_sml.jpg


Haven't looked to see what is around...thought I'd just see what I could make :)

* It slides on to 5/16" shock cord.
* Uses 85db (at 30cm) buzzer... so you can hear it from a reasonable distance.
* Uses a 12 volt battery...like the ones you use in remotes.
* Uses Light Dependent Resistor (LDR) to ensure that when it is inside rocket tube, no alarm, minimal power usage.
* Relatively compact - container is 3-d print - 65 x 20 x 28mm
* Had to make up my own copper tabs to make contact with the battery.
* Relatively simple electronics...not much that can go wrong.

Possible improvements
* Would be nice to be able to solder the components on the board and THEN slide in... or perhaps all components EXCEPT buzzer.
* It would also be better if the components were on the other side, further out of harms way. At present I've put 5min areldite around them, to ensure they stay affixed.
* I still want to create a simple lid to keep the battery in.
* Add a small on/off switch
* Have two LDR 180 degrees apart, so less chance of light not being able to set the alarm off.
* Have holes in frame to "install" LDR sensors...keep them flush, but unexposed.

Enjoy!

Joe
L1 - Callisto (H133) - 11-Jan-2016
L2 - March Fly (1633K940) - 18-Mar-2018 - RSO

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SpaceManMat
Astronaut
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Posts: 2086
Joined: Mon Dec 15, 2008 9:56 pm
Location: Brisbane

Re: Rocket Locator

Postby SpaceManMat » Mon Mar 05, 2018 6:05 pm

Nice, how loud is it?

I’ve used personal alarms before, they can never be loud enough.
QRS: 124
AMRS: 32 L2 RSO
Highest Altitude: 13,647 feet
Fastest Flight: Mach 1.55
Largest Motor: CTI 1115J530 IM
Current Project: X Wing

joeman
Rocket Crew
Rocket Crew
Posts: 333
Joined: Fri Mar 06, 2015 9:05 am

Re: Rocket Locator

Postby joeman » Tue Mar 06, 2018 2:10 pm

Hi SpaceManMat
Relatively loud - 85DB at 30cm.

Need the whole case to vibrate (resonate?) and make a bit more noise...

Could probably spend endless hours trying to perfect it :)

Cheers

Joe
L1 - Callisto (H133) - 11-Jan-2016
L2 - March Fly (1633K940) - 18-Mar-2018 - RSO


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