A custom industrial 2-layer PCB designed around the STM32G0F6Px microcontroller, featuring an integrated 24V-to-3.3V step-down buck converter, low-side MOSFET drivers, and hardware-conditioned sensor inputs for automated RO system management. System Functions & Peripherals Input Voltage: 24V DC main power supply (stepped down to 3.3V for logic). Actuator Control (Low-Side MOSFET Drivers): Inlet Solenoid: Controls feedwater inflow to the RO membrane. Flush Solenoid: Handles periodic high-pressure membrane flushing. Booster Pump: Drives high-pressure water delivery through the filter stages. Sensor Inputs (Filtered & Conditioned): High-Pressure Switch: Detects full tank pressure to shut down pumping. Low-Pressure Switch: Detects water feed loss to prevent pump dry-running. TDS Sensor: Measures Total Dissolved Solids / water purity output.