adding secondary sub-board to pin-out header

Question

Possibly a very basic question, but I am trying to add a secondary sub-board (receiver) to a micro controller for roller shutter door.

The control board already has a right angle 6-way pinout with 2.54mm pitch. This connects directly into the existing sub-board (receiver).

What I would like to do is to somehow passthrough the pinout to another receiver with the same pinout using simple wires.

The image below shows the current state with the purple existing board connected directly to the right angle pin-out from the control board. The new board is in blue, however they can be swapped around. The order doesn't matter.

My question is: how can I connect a secondary board (shown in blue) to the existing pins? I can't access the pins directly as there are plugged in. I'm guessing I would need some kind of pass-through device or splitter.

EDIT: Would the below configuration work on a stripboard?

Answer 1

The simpliest way would be soldering wires on each pin. Use only single strand (monolithic) wires. You can make use of prototype board, cut to desired size, to solder a female connector and a male connector in the appropriate direction to connect the original boards and then add the wires to the secondary sub-board. It will look more solid. But maybe not necessary.

Note that there is no garantee that the secondary sub-board will be recognized by the system or will work properly. But that already another topic.

Answer 2

Yes your suggested man in the middle board would work, physically. As your diagram shows, you just need a 0.1" /2.54mm female header with extended leads (aka a stacking header) for the first board and some regular male headers for the top.

Without knowing what the boards actually are we cant say that the stacking would work though. Power would, but we cant say for sure for the oscillator pin or what the other 3 pins do at all.