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When I press the button I want all of the blinds to raise/lower at the same speed.
Not even my ikea ones that are all the same size / model rise exactly the same as the start signal from Zigbee sometimes gets to one before another. They go up at around the same rate but start a little off from each other.
Thanks for the feedback, I didnt realise this was unrealistic.
I think it is realistic but to achieve that you'd need to spend a ton of extra money for a out of the box commercial solution. I have the ikea shades as well and it doesn't really bother me too much if they raise at different rates. I set them to open to a specific percentage so they all wind up in the same spot anyways.
I agree, there are some blinds that use different protocols, use different motors etc that should be able to do this but probably at x2-x3 the cost or more.
If having them all raise/lower the same is unrealistic, maybe you could make a script that starts each one moving with a delay to create a staggered effect? It would still look visually pleasant IMO without the difficulty of syncing up different motors.