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Minimal wiring relay contacts.
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ornea:
I often use relay shields or completed boards that may be populated with relays.
They typically break out the NO, NC & COM via a 3 pin screw terminal.
Often I simply want to switch the same supply (12VDC) that is feeding the board. To wire this via screw terminal gets messy and I always find I need somewhere to connect the common ground.
I have taken to soldering bodge wires as shown in the diagram attached which appears to an elegant solution. But curious if it is bad. I can see it is bad for some unsuspecting person who comes after me but if its just me I think it fine.
The bodge wires provide, Normally ON(2-3), Normally OFF (2-1) and Always ON (1-3) terminals. It is clean, tidy and allows me to easily install the boards and connect the relay driven loads.
I am about to incorporate this in my own PCB design with clearly labelled pinouts.
I think it is a good solution but feel there is something I am missing as to why this is bad.
ataradov:
If NO, NC and COM labels are nowhere close to the connector, then I think you are fine. Anyone who has hooked up a lot of relay units like this will be looking for those labels, and not having them will give enough of a pause.
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