How do I protect the Sonoff Touch T1 from simultaneous up/down signals for the screen motor?

I want to use this to control a screen motor for a projector (same as blinds). I need to PHYSICALLY secure it so that my up/down signal doesn't go at once. How do I do this?

I was thinking theoretically that it could work so that if the voltage goes 2x it just doesn't let go/burns up/disconnects something that will be behind the sonoff buttons and in front of the motor in the screen. Do you have any other better/cheaper ideas?

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Isn't it better to use something designed for this purpose instead of combining with erzacs?

But I want to poke around, I know why not - because it's for the light and not for the blinds, for the blinds he has one without buttons for 4 blinds, but unfortunately he doesn't have one for two and I'm not going to overpay What's the problem with making such a simple safety device?

ciubas wrote:

What's the problem with making such a simple safety feature?

If there isn't then why do you ask?

I'm asking because I don't know, if I did I wouldn't be asking - hence the post here. Why do you ask questions that don't make sense instead of suggesting where to look for a solution?

You have the answer in my first post.
But if you want it combine .

No, there is no answer to my question, there is only your constant exaggeration, as always on the forum - no willingness to help, to think together only smarting - bravo for this forum

Sorry mate, but there can't be anything "all the time" in the first post.
A claimant attitude nothing more.
Give me what I want or I'll be offended.
I will not think for myself. That's what the electrode is for.
I bought something that doesn't fit very well and now you have to help me.

Or maybe it was worth asking first and then buying?
Maybe it is worth checking/learning how the screen works, how the limit switches are connected?
Not you I don't care.
Just the claims.

One thing I do know is that a smart home is always only as smart as its "creator".

And an intelligent answer is like its author.

I don't know anything about electronics and I don't know what such a thing is called that could help me, you I see have the pleasure of gaining posts for yourself with posts about nothing so let's keep having fun.

In my first post I included everything I need from giving me information - I just need a physical safety device and why I only ask this because:
- the motor locks itself at maximum and minimum position
- currently there is a louvre button down/zero/top (with status lock) in use and there can be voltage all the time and the motor is just on the edge and the screen doesn't spin.
- I made the purchase with full forethought just to play around and learn something new
- the screen works just as the service department wrote to me - that if I give up/down at the same time it can burn out the motor

It's you who doesn't care about my problem just imposing your way of thinking on me, take a ready-made, take a ready-made, don't think, be like me - that's how you live better and then pour out your frustrations on others, it's so cool, see instead of helping you in any way I'll show you.... and so you read this and read this and read this and despite the lack of answers, I start to get pleasure from wasting your time, bigger and bigger and bigger....

ciubas wrote:

the screen works as the service wrote me off - that if I give the up/down at once it can burn up the engine

So you need to stick with it. You have made the wrong purchase because you have no idea about it.
You should have drawn up a circuit for yourself first and only on this basis should you choose a screen control device.
So please don't air your grievances just because I have a different point of view.
Now imagine that you have a relay with a 230V coil that has two pairs of NO-NC contacts.

Take a piece of paper, a pencil and at least try to solve the problem you created yourself.
I guarantee you more pleasure if you can manage it than from the dubious satisfaction you now supposedly feel from supposedly wasting my time.

I know I can make a state change relay - A turns on the power and B changes the up/down state and I can control that too, and I thought about that too, but it still doesn't answer my question, because I don't want to do it like that - I just need to find out if there is or what is the name of such a protection, what to make it out of, and just or as much as that.

I have no regrets, I bought it at such a price that I will sell it for 2x the price or fit it somewhere else, so why the regret?

Hello, kkas12 advises you well. To meaningfully combine some basics you need to have. I don't know, so I would read the manual first, maybe there is a possibility to set the switch as you need. If not, I would reprogram it so that it is possible. First off - tasmot. Plus a relay as above.

And now, after a few posts bordering on good manners, you write what you don't want and what you do want, even though you shouted the opposite in your first post?

ciubas wrote:

A turns on the power and B changes the up/down state

Get out of the drawer and look for other solutions.

Two possibilities:
- as a colleague already mentioned you reprogram Sonoff with Tasmota or other open-source software and configure/modify the program accordingly so that it is not possible to switch on both relays simultaneously
- you connect in the relay control signals and install an electronic circuit, which will prevent the driving of one relay when the other one is on and vice versa.

Loker wrote:

- you tap into the relay control signals and install an electronic circuit that will prevent one relay from driving when the other is on and vice versa.

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I write about this all the time, it's exactly what I want to do but I don't know what it's even called to read about it.

The first thing I can think of is H-bridge half-bridge drivers with protection against simultaneous conduction of MOSFETs - but that's a bit of form over substance.

ciubas wrote:

is there or what is the name of such a safety device, what to make it out of and just or as much.

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Relay with 230V coil and NC contact between Sonoff and motor. Say an upward movement you plug in via the NC contact of the relay and a downward movement in addition to powering the motor feeds the coil of the relay.