Lay Z Spa - 4 Wire Connection Query

[tricey27]

Hi All,

im just building up my PCB now and are a little unsure which holes on the PCB I solder my 4 wire version to. Can anyone advise please? Cheers

[visualapproach]

I tried to describe that in the manual. Can you be more specific about your thoughts?

[tricey27]

The loom within the hot tub is all white cables. I have installed the resistors and capacitors so I guess I use H1B and H2B. I’m just unsure of the 6 holes which four I would use and which pin on the harness is which? Thanks

[visualapproach]

You should use the marked holes. They are 'filled' squares on the pcb. The order is up to you to find out. It's the glory of DIY 😃
Find out which wire is 5V and GND and then you only have 4 combinations. And you don't even have to guess. You can run the layzspa.local/inputs/ to see which wire is dsp tx and the rest can be figured out.