I am using these pumps for a work project along with a Raspberry Pi and a relay board. When I connect a working pump to a relay connected to the RPI, everything runs fine. But when I plug in any of the other pumps, the RPI behaves strangely and sometimes restarts like it's shorting out or drawing too much current. has good stable traction, bad pumps bounce all over the place. The only working pump works very well, powerful and quiet.
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