eptheca

Hi,

SR's are Shift Registers, the chips on the DINx4 module

J1 on the DINx4 has a 10 pin (2x5) connector

I thought the two rows where the same, but the middle pin is not.

So the 5 pin cable from CORE J9 needs to be connected to the 5 pins on the DINx4 closest to the edge of the PCB, NOT the row closest to the chips

Good luck to you too

Hal