with switch types, why would one want DPDT (Double Pole Double Throw) over a SPST (Single Pole Single Throw) switch in their setup? I thought the switch only served to cut power to the motherboard while maintaining pump, or run both...
I apologize for questions that may seem so trivial to people with a stronger Electronics background. It just is getting confusing to me what the point of having a relay at all is if you are not going to have a switch as well. I mean, Phaestus put together in his article a diagragm and scenario of relay use without a switch but I saw zero advantage of this scenario to just wiring the pump into the power supply feed directly.
Additionally, he drew a molex connector in his diagragm goign from the relay to the power supply, why would you do that instead of just wiring the PSU feeds directly into the relay/switch? Ack...
mr bean
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