Comments on: Underwater R.O.V. Project

By: Aurora

Aurora — Thu, 23 Jun 2011 14:10:39 +0000

You can order one from us using the link in the previous comment, or if you are an e-Science member (not just summer e-Camp), I send you two in the mail between month 2 and 3 of your enrollment!

By: Eric Stevens

Eric Stevens — Thu, 23 Jun 2011 13:22:51 +0000

i wanted to experiment with the small propeller, do you know were can i find it?

thanks

Eric

By: Aurora

Aurora — Wed, 22 Jun 2011 22:18:01 +0000

It’s the same propeller for the ROV as the Waterbot and the Hovercraft – it’s really a versatile propeller! And yes the car charger is a great choice for power. Use it with the 12V motors if you can find them, or 9V but keep an eye out for smoke (and a nose out) if the motors you opt to get can’t handle it.

By: Eric Stevens

Eric Stevens — Wed, 22 Jun 2011 18:36:04 +0000

ok when i opened the link it says 3-Blade Propeller
for the Hovercraft and Waterbot Project, witch is the big one? and i wanted to experiment with the small one to were can i find it? and i have a car charger that says for six & 12v batterys would that work for 9v or just 12 & 6v motors

thanks

By: Aurora

Aurora — Wed, 22 Jun 2011 13:12:58 +0000

No problem - happy to help! You can rip these off an old toy, or order them straight from us.

By: Eric Stevens

Eric Stevens — Tue, 21 Jun 2011 20:42:04 +0000

sorry i have so many questions but do younow where to buy propellers

By: Eric Stevens

Eric Stevens — Tue, 21 Jun 2011 18:34:29 +0000

so i have A car charger that says for six & 12v batterys would that work for 9v or just 12 & 6v motors

By: Aurora

Aurora — Tue, 21 Jun 2011 14:28:51 +0000

Yes, but then you’ll have to use 9V power, as 12V will burn out your motors. Note that the small 9V batteries in the grocery store do not have enough amperage for this project, so you’ll need to use a power supply. That’s why we suggest 12V motors, as car batteries are easy to find and use for this project.

By: Eric Stevens

Eric Stevens — Tue, 21 Jun 2011 13:38:33 +0000

can i use 9v motors

By: Aurora

Aurora — Thu, 16 Jun 2011 23:17:02 +0000

Not recommended for the ROV, because the ROV needs a more robust construction, what with water and car batteries involved. Index card and brass fastener switches are good for low-amperage circuits, like buzzers and LEDs, but when you start turning bigger motors, you want to use real components.

By: Eric Stevens

Eric Stevens — Thu, 16 Jun 2011 21:27:55 +0000

can I use home made DPDT switches out of paper clips & brass faseners or will that be too dangerous

By: Aurora

Aurora — Mon, 06 Jun 2011 16:17:19 +0000

I had to ask our pool manager for special permission, too. We also had luck in private swimming pools of friends, our small lake nearby, and a very large kiddie pool.

By: Eric Stevens

Eric Stevens — Mon, 06 Jun 2011 13:50:59 +0000

were can I use it i don’t now if they will let me use it at the local pool

By: Aurora

Aurora — Sat, 04 Jun 2011 16:23:02 +0000

We got ours from a place that still develops film here in town. You can use any small plastic container that will seal with a bit of hot glue. We do have the ROV essentials pack on our website that includes the canisters (we give you clear ones because they look way cooler), along with propellers, the DPDT switches, mesh, and more hard to find parts.

By: Eric Stevens

Eric Stevens — Sat, 04 Jun 2011 15:56:00 +0000

I can’t get film contianers, do you now how to find them?

By: Aurora

Aurora — Sun, 29 May 2011 22:46:08 +0000

Yes – you’ll want to connect the batteries in series: connect the plus of one to the minus of the other. Then run your wires from the ROV to the two remaining terminals: one of the wires connects to the positive on one and the negative terminal on the other. Does this help?

By: michele anderson

michele anderson — Sun, 29 May 2011 21:39:25 +0000

The shopping list specifies a 12-V battery, but suggests that 2 6-V latern batteries can be used. However, the video doesn’t show how to connect the wires to two batteries, but rather to a car charger. Any suggestions for how to accomplish this?

Thanks,

Michele

By: Aurora

Aurora — Wed, 04 May 2011 05:31:38 +0000

Yes – you can! I have a larger one called SeaFox that’s three times as big and uses bilge pumps (with the impellers removed and propellers attached). It’s so much more powerful, especially for my large camera and light array. I should take a picture of it – it’s sitting near the ceiling in my lab at the moment…

By: Kacey Sauve

Kacey Sauve — Tue, 03 May 2011 20:56:24 +0000

I wonder if it could be made larger.

By: Aurora

Aurora — Mon, 03 Jan 2011 17:55:21 +0000

You can find it at hardware stores, automotive stores, and hobby stores. It's called 'activator' or 'accelerator'. Here's a link to amazon. It's basically mineral oil, but you want it in a spray bottle so it's easy to use (don't get the brush-on type).

By: Kate Bechard

Kate Bechard — Mon, 03 Jan 2011 03:35:09 +0000

What is the manufacturer and part # of the spray catalyst for the glue? We’ve been trying to put this together but drying time is very long for the glue and would like to get the spray that you use to speed the drying time. Thanks!
-kate

By: Rob

Rob — Sun, 14 Nov 2010 14:45:51 +0000

This is the coolest project ever – I can’t wait to use it for my science fair project!