The SubWelton board avoids duplication
The SubWelton board avoids duplication of pins and so has only two plug connectors rather than four. It is still an IoExpander board with 32 channels of inputs and outputs, along with interrupt capability. This configuration is not compatible with my current range of peripherals, but it allow the user to develop projects with less cables.
This SubWelton Board is available for $7NZD plus postage, as shown directly below.
