Ashley Gittins

Howdy - wow hadn't realised it had been 3 years since I did that initial probing about! I haven't got further since then, however I have been donated a faulty...

Whoo! Good news - I dug out the dead in.touch-2 unit that was donated to me and I think I have a pretty confident answer on pinout and protocol! ...

Quick and dirty pics of how I made a connector using the empty port covers and a 2x4F pcb header connector.   ![PXL_20240928_063954357...

@rct > @agittins - A possibly tangential thought if you want to do some hacking from the comfort of your desk. The [microchip RF board mrf89xam9a is SPI](https://www.microchip.com/en-us/product/mrf89xam9a). Might be...

Gah! Oh no... after taking a **proper** look at the labels on my unit, it turns out I have.... an in.XM1 😱 [As far as I know](https://www.spaparts.com.au/gecko-aeware-in.touch2-wifi-smartphone-spa-control) these are *not*...

Oh, and just noticed in the techbook for both XM1 and XM2 that the 5v rails seem to be split, one rail for C1/CO and one rail for C2/IO, and...

@rwskinner my gut instinct would be that the spa pack might be master, and it would scan the bus(es) at boot to init/discover any peripherals it supports. But you could...

It looks like it's wired directly to the buttons on the control pad (or via relays) given that the outputs seem to be mapped to physical pins rather than some...

@eigenphase could you attach the result of a "download diagnostics"? I know others have had some issues with bluecharms having long intervals between advertisements, but that would normally cause "unknown"...

Thanks for your suggestion, and the linkage to Area-Occupancy-Detection, which looks very cool! I've been thinking about how to handle occupancy for a while, and I think the way I'd...