Week 9

23/11/2025

I started testing the water pump system. The first pump was connected to Relay Channel 3 (GPIO 27) using the same COM and NO switching method.

Although the pump worked correctly, it was too powerful for the aquarium size and drained water too quickly.


25/11/2025

The second pump, which has lower power and flow rate, was tested. This pump provided slower and more controlled water movement, making it more suitable for partial water changes. I decided to use this pump for the final system.



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Reference

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