5i25 + 2 X 7i74

terkaa wrote:

O] I still have one question how are these cards numbered in hal? Does card number ie. hm2_5i25.0.7i84.2 correspond to channel number on 7i74?

Yes, it does.

There is an option for hosmot2:

loadrt hostmot2 use_serial_numbers=1

That changes the pin names so that you get pins like "hm2_7i84.004F..." where the 004F is the last 4 digits of the card serial number on the sticker.

The means that the order in which you plug in the cables doesn't matter. It's an option that I use myself, but it doesn't help with the "sserial_port_1=302xx" thing, that still depends on the socket that the device is plugged in to.

I ought to add the option to say "sserial_004F=3" too. (it can't be a HAL parameter, by the time HAL has started it is too late to change the board mode)

terkaa wrote:

So two 7i69 + BOB's might not fit.

For future reference, the M20 connectors are handy for this:
uk.rs-online.com/web/p/pcb-connector-housings/6812871/
The picture is the 2x2 but they go up to 10x2 and you can fit them side-by-side in the headers.
You need a little crimping tool, and the crimps are bought separately, but they make a neat solution for individual wires to box-headers.

I found a picture of the M20 connector on the 7i73 inside my lathe apron