Hi Monkey3 - a fellow shower automation investigator here

I've been looking into the Mira platinum as well as this Vado. Would be really interested in asking some questions of you:
- are you just using this controller in the shower? elsewhere I saw you post about wanting to use it to control something else. Would like to hear about your project
- Are you using the Vado with the controller (i.e. the mixer valve system)? Can you give me an idea about how much the whole kit cost?
I liked the idea of making my own shower mixer using calibrated "proportional solenoid valves" (i.e. valves that take e.g. 0-10v and adjust the flow of water accordingly). So at first I thought I would try to get a nice waterproof user interface for the shower. That seems like the hard bit. The rest seems like a simple combination of finding the valves and controlling them with an Arduino - easy stuff.
Check out
this product from RJS Electronics. It's basically a rotary encoder with a display built in. I'm thinking of getting one to test it out, and write a little arduino sketch to power it.
Also there's another UK guy who appears to have made a
really nice looking DIY Nest knockoff, which would look nice in a shower. His post doesn't go into much detail about the housing (which to my mind is the most interesting bit) so I have emailed him tonight to ask for more info.
Anyway, can you let me know how much you paid for the Mira, and the Vado, and also whether you liked the look and feel of the interfaces? And also how are you getting on with the Vado? Do you have it working? What exactly drove you to wanting to communicate with the controller? Simply to control the shower from your own automation hub? (That's basically what I want to do. I use Node-RED by the way.)
Cheers, Mat