Control of solenoid valves and RGB lighting in the fountain with 9 jets

The discussion focuses on controlling solenoid valves for a fountain with 9 jets and integrating RGB lighting at each nozzle within a budget of approximately 4000 zł. The solenoid valves are intended to regulate water flow through 16mm PE pipes feeding 3/4" threaded foaming nozzles operating at 0.6 bar and 61 l/min. Key considerations include valve coil parameters, voltage (230 VAC power supply available in a technical well), and pipe sizing concerns for adequate flow. Control solutions proposed include timing relays, but more advanced and flexible options such as PLCs (Programmable Logic Controllers) with transistor outputs are recommended for programmable sequences and real-time control. Semiconductor relays (SSRs) are suggested as reliable power stages for switching 230 VAC loads without contact sparking, enhancing durability. For RGB lighting, lamps with built-in DMX controllers are preferred despite higher cost (~40-50 PLN more) due to reduced wiring complexity and expanded control capabilities, including potential integration with valve and pump inverter control. The FATEK 24 MA PLC is cited as an example of a cost-effective controller (~600-800 PLN net) with sufficient outputs for the application.
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