DIY Electronic Bilge Pump Switch
Every boat needs a bilge pump, but a bilge pump does not make any use if you do not have Electronic Bilge Pump Switch installed in your boat. This is uually the case with small and older boats. If you buy a new Electronic Bilge Pump Switch today it will cost you quite a bit compared to how much you will spend to make a Electronic Bilge Pump Switch yourself at home.
A while ago I was contacted by the owner of manialabs.wordpress.com. He published a simple tutorial to make your own Electronic Bilge Pump Switch and asked me to publish it on my blog. I liked the idea, becouse it is a very innovative product and most of DIY enthusiasts will know how to build it. In fact it is very simple so I am sure anyone can build it.
Making a Electronic Bilge Pump Switch
Over the years, I have installed several submerged float switches in the bilge of my boat. They’re supposed to run the bilge pump when the level of water in the bilge exceeds a certain level and then stop the pump after the water level is lower. They usually work well for the first year or two but inevitably fail. Sometimes they fail simply because they’re submerged in water constantly and they had a very small leak. Other times they failed probably because I left them underwater over the winter and they were frozen.
To improve upon this I wanted to switch, pun intended, from a submerged mechanical switch to a solid state, adjustable switch. I wanted to be able to remove as much of the switch from the water, hoping to extend its useful life. Of course there are a few commercial switches available but they’re not always customizable. Also, buying a packaged switch wouldn’t teach me anything about the circuitry required or give me the intimate knowledge on how they work.