Homebuilt ROVs Forum

Hello HomebuiltROVs, It is me again, two failed ROVs and a bit short in the pocket. Since attempting to build ROSEV, and Poseidon (MK1), I have returned with a bit more maturity, saved up money (pushing £200 GBP ($302 USD) if necessary) and a new plan! Poseidon MkII The second generation Poseidon is...

I'd definitely say that it's the limiting factor of your 9v battery that's producing the lower than expected 2.5 amp draw. To do the same thing with a battery capable of handling larger amperage loads you would definitely see a larger amp draw through your circuit, and possibly damage to your pump ...

Hi. I didn't see any specs posted on the battery that you are using to power your pump. So, just to point out an obvious question here; is the battery capable or producing an amperage draw greater than the 2.5 amps you are seeing? I'm guessing it probably is, but I just thought I'd ask. Erm, not to...

Yeah... your either reading/using the meter wrong or something else is amiss. 2.5 amps is way to low for a stall current. How are you hooking up the multimeter? Are you running the current through the meter or just attaching the leads to the pos. and neg. terminals on the battery? -Steve 8-) Hey, I...

Hi, I should point out this is without the tether attached. It is a bilge pump, I believe it is a Rule 800 which I have attached a set of computer fans to which are approximately 80mm across. I too am slightly suprised, especially when considering others on this forum claim that the motors they used...

My digital multimeter has just arrived from Amazon and I have connected it to my main motor (has the biggest prop on it and sall be used for vertical movement). In air it draw approximately 1 Amp, when I stop the motor with my hand it reaches 2.5 Amps. Does this mean that underwater it shall draw a ...

Hi, thanks for the information about the buoyancy. I haven't actually planned a depth for my ROV but since I am using non pressure rated plastic I shall most likely employ the resin to the camera compartement and then fill the electrical compartement with oil. I am planning on using polyethylene flo...

Hopefully these batteries shall handle well, since my ROV is small and is mainly open framed I shouldn't need too much power. Equally, I may change my motors to some small model car style motors instead of bilge pumps to reduce the power consumption. Something similar to Steve's Mabuchi fishing bobb...

Oh will I? Probably should revise my physics then :oops: I shall connect them in parallel then to get the maximum Amp Hours. I was planning on using these: http://www.rapidonline.com/Electrical-Power/Rechargeable-PJ996-batteries-and-charger-62263 (Full technical list can be found here) http://www.ra...

Thanks, I have removed the float from beneath the rear thrusters, if needs be I can always add more to the top to compensate! My main concern now, as pointed out is the amp draw from the thrusters but until my multimeter arrives from Amazon I can't do much to those as of yet but I almost certainly s...