Thanks Graham.
I cant find out what "neoprene balloon" is when I google it.
I found some on eBay. Is it the same as "weather balloon". Some items on eBay are named the same.

Can "normal" balloons be used? Or are they different and/or too thin and will pop at lower altitudes? Thanks.

Here are some more videos:
http://www.youtube.com/watch?v=bS42F82aGW8
http://www.youtube.com/watch?v=ZCAnLxRvNNc
http://www.youtube.com/watch?v=-cLaERJXKb8

Can you guys at least guess what kind of balloon is used and where I can get one?

https://www.youtube.com/watch?v=XoMN-zg7r3M

Can I do this myself? I'd like give a toy present to my kid that's "been in in space". I'm sure she'll love it.
Are there any instructions/tutorials on what I'll need for this? All I've heard is you need a camera, a phone with GPS and a box (styrofoam box?) to hold those, and a helium filled balloon.
I don't know what kind of balloon and what software to track the GPS signal of the phone via my PC where I'm at, how to put them all together to avoid breaking, what kind of balloon to use, what kind of toy (material) and what kind of camera will be fine at that degrees and not break or get damaged, etc.
PS. I'm fully aware of the legality of this where I'm at, what authorities I should contact and where to release the balloon and what meterological website to use to caluclate the approximate area the box will land to avoid it falling on someone's property, road, etc.
Many thanks.

I understand most of members here cant answer some of my question, but I think you will at least know what kind of balloon(s) to use. And I see nowhere else to ask this.

Hi Pam. That's just an example image. The one I made is with 11'' balloons. A balloon like that can float with a led light put in them with 3 button cell batteries.
I've read that a helium filled balloon can lift about 14 grams. If that's true, and please tell me what is, a 136 balloons used for my heart can lift 1.904 kilograms.

Sonia, I don't know what you mean. Btw, I havent asked how to make the design, I've asked how to make it floatable, which you believe is not possible. I can make the designs, thanks.

Im still not getting this.

I want to buy a helium tank.

It is 10 Litres.

And one "atmosphere" of helium in it costs $1.

I know ATM is a unit of pressure, but dont get more than that.

How do I know how much ATM I need for N sized balloon?
How do I know how much ATM an N Litre tank can store?

Thanks.

Paying for how much though? How much can you fill with that?

I'm trying to buy a helium tank locally and I'm given the price of 0.6-1$ for 1 atm. And I'm told that their 1 atm can fill one regular balloon. I searched the internet and found that balloon tanks sold internationally is <100$ for a tank that can fill about 1000 balloons. I lost the link to that company's chart.

So am I being given ridiculous prices for helium by Armenian resellers or is it really that expensive? because this is just a hobby.

making things like this,


I'd like them to float.

Currently the armature I make with copper wire. it is slightly heavy, though by my calculations if I fill all the balloons with helium, it might float.

But I'm thinking if I can replace copper wires with something less heavy and maybe more rigid (not brake/deform) at the same time.
I've been suggested to try styrofoam and epoxy so far.

This is just a hobby thing for me so I'm not familiar with those. What will you guys suggest?

Im afraid not, its outdoors.

Hi Pam. I'd really want it to float. Any other material you think I could use to make the "frame" to make it lightweight enough?

I know most people here make animals by twisting balloons. I was thinking of something like this:

But an animal instead of a heart shape.
Do people do that? What is it called?

I've made a heart like the one above before, by making a copper wire heart and sliding balloon groups on it.
But I'm not sure if it will be a good idea for something complex like a teddy bear. I'd also like the animal to float and copper wire is heavy.
Any ideas?

Thanks.

Thanks.

What do you mean by "on a release"?

So am I wrong about the effect of mixing helium with air?

Thanks.
I can't find a brightness of the light from any seller...