Projects to use a bilge pump?

I have a 500 gph fully submersible rule bilge pump that is not needed for anything. I've been looking around and trying to find a use for it. I feel like the possibilities are endless yet I can't think of anything. It's a 12 volt 2.5 amp pump. Any ideas?

Question by Kirschbj 3 years ago  |  last reply 6 weeks ago

When a load is rated at 12 volts and hooked up to a 12 volt battery, does it consume all 12 volts?

This may seem like a very dumb question but I took electronics two years ago as a high schooler and cannot seem to remember much about it. So I have a circuit that has a bilge pump hooked up in series with a 12 volt battery. The bilge pump says 12 volts, I know that that means it must have a 12 volt supply, but if I hooked it up with a 12 volt battery, would there be any left over volts to say, power a small light? Here are links to the battery and bilge pump I purchased from Amazon:;=1426121717&sr;=8-1&keywords;=rule+25s+marine+rule+500+automatic+marine+bilge+pump+500-gph+12-volt;=1426121874&sr;=8-2&keywords;=12+volt+battery All responses are greatly appreciated!

Question by cobrien2115 4 years ago  |  last reply 4 years ago

Solar Panel for Water Feature Pump

I'm looking for some suggestions to run a 12v/3A bilge pump in my outdoor water feature using a solar panel.  (This particular bilge pump has a built-in float switch to shut off the pump should the water level drop too low).  Solar is my preference because it'll only run during the day. 1) What size solar panel would I need for this?   Most are described by voltage and watts of power (24V, 10W).  I currently have a 24V/10W panel I'd like to configure for this but it's specs only show it producing less than 1 amp. 2) Should I look for plans to build an DC/DC converter(?) to limit the voltage to 12v? 3) Is there a way for me to boost the amperage? Thanks for any help, links, or suggestions! Dave Nagy Florida

Topic by DaveNagy 4 years ago  |  last reply 4 years ago

Bilge Pump vs Drip Irrigation for Low-Power Swamp Cooler

I'm building a small evaporative/swamp cooler for Burning Man that I would like to use as little power as possible (no solar panels). Traditional playa swamp cooler designs use a small pump to continuously irrigate the cooler pads. I'm thinking it might be more efficient to put the water in a reservoir that sits above the pads and gradually drips down on them. But since the pads need to be saturated for maximum evaporation, eventually the water will pool at the bottom and need to be pumped back to the reservoir by a pump controlled by a float switch. Which of these designs do you think would use less energy?

Topic by vagary 6 years ago  |  last reply 6 years ago

Would this Schematic work?

I am an amateur building a solar powered bilge pump and was wondering if the schematic I made would work. The idea of the schematic is that if switch 1 is open and switch 2 is closed, the 5w solar panel will charge the 12 volt battery. And if switch 1 is closed but switch 2 is open, the 12 volt battery will power the 2A bilge pump. My main question is which way will the current be flowing. I have drawn some arrows to show which way I think current will be flowing. Please correct me if I am wrong. Also tell me if any components need to be flipped around.  All answers are appreciated, Connor

Question by cobrien2115 4 years ago  |  last reply 4 years ago

A 15 volt Solar panel powering 12 volt dc bilge pump with no battery. How long will it stay working?

I did a little maker faire project to demonstrate how gravitational vortex power plants work. There was no electrical outlet available so I used a 15 watt solar panel to power a 12 volt 600 gallon per hour bilge pump to keep the demonstration running.  During the maker faire numerous people came between the sun and the panel and the thing stopped and restarted no problem.   I would guess that the bilge pump was running at half strength. (It has a 3 amp fuse so that would mean 36 watts is the max it can do?  An electrical engineer and a computer science student both said that I could probably leave the thing connected day and night and the low evening and morning current would not damage my bilge pump (or the solar panel).  It would just start up whenever the light got bright enough. Would anyone like to confirm that? Also, is there any arrangement with capacitors so that even the morning or evening sun will turn the thing (even if slowly) or is there a way to shunt that weak power to something useful (Like electrolysis of sea or  salty water to make bleach) and then go back to the bilge pump whenever the sun is powerful enough again? I would love to know because the project went really well and more could be done with it. Brian

Topic by gaiatechnician 6 years ago  |  last reply 4 years ago

12v footswitch help.

432-1212 from digi key.⟨=en&site;=us&keywords;=432-1212&x;=16&y;=22 Can this be wired up to work with a 12v battery. I'm wanting to wire this between my battery and bilge pump for a on and off switch it probably will get wet or I should say soaked.  I couldn't find any cheap footswitchs online so I'm thinking maybe I could make one?

Question by micha3l87 9 years ago  |  last reply 3 years ago

Can I generate power from with a generator installed on my water pipes?

Every time I flush the toilet, have a shower, wash the dishes, I think to myself... what a waste of water flow energy. I'm no electronics expert, but I figure connecting a 12 volt dc pump (like a boat bilge pump or something off the hardware store shelf) backwards inline (when I say inline... I mean no leaks... and just operates whenever I use water day to day) with the water supply to my house could generate a little top up trickle to some batteries along with a little solar & wind electricity generation project. Then I think, hang on, as soon as I hook the pump up to a battery... it will just try to pump water back out of my hot water tank house back down the pipe... so looking for ideas here? Anyone out there had a play with this concept?

Question by bekarts 10 years ago  |  last reply 5 years ago

Can I use a 555 timer to cycle on 1 minute and off 1 minute? Answered

I am kinda familiar with the 555 timer for flashing lights and such, but I am in need of a circuit which will cycle on for 1 min and off for 1 min. Can this device (555 timer) be used for such low frequencies. It will ultimately control a 12v relay to run a bilge pump in an Instructables evaporative cooler which I am making (this mod is my idea which I will share with the original inventor if it works). I guess that if the low frequency is possible I will also need a power transistor to step up to the voltage/current needed to operate the relay. Any help greatly appreciated........ Thanks, Peter :-)

Question by ppowell14 5 years ago  |  last reply 5 years ago

Relay control board for ROV

     I'm working on a control system for my ROV and I'm not sure what to do. I plan on having 2 wires for power then a cat-5 cable for control of relays/ video. Does anyone have any ideas, schematics, or plans for a relay based control system... Inputs to controls: - 12v boat battery - 5 pairs of 22 AWG solid wire ROV side hardware: - 3  500GPH attwood bilge pumps modified with 60mm model boat propellers - 1 A/V camera - 2 3 LED lights (9v per 3)   If anyone needs any extra information... The ROV is based off of the SeaFox ROV from  Please realize that it uses a near similar frame but different motors. Thanks to all who help. Citing and stuff: - ROV picture -

Topic by ry25920 9 years ago  |  last reply 9 years ago