💧 Gikfun Micro Submersible Mini Water Pump - Pack of 4pcs, DC 3V 5V, EK1893 Review

These small pumps pump a lot of water and are quiet when you first connect them. I bought these for use in 3D printed indoor fountains. My first fountain was like this. After 35 hours of printing, it took 10 minutes to assemble. The bowl was covered with clear spray paint and the hole for the cord was sealed with silicone. It dried out for 24 hours, was filled with water and connected to the mains. Day 1: Cool! The pump was quiet and powerful. Day 2: Pump got louder. Day 3: Even LOUDDER! Day 4:

I bought this set of 4 mini submersible water pumps for my husband who is always building and doing projects. My package arrived in 2 days. 2 pumps worked, 2 others didn't. For the price I paid I'm not upset that 2 didn't work. Things happen. I contacted the seller and they quickly called me back. Let me know they sent me another pack of 4 pumps. The 2 pumps that work work great as they should. I have no complaints. I would recommend them to everyone. I would definitely buy again!

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.

For a small automation or school project, this is a great solution. Size charts and specifications are shown in the images or in the product description to give you a clear idea of whether they are useful for the intended use. I used mine to automate the watering of some potted plants with an Arduino. As noted in another review, the wires are very thin and depending on usage it is better to solder thicker ones (picture). Also, there is a gap between the wires and the case in the upper part, so…