Post Closed as "too broad" by Chris Stratton, RoyC, Voltage Spike, Sparky256, PeterJ
3 Clarification
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I will need to connect several PCBs within a single enclosure for the project I am working on (They are split to reduce cost should there be a manufacturing error).

I need to connect an I2C Bus, 5V , an analogue and 3 digital signals (and importantly, the ground plane) from each 'slave' board to the master.

Is there a universal connector that would be appropriate for all of these signals? I am also under the impression that I want as 'wide' a connection for the ground planes as possible (Multiple connection points?) to reduce RF emissions?

to clarify: all of the digital signals are 5V logic, either from a PSOC, arduino or a CMOS chip. The analogue signal is 0-5V. Signal integrity of the analogue line is a priority as I cannot connect the external reference signal to the line due to pin restrictions and am relying on an internal reference.

The PCBs are 35mm Wide (Though I will take them down to an inch if I can manage), will be placed basically touching each other, and arranged like this:

. _____________________
|######MASTER#### |
|____________________
| # S # |# S # | # S # |
| # L # |# L # | # L # |
| # A # |# A # | # A # |
| # V # |# V # | # V # |
| # E # |# E # | # E # |
| # # # |# # # | # # # |
|______|______|______|

Sorry for the bad ascii art, I made bad paint art but couldnt attach it.

I will need to connect several PCBs within a single enclosure for the project I am working on (They are split to reduce cost should there be a manufacturing error).

I need to connect an I2C Bus, 5V , an analogue and 3 digital signals (and importantly, the ground plane) from each 'slave' board to the master.

Is there a universal connector that would be appropriate for all of these signals? I am also under the impression that I want as 'wide' a connection for the ground planes as possible (Multiple connection points?) to reduce RF emissions?

to clarify: all of the digital signals are 5V logic, either from a PSOC, arduino or a CMOS chip. The analogue signal is 0-5V. Signal integrity of the analogue line is a priority as I cannot connect the external reference signal to the line due to pin restrictions and am relying on an internal reference.

I will need to connect several PCBs within a single enclosure for the project I am working on (They are split to reduce cost should there be a manufacturing error).

I need to connect an I2C Bus, 5V , an analogue and 3 digital signals (and importantly, the ground plane) from each 'slave' board to the master.

Is there a universal connector that would be appropriate for all of these signals? I am also under the impression that I want as 'wide' a connection for the ground planes as possible (Multiple connection points?) to reduce RF emissions?

to clarify: all of the digital signals are 5V logic, either from a PSOC, arduino or a CMOS chip. The analogue signal is 0-5V. Signal integrity of the analogue line is a priority as I cannot connect the external reference signal to the line due to pin restrictions and am relying on an internal reference.

The PCBs are 35mm Wide (Though I will take them down to an inch if I can manage), will be placed basically touching each other, and arranged like this:

. _____________________
|######MASTER#### |
|____________________
| # S # |# S # | # S # |
| # L # |# L # | # L # |
| # A # |# A # | # A # |
| # V # |# V # | # V # |
| # E # |# E # | # E # |
| # # # |# # # | # # # |
|______|______|______|

Sorry for the bad ascii art, I made bad paint art but couldnt attach it.

2 added 136 characters in body
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I will need to connect several PCBs within a single enclosure for the project I am working on (They are split to reduce cost should there be a manufacturing error).

I need to connect an I2C Bus, 5V , an analogue and 3 digital signals (and importantly, the ground plane) from each 'slave' board to the master.

Is there a universal connector that would be appropriate for all of these signals? I am also under the impression that I want as 'wide' a connection for the ground planes as possible (Multiple connection points?) to reduce RF emissions?

to clarify: all of the digital signals are 5V logic, either from a PSOC, arduino or a CMOS chip. The analogue signal is 0-5V. Signal integrity of the analogue line is a priority as I cannot connect the external reference signal to the line due to pin restrictions and am relying on an internal reference.

I will need to connect several PCBs within a single enclosure for the project I am working on (They are split to reduce cost should there be a manufacturing error).

I need to connect an I2C Bus, 5V , an analogue and 3 digital signals (and importantly, the ground plane) from each 'slave' board to the master.

Is there a universal connector that would be appropriate for all of these signals? I am also under the impression that I want as 'wide' a connection for the ground planes as possible (Multiple connection points?) to reduce RF emissions?

I will need to connect several PCBs within a single enclosure for the project I am working on (They are split to reduce cost should there be a manufacturing error).

I need to connect an I2C Bus, 5V , an analogue and 3 digital signals (and importantly, the ground plane) from each 'slave' board to the master.

Is there a universal connector that would be appropriate for all of these signals? I am also under the impression that I want as 'wide' a connection for the ground planes as possible (Multiple connection points?) to reduce RF emissions?

to clarify: all of the digital signals are 5V logic, either from a PSOC, arduino or a CMOS chip. The analogue signal is 0-5V. Signal integrity of the analogue line is a priority as I cannot connect the external reference signal to the line due to pin restrictions and am relying on an internal reference.

1
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How should I connect my PCBs?

I will need to connect several PCBs within a single enclosure for the project I am working on (They are split to reduce cost should there be a manufacturing error).

I need to connect an I2C Bus, 5V , an analogue and 3 digital signals (and importantly, the ground plane) from each 'slave' board to the master.

Is there a universal connector that would be appropriate for all of these signals? I am also under the impression that I want as 'wide' a connection for the ground planes as possible (Multiple connection points?) to reduce RF emissions?