SpudFiles

Posted: **Tue Jul 05, 2011 9:51 am**

Saw this on endo, and used on a spudgun! Brilliant!

Posted: **Tue Jul 05, 2011 9:57 am**

I remember seeing that one before. It is built by an amature radio operator. It is a line tossing cannon for putting antenna wire up in trees. The spool on the muzzle is fly fishing supplies.

Posted: **Tue Jul 05, 2011 10:01 am**

Technician1002 wrote:It is a line tossing cannon for putting antenna wire up in trees. The spool on the muzzle is fly fishing supplies.

I've seen this type of launcher before too, but what is of interest here is the "scope".

From the author:

I am currently working on a BBTS or Basic Ballistic Trajectory Solver for the Android OS. The idea is to be able to input the distance to the tree, assuming the tree will be located under the peak of the trajectory, Tree Height + some padding , Tennis ball weight (for drag force calculation, I have data for the average drag coefficient of a tennis ball), Air density/Altitude (again for drag) and additional drag value (caused by line, the ball is pulling - there is no easy way to model this so it needs to be determined experimentally and entered as correction to the drag force)

The output will be a firing solution - Angle and required Muzzle Velocity. The tricky part will be to establish the correlation between the air tank pressure and the initial velocity of the ball leaving the barrel, but I'll work on a way to figure it out (police radar?).

A much simpler application could be written where inputs like target distance, wind speed and direction, temperature, altitude etc. could be fed and an aimpoint be calculated.

Posted: **Tue Jul 05, 2011 10:04 am**

Wow thats cool! I wonder if its available for ipod, if so, I may stop spending money on spudguns and work on getting an ipod.

Posted: **Tue Jul 05, 2011 10:12 am**

OMG!!
I was dreaming about something like this... now it's a reality

Posted: **Tue Jul 05, 2011 10:51 am**

what site do you get this at in the android market???

Posted: **Tue Jul 05, 2011 11:14 am**

mattyzip77 wrote:what site do you get this at in the android market???

not that hard to find...
https://market.android.com/details?id=c ... rch_result

Posted: **Tue Jul 05, 2011 7:54 pm**

I doubt this'll get ported, android was made for devs, apple for money (yes, I'm very biased).

As soon as my data pack comes through, I'll be getting it, thanks for the link. I'll just have to zero it.

Posted: **Tue Jul 05, 2011 8:09 pm**

Man im so happy I have a Sony Ericsson x10 xperia

Edit: Dammit its no compatible with my phone

Posted: **Tue Jul 05, 2011 8:51 pm**

Goddamnit JSR you beat me to it!

Very cool nOnetheless, I am an iPhone user, found a similar mapping app but don't think it's quite resale, I'm gonna do some testin. Who knows, this could be the next big thing in spudguns

Posted: **Wed Jul 06, 2011 12:09 am**

JDP12 wrote:Goddamnit JSR you beat me to it!

At least it brought you out of the woodwork, was wondering where you had disappeared to

Posted: **Wed Jul 06, 2011 10:07 am**

Haha yes I haven't been round much, I've been too broke to build anything. Refurbishing my toolies valve tho and hoping to get that all done and make into a high pressure "grenade launcher"style gun. I'll post pctures

Posted: **Wed Jul 06, 2011 1:19 pm**

That´s so f**king cool

Now I´m going to buy a new phone for this

have anybody tried yet? witch phone is compatible with that?

Posted: **Wed Jul 06, 2011 2:32 pm**

I agree; this definitely merits a new phone. I need a plugin to do the ballistic calculations, and perhaps estimate range and correct for wind.

Posted: **Wed Jul 06, 2011 2:50 pm**

there is a similar one for the iphone called the geocam, its free. the display doesn't look exactly the same, but more or less the same thing.

SpudFiles

digital scope using an android!

digital scope using an android!