Thanks for all the help! I've bought a dimmer module: https://www.ebay.co.uk/itm/130774631315 And I'll take it apart to see if I can remove the potentiometer/switch from it. It seems the issue is about feel/function. Can you say more about what want? I now know after some research that the UK has so...

Thanks for the great answers folks.. it looks like I'm in over my head trying to get this to work the way I want! Imho Probably a lot less hassle to get a hot glue gun or a pot of epoxy resin and bodge a drilled face plate with a rotary encoder together for use or perhaps look at a 3d printed soluti...

Thanks for the replies, and apologies for the confusion, I did indeed mean a standard UK dimmer switch module with push on/off. Some thing like this: https://www.amazon.co.uk/Varilight-Standard-Dimmer-Classic-Plastic/dp/B01N1806WY What are you trying to do with it? I am working on a smart light swit...

How would I go about reading the values from the UK-type dimmer switch module like this? https://www.amazon.co.uk/Varilight-2-Way-Switch-Module-Dimmer/dp/B01DY2XE5I I'm hoping to use as a rotary encoder for the RPI (and also on/off switch). I've tried some other rotary encoders and potentiometers, b...