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cpu
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A fail-safe water flow monitoring module designed to protect CNC spindles and laser cutter tubes. It reads impulses from a ZJ-S401 water flow sensor, displays the real-time flow rate on an I2C OLED display, and triggers an active-low alarm to the CNC controller if the flow drops below a user-defined threshold.
![Flow Controller Schema](images/schema.png)
![Flow Controller Schema](images/Flow_Controller.svg)
![Front](images/Flow_Controller_front.png)
![Back](images/Flow_Controller_back.png)
![ZJ-S401](images/Sensor_ZJ-S401.png)
Designed in **KiCad v9**.
## Features