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mcqn / nfc-st25r3916

An RFID/NFC reader using the ST Microelectronics ST25R3916 chip
CERN Open Hardware Licence Version 2 - Strongly Reciprocal
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Add footprint for an RJ-45 connector #2

Closed amcewen closed 5 months ago

amcewen commented 7 months ago

It would be handy for future alternate uses where the reader is a distance away from the microcontroller, and so we can use an Ethernet cable to provide an easy connection option, to have an RJ45 connector on the underside, providing the same 8 connections as the 0.1" header.

I don't have any requirements driving the pin-out for that, so I think whatever is easiest to route.

(Spinning this out as a separate issue as it's lower priority than the initial design in #1)

amcewen commented 6 months ago

Having a look at what Kicad has in its library by default, and checking to see if they're available at Farnell (as a proxy for "can these be easily bought"), I'd say we should go with either RJ45_Plug_Metz_AJP92A8813 (vertical) or RJ45_Amphenol_RJHSE5380 (horizontal).

I don't have strong opinions on whether vertical or horizontal is best, so it's probably more a case of whichever fits more easily into the design. Horizontal maybe edges things in which is more flexible?

They're both relatively large though, printing them out for a look. So I think not worrying about it and having a separate 8-way 0.1" to RJ-45 adapter PCB is also a valid solution.

amcewen commented 5 months ago

We'll have a separate adapter board if we need an RJ-45 socket.