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There is a switch in the room which the customer can set to "Please clean", "Clear", or "Do not disturb".
Any time the switch is moved to "Please clean" or "Do not disturb", the corresponding LED is lit and the corresponding button on the remote control should be activated. There will be duplicate LEDs on both sides of the door, so that both the customer and the cleaners can see them.
Any time the switch is moved to "Clear", any lit LEDs must be turned off and another button on the remote control will be activated.
I would recommend holding off anymore effort until we hear something from OP. This could turn into a talking to ourselves sorta thing![]()
Mikebits,
Just seen your last post,
Did Adrian want indication for the "OFF" ... ?
I dont recall that, he may have mentioned it as a possibility, i could look back i suppose.
Cheers, John
last but one now
Hi Adrian,
Hope your LCD is alright now.
Could you accept the off as being neither "clean" nor "don't disturb" ... ?
Unless you want it as some sort of 'double-check' ?
I'm afraid i am having trouble following the rest of your post.
Using a single switch,
is effectively "interlocked",
because it can only be in one position at a time.
Cheers, John![]()
Now I do violate your single switch rule but before you dismiss this idea read on. This configuration would have two switches, one would be dual DPDT with OFF and two momentary contacts. Like
Momentary - OFF - Momentary
Second switch would be a pushbutton used to clear alarm. Also this circuit uses no expensive relays and consist of 10 parts.
So 1 switch set alarm and notifies remote and lites LED, other switch clears LED and notifies remote.
One question, what will the remote be doing? will it notify a computer or something?
Circuit attached
Is the switch 1 used to reset all the alarm status to "OFF"?
Yes
Is your idea like the following?
Toggle the "momentary-off-momentary" button to set either "clean" or "do not disturb " to alarm status. If I want to reset the alarm status to "OFF", press the reset button, isn't it?
Yes that is my thinking.
the remote is used to notify a receiver, the remote and the receiver is a set of security device.
How will the receiver know which remote is activated? Is there some sort of ID sent with each remote?
Thank You.
How will the receiver know which remote is activated? Is there some sort of ID sent with each remote?
QUOTE]
er............i don't know actually.......
i think the signal frequency to be sent is different for differnet button.
How will the receiver know which remote is activated? Is there some sort of ID sent with each remote?
er............i don't know actually.......
i think the signal frequency to be sent is different for differnet button.
Hi Adrian!
I have some more questions. Some of these questions aren't about the actual circuit, but they may help us help you better if the answers mean that we can look at other possible solutions.
Is this actually for a large-scale installation in a real hotel? If so, how many rooms must be serviced, and what is the expected range?
Actually, it is only for prototype purpose. But in my opinion, it should be as small as possible.I don't know how many room is going to be serviced since i was ordered to design such a circuit. What do you mean about the range? The room size or the remote device size?
Is using the remote controls your idea, or the hotel manager/owner's? I ask only because it sounds like they already have something central installed.
It is not my idea. Actually, this kind of function should not be wireless due to ot reliable. I think they should have missed to install such kind of service.
Do you know for sure that you can get enough remote controls with unique codes/addresses/frequencies/whatever to handle all the rooms?
This is a really good question and one of my problem too. But i think they can find different frequency remote controls. The range of the remote control should not too large but sufficient to cover a standard size room so the can use the same frequency remote controls in another room far apart.
Why do you want to do this with relays and capacitors only? If semiconductors and ICs were allowed it could possibly be made smaller and cheaper.
Not only relays capacitors can be used, any components can archieve this functions are also acceptable.
What is your expected budget for each unit? What about the budget for the whole system?
Budget is not a problem now but cheaper should be better
What is your deadline?
As soon as possible. But i don't want to bother all of you frequently... Anyway, It is my pleasure to have your help when you have free time
What electronics experience do you have? Do you have the ability to load HEX code onto a microcontroller such as an 8051 or a PIC or something?
I haven't learn about how to use a microcontroller.
Would it be possible to use a rotary switch instead of a toggle?
er....If rotary switch is much more easy to build such device and user familiar. It should be acceptable.
I am sure I've forgotten some questions but if you can answer the above it might help us to help you.
Torben
Adrian116 said:Torben said:Hi Adrian!
I have some more questions. Some of these questions aren't about the actual circuit, but they may help us help you better if the answers mean that we can look at other possible solutions.
Is this actually for a large-scale installation in a real hotel? If so, how many rooms must be serviced, and what is the expected range?
Actually, it is only for prototype purpose. But in my opinion, it should be as small as possible.I don't know how many room is going to be serviced since i was ordered to design such a circuit. What do you mean about the range? The room size or the remote device size?
Is using the remote controls your idea, or the hotel manager/owner's? I ask only because it sounds like they already have something central installed.
It is not my idea. Actually, this kind of function should not be wireless due to ot reliable. I think they should have missed to install such kind of service.
Do you know for sure that you can get enough remote controls with unique codes/addresses/frequencies/whatever to handle all the rooms?
This is a really good question and one of my problem too. But i think they can find different frequency remote controls. The range of the remote control should not too large but sufficient to cover a standard size room so the can use the same frequency remote controls in another room far apart.
Why do you want to do this with relays and capacitors only? If semiconductors and ICs were allowed it could possibly be made smaller and cheaper.
Not only relays capacitors can be used, any components can archieve this functions are also acceptable.
What is your expected budget for each unit? What about the budget for the whole system?
Budget is not a problem now but cheaper should be better
What is your deadline?
As soon as possible. But i don't want to bother all of you frequently... Anyway, It is my pleasure to have your help when you have free time
What electronics experience do you have? Do you have the ability to load HEX code onto a microcontroller such as an 8051 or a PIC or something?
I haven't learn about how to use a microcontroller.
Would it be possible to use a rotary switch instead of a toggle?
er....If rotary switch is much more easy to build such device and user familiar. It should be acceptable.
Brain fog is clearing. It was a rotary knob switch, with a center PB...