I'm designing a low-speed network system with very small nodes, typically 1x1", that will (often) be encapsulated in potting boxes.
My problem is that I can't decide on a suitable connector to specify.
Relevant features are
- The physical layer of the network is RS-485 plus GND and power, thus four wires.
- Each node must have two connectors for easy daisy chaining.
- The connector must be readily available, no weird-arsed mil-spec job that nobody can buy.
An obvious choice is RJ45 being an industry standard and all, but they are so large they actually don't fit the preferred 1x1" form factor (although I am prepared to change this). Also these would be difficult to bring out of a potted enclosure although vertical jacks would work OK.
Another option is a 4-way 3.5mm audio plug but I'm not convinced they are all that common and would be worried about reliability and messy soldering of wires.
And then there's 4-way headers, not really a good look and once again maybe not that reliable as they are easily pulled out.
Any ideas out there?