[Lost_BiomedE]

Wire or design? Studying signal analysis, and accompanying programs, can help with the design part. The wiring part comes with practice. Once it becomes really complicated or size is an issue, it is usually simulated and machine made.

[duncanj]

I meant design.

[Lost_BiomedE]

If you haven't studied signal analysis, I would recommend it. As a BME it was especially important to convert sensor analog signals to a desired digital signal for processing. It opens up a huge area that allows creation of black boxes that get the desired job done. It may be a little much if just for a hobby, but it is a great super power.