The Perfect Pump

I’ve had two of these brushless DC pumps sitting around for a while now. They each originally had a solar panel connected, however it didn’t work very well, so I cut one off to use in another project. Today, I finally got around to actually verifying that the pump worked.

The first step was to search the Internet for the pump specifications, which turned out to be easier than I expected. I found an identical model at www.dcbrushlesspump.com, where I found an interesting list of specifications. The pump is rated at 12 volts dc, and will run as low as 4.5 volts, which is great as it means I can power it off the same source as the Pi.

I had a harder time searching for batteries to test the pump. I eventually found some that I’ve probably had since 2011. I didn’t really expect them to work, but the pump worked! I was surprised at the power and flow rate of the pump, especially at its lowest rated voltage and using ancient batteries.

While the pump was on, I had a bit of fun with some food dyes and dishwashing liquid, which can be seen in the video below. Don’t worry; I let it run in clean water afterwards to get the gunk out! :-)

More information on the pump - www.dcbrushlesspump.com/Brushless-DC-Pump-(DC30)-p25.html

For my own reference: Brown wire is positive, blue is negative

#pump #watercooling #raspberrypi #materials #video